 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
ron.mcgann(at)baesystems.
Guest
|
 Posted: Tue Oct 23, 2007 3:03 pm Post subject: FPS Lessons Learnt |
 |
|
G'day all,
Checked the wiring of the Flap Positioning System again last night. As a professional Electrical Engineer, I confirmed that there was no wiring issue and was convinced the FPS controller was stuffed. So I removed it and disassembled it. Here is what I discovered:
1. the controller consists of 2 relays, 2 diodes and two fusible links. Cost of the components is about $15. The $225 cost of the unit is extortionate.
2. One of the fusible links had opened.
3. A check of the switches on the switch bracket indicated that the retract switch was not properly engaged by the positioning rod (ie the switch was not closed)
So, when the flaps were originally activated, extend worked fine. Because the retract switch was not properly engaged (probably intermittent), the flaps would not retract. If the flaps will not retract using the FPS, the only way to retract them is to apply reverse voltage directly to the flap motor. But if the FPS is connected, this will send power the wrong way through the control box and cause one of the fusible links to open.
In summary, there was no initial problem with the controller. The problem was misaligned switches on the switch bracket. Manually retracting the flaps while the FPS was connected cooked the controller and rendered retract permanently u/s.
So here are the lessons:
1. The electronics in the FPS are trivial. If you have an FPS problem it will be very unlikely to be a fault in the controller.
2. If the flaps fail to extend or retract, confirm that the microswitches are being properly opened/closed by the positioning rod along its travel.
3. use a molex or equivalent connector at the flap motor/actuator connector so that the flap can be extended/retracted manually with the controller installed (but disconnected).
I can't see any really compelling reaon for the fusible links, so replaced them with #28 wire - be buggered if I was going to spend another US$225 on a repalcement unit. Checked the switch alignment and bench tested out ok. Will reinstall the electronics in a new case and remount in the tunnel tomorrow night.
Hope this helps for those yet to install.
Ron
-187 finishing (probably forever!!!) [quote]"Warning:
The information contained in this email and any attached files is
confidential to BAE Systems Australia. If you are not the intended
recipient, any use, disclosure or copying of this email or any
attachments is expressly prohibited. If you have received this email
in error, please notify us immediately. VIRUS: Every care has been
taken to ensure this email and its attachments are virus free,
however, any loss or damage incurred in using this email is not the
sender's responsibility. It is your responsibility to ensure virus
checks are completed before installing any data sent in this email to
your computer."
[b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
| Back to top |
|
 |
AV8ORJWC
Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"
|
| Posted: Tue Oct 23, 2007 5:22 pm Post subject: FPS Lessons Learnt |
|
|
Ron, that does indeed help but would be even better if you would recommend components that us Amateur Radio types should kludge together to make a superior product. Would gladly send you money to offset the professional report.
John Cox
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGANN, Ron
Sent: Tuesday, October 23, 2007 4:02 PM
To: rv10-list(at)matronics.com
Subject: FPS Lessons Learnt
G'day all,
Checked the wiring of the Flap Positioning System again last night. As a professional Electrical Engineer, I confirmed that there was no wiring issue and was convinced the FPS controller was stuffed. So I removed it and disassembled it. Here is what I discovered:
1. the controller consists of 2 relays, 2 diodes and two fusible links. Cost of the components is about $15. The $225 cost of the unit is extortionate.
2. One of the fusible links had opened.
3. � A check of the switches on the switch bracket indicated that the retract switch was not properly engaged by the positioning rod (ie the switch was not closed)
So, when the flaps were originally activated, extend worked fine. Because the retract switch was not properly engaged (probably intermittent), the flaps would not retract. If the flaps will not retract using the FPS, the only way to retract them is to apply reverse voltage directly to the flap motor. But if the FPS is connected, this will send power the wrong way through the control box and cause one of the fusible links to open.
In summary, there was no initial problem with the controller. The problem was misaligned switches on the switch bracket. Manually retracting the flaps while the FPS was connected cooked the controller and rendered retract permanently u/s.
So here are the lessons:
1. The electronics in the FPS are trivial. If you have an FPS problem it will be very unlikely to be a fault in the controller.
2. If the flaps fail to extend or retract, confirm that the microswitches are being properly opened/closed by the positioning rod along its travel.
3. use a molex or equivalent connector at the flap motor/actuator connector so that the flap can be extended/retracted manually with the controller installed (but disconnected).
I can't see any really compelling reaon for the fusible links, so replaced them with #28 wire - be buggered if I was going to spend another US$225 on a repalcement unit. Checked the switch alignment and bench tested out ok. Will reinstall the electronics in a new case and remount in the tunnel tomorrow night.
Hope this helps for those yet to install.
Ron
-187 finishing (probably forever!!!) [quote]"Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited. If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility. It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toyour computer." [b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
| Back to top |
|
|
dlm46007(at)cox.net
Guest
|
| Posted: Tue Oct 23, 2007 5:56 pm Post subject: FPS Lessons Learnt |
|
|
He makes me glad I returned mine for credit.
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of John W. Cox
Sent: Tuesday, October 23, 2007 6:21 PM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
Ron, that does indeed help but would be even better if you would recommend components that us Amateur Radio types should kludge together to make a superior product. Would gladly send you money to offset the professional report.
John Cox
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGANN, Ron
Sent: Tuesday, October 23, 2007 4:02 PM
To: rv10-list(at)matronics.com
Subject: FPS Lessons Learnt
G'day all,
Checked the wiring of the Flap Positioning System again last night. As a professional Electrical Engineer, I confirmed that there was no wiring issue and was convinced the FPS controller was stuffed. So I removed it and disassembled it. Here is what I discovered:
1. the controller consists of 2 relays, 2 diodes and two fusible links. Cost of the components is about $15. The $225 cost of the unit is extortionate.
2. One of the fusible links had opened.
3. � A check of the switches on the switch bracket indicated that the retract switch was not properly engaged by the positioning rod (ie the switch was not closed)
So, when the flaps were originally activated, extend worked fine. Because the retract switch was not properly engaged (probably intermittent), the flaps would not retract. If the flaps will not retract using the FPS, the only way to retract them is to apply reverse voltage directly to the flap motor. But if the FPS is connected, this will send power the wrong way through the control box and cause one of the fusible links to open.
In summary, there was no initial problem with the controller. The problem was misaligned switches on the switch bracket. Manually retracting the flaps while the FPS was connected cooked the controller and rendered retract permanently u/s.
So here are the lessons:
1. The electronics in the FPS are trivial. If you have an FPS problem it will be very unlikely to be a fault in the controller.
2. If the flaps fail to extend or retract, confirm that the microswitches are being properly opened/closed by the positioning rod along its travel.
3. use a molex or equivalent connector at the flap motor/actuator connector so that the flap can be extended/retracted manually with the controller installed (but disconnected).
I can't see any really compelling reaon for the fusible links, so replaced them with #28 wire - be buggered if I was going to spend another US$225 on a repalcement unit. Checked the switch alignment and bench tested out ok. Will reinstall the electronics in a new case and remount in the tunnel tomorrow night.
Hope this helps for those yet to install.
Ron
-187 finishing (probably forever!!!) | Quote: | | "Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited. If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility. It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toyour computer." http://www.matronics.com/Navigator?RV10-Listhttp://forums.matronics.com http://www.matronics.com/Navigator?RV10-List |
012345
[quote][b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
| Back to top |
|
|
ron.mcgann(at)baesystems.
Guest
|
| Posted: Tue Oct 23, 2007 6:03 pm Post subject: FPS Lessons Learnt |
|
|
Hi John,
The Showplanes FPS is an elegant, simple, effective design that I am sure has been used with great success in many RVs. I am peeved at the price and the quality of documentation that fails to warn of the not so obvious consequences of driving the flap motor while the FPS is installed.
The only technical issue I might have with their design is the need for the fusible links - I need to think about the REAL need a little more. The relay/switch logic is pretty trivial and once this has been worked out, the required circuit diagram and PCB are elementary. The convenience of the Showplanes system is the switch bracket and positioning rod assembly - so long as you confirm proper engagement of the switches <Like I did not do blast/bugger/$%$^&>, it is elegant and should work a treat.
I won't reproduce the circuit for the Showplanes FPS - they may have Intellectual Property in it - but it's not rocket science. If you weren't building an RV, and armed with a basic knowledge of switch logic, you could design (and probably even build) an FPS with two 12V DPDT relays, 2 (optional) diodes and 2 microswitches on a sunday arvo. The hard part is not the controller, but the position switching mechanism and I think the showplanes concept is excellent.
The Aircraft Extras FPS Plus NT (with Ray Allen position indicator in the cost) is almost the same price as the Showplanes unit, but is probably micoprocessor controlled to perform the automated functionality it offers. Go figure the Showplanes pricing logic.
cheers,
Ron
| Quote: | From: owner-rv10-list-server(at)matronics Ecom [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of John W. Cox
Sent: Wednesday, 24 October 2007 10:51 AM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
Ron, that does indeed help but would be even better if you would recommend components that us Amateur Radio types should kludge together to make a superior product.� Would gladly send you money to offset the professional report.
�
John Cox
�
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGANN, Ron
Sent: Tuesday, October 23, 2007 4:02 PM
To: rv10-list(at)matronics.com
Subject: FPS Lessons Learnt
G'day all,
Checked the wiring of the Flap Positioning System again last night. As a professional Electrical Engineer, I confirmed that there was no wiring issue and was convinced the FPS controller was stuffed. So I removed it and disassembled it. Here is what I discovered:
1. � the controller consists of 2 relays, 2 diodes and two fusible links.� Cost of the components is about $15. The $225 cost of the unit is extortionate.
2. � One of the fusible links had opened.
3. � A check of the switches on the switch bracket indicated that the retract switch was not properly engaged by the positioning rod (ie the switch was not closed)
So, when the flaps were originally activated, extend worked fine. Because the retract switch was not properly engaged (probably intermittent), the flaps would not retract. If the flaps will not retract using the FPS, the only way to retract them is to apply reverse voltage directly to the flap motor.� But if the FPS is connected, this will send power the wrong way through the control box and cause one of the fusible links to open.
In summary, there was no initial problem with the controller. The problem was misaligned switches on the switch bracket. Manually retracting the flaps while the FPS was connected cooked the controller and rendered retract permanently u/s.
So here are the lessons:
1. � The electronics in the FPS are trivial. If you have an FPS problem it will be very unlikely to be a fault in the controller.
2. � If the flaps fail to extend or retract, confirm that the microswitches are being properly opened/closed by the positioning rod along its travel.
3. � use a molex or equivalent connector at the flap motor/actuator connector so that the flap can be extended/retracted manually with the controller installed (but disconnected).
I can't see any really compelling reaon for the fusible links, so replaced them with #28 wire - be buggered if I was going to spend another US$225 on a repalcement unit.� Checked the switch alignment and bench tested out ok. Will reinstall the electronics in a new case and remount in the tunnel tomorrow night.
Hope this helps for those yet to install.
Ron
-187 finishing (probably forever!!!) | Quote: | | "Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited. If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility. It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toThe information contained in this email and any attached files is |
0 | Quote: | | The information contained in this email and any attached files is |
1 | Quote: | | The information contained in this email and any attached files is |
2 | Quote: | | The information contained in this email and any attached files is |
3 | Quote: | | The information contained in this email and any attached files is |
4 | Quote: | | The information contained in this email and any attached files is |
5 | Quote: | | The information contained in this email and any attached files is |
6 | Quote: | | The information contained in this email and any attached files is |
7 | Quote: | | The information contained in this email and any attached files is |
8 | Quote: | | The information contained in this email and any attached files is |
9 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
0 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
1 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
2 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
3 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
4 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
5 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
6
| Quote: | | confidential to BAE Systems Australia. If you are not the intended |
7 |
| Quote: | | confidential to BAE Systems Australia. If you are not the intended |
8 [quote][b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
| Back to top |
|
|
acs(at)acspropeller.com.a
Guest
|
| Posted: Tue Oct 23, 2007 7:20 pm Post subject: FPS Lessons Learnt |
|
|
Ron, in your opinion does this pose any potential safety issue with an inadvertent extension or retraction in flight?
John 40319
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGANN, Ron
Sent: Wednesday, 24 October 2007 12:03 PM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
Hi John,
The Showplanes FPS is an elegant, simple, effective design that I am sure has been used with great success in many RVs. I am peeved at the price and the quality of documentation that fails to warn of the not so obvious consequences of driving the flap motor while the FPS is installed.
The only technical issue I might have with their design is the need for the fusible links - I need to think about the REAL need a little more. The relay/switch logic is pretty trivial and once this has been worked out, the required circuit diagram and PCB are elementary. The convenience of the Showplanes system is the switch bracket and positioning rod assembly - so long as you confirm proper engagement of the switches <Like I did not do blast/bugger/$%$^&>, it is elegant and should work a treat.
I won't reproduce the circuit for the Showplanes FPS - they may have Intellectual Property in it - but it's not rocket science. If you weren't building an RV, and armed with a basic knowledge of switch logic, you could design (and probably even build) an FPS with two 12V DPDT relays, 2 (optional) diodes and 2 microswitches on a sunday arvo. The hard part is not the controller, but the position switching mechanism and I think the showplanes concept is excellent.
The Aircraft Extras FPS Plus NT (with Ray Allen position indicator in the cost) is almost the same price as the Showplanes unit, but is probably micoprocessor controlled to perform the automated functionality it offers. Go figure the Showplanes pricing logic.
cheers,
Ron
| Quote: |
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of John W. Cox
Sent: Wednesday, 24 October 2007 10:51 AM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
Ron, that does indeed help but would be even better if you would recommend components that us Amateur Radio types should kludge together to make a superior product. Would gladly send you money to offset the professional report.
John Cox
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGANN, Ron
Sent: Tuesday, October 23, 2007 4:02 PM
To: rv10-list(at)matronics.com
Subject: FPS Lessons Learnt
G'day all,
Checked the wiring of the Flap Positioning System again last night. As a professional Electrical Engineer, I confirmed that there was no wiring issue and was convinced the FPS controller was stuffed. So I removed it and disassembled it. Here is what I discovered:
1. the controller consists of 2 relays, 2 diodes and two fusible links. Cost of the components is about $15. The $225 cost of the unit is extortionate.
2. One of the fusible links had opened.
3. � A check of the switches on the switch bracket indicated that the retract switch was not properly engaged by the positioning rod (ie the switch was not closed)
So, when the flaps were originally activated, extend worked fine. Because the retract switch was not properly engaged (probably intermittent), the flaps would not retract. If the flaps will not retract using the FPS, the only way to retract them is to apply reverse voltage directly to the flap motor. But if the FPS is connected, this will send power the wrong way through the control box and cause one of the fusible links to open.
In summary, there was no initial problem with the controller. The problem was misaligned switches on the switch bracket. Manually retracting the flaps while the FPS was connected cooked the controller and rendered retract permanently u/s.
So here are the lessons:
1. The electronics in the FPS are trivial. If you have an FPS problem it will be very unlikely to be a fault in the controller.
2. If the flaps fail to extend or retract, confirm that the microswitches are being properly opened/closed by the positioning rod along its travel.
3. use a molex or equivalent connector at the flap motor/actuator connector so that the flap can be extended/retracted manually with the controller installed (but disconnected).
I can't see any really compelling reaon for the fusible links, so replaced them with #28 wire - be buggered if I was going to spend another US$225 on a repalcement unit. Checked the switch alignment and bench tested out ok. Will reinstall the electronics in a new case and remount in the tunnel tomorrow night.
Hope this helps for those yet to install.
Ron
-187 finishing (probably forever!!!) | Quote: | | "Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited. If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility. It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toyour computer." http://www.matronics.com/Navigator?RV10-Listhttp://forums.matronics.com p://www.matronics.com/Navigator?RV10-Listics.com |
|
| Quote: | | "Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or any |
01234567890123456789 | Quote: | | p://www.matronics.com/Navigator?RV10-List |
0 | Quote: | | p://www.matronics.com/Navigator?RV10-List |
1 | Quote: | | p://www.matronics.com/Navigator?RV10-List |
2
[quote][b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
| Back to top |
|
|
ron.mcgann(at)baesystems.
Guest
|
| Posted: Tue Oct 23, 2007 7:38 pm Post subject: FPS Lessons Learnt |
|
|
My opinion?- pretty unlikely. Power is only applied to extend or retract the flap via the flap switch. If a fault occurs, more likely the flap will either not extend further (requring a no flaps or reduced flaps landing), or not retract (maybe a go round with flaps extended).
| Quote: | From: owner-rv10-list-server(at)matronics Ecom [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of John Dunne
Sent: Wednesday, 24 October 2007 12:50 PM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
Ron, in your opinion does this pose any potential safety issue with an inadvertent extension or retraction in flight?
John 40319
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGANN, Ron
Sent: Wednesday, 24 October 2007 12:03 PM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
Hi John,
The Showplanes FPS is an elegant, simple, effective design that I am sure has been used with great success in many RVs. I am peeved at the price and the quality of documentation that fails to warn of the not so obvious consequences of driving the flap motor while the FPS is installed.
The only technical issue I might have with their design is the need for the fusible links - I need to think about the REAL need a little more. The relay/switch logic is pretty trivial and once this has been worked out, the required circuit diagram and PCB are elementary. The convenience of the Showplanes system is the switch bracket and positioning rod assembly - so long as you confirm proper engagement of the switches <Like I did not do blast/bugger/$%$^&>, it is elegant and should work a treat.
I won't reproduce the circuit for the Showplanes FPS - they may have Intellectual Property in it - but it's not rocket science.� If you weren't building an RV, and armed with a basic knowledge of switch logic, you could design (and probably even build) an FPS with two 12V DPDT relays, 2 (optional) diodes and 2 microswitches on a sunday arvo. The hard part is not the controller, but the position switching mechanism and I think the showplanes concept is excellent.
The Aircraft Extras FPS Plus NT (with Ray Allen position indicator in the cost) is almost the same price as the Showplanes unit, but is probably micoprocessor controlled to perform the automated functionality it offers. Go figure the Showplanes pricing logic.
cheers,
Ron
| Quote: |
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of John W. Cox
Sent: Wednesday, 24 October 2007 10:51 AM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
Ron, that does indeed help but would be even better if you would recommend components that us Amateur Radio types should kludge together to make a superior product. Would gladly send you money to offset the professional report.
John Cox
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGANN, Ron
Sent: Tuesday, October 23, 2007 4:02 PM
To: rv10-list(at)matronics.com
Subject: FPS Lessons Learnt
G'day all,
Checked the wiring of the Flap Positioning System again last night. As a professional Electrical Engineer, I confirmed that there was no wiring issue and was convinced the FPS controller was stuffed. So I removed it and disassembled it.� Here is what I discovered:
1. � the controller consists of 2 relays, 2 diodes and two fusible links.� Cost of the components is about $15. The $225 cost of the unit is extortionate.
2. � One of the fusible links had opened.
3. � A check of the switches on the switch bracket indicated that the retract switch was not properly engaged by the positioning rod (ie the switch was not closed)
So, when the flaps were originally activated, extend worked fine. Because the retract switch was not properly engaged (probably intermittent), the flaps would not retract. If the flaps will not retract using the FPS, the only way to retract them is to apply reverse voltage directly to the flap motor. But if the FPS is connected, this will send power the wrong way through the control box and cause one of the fusible links to open.
In summary, there was no initial problem with the controller. The problem was misaligned switches on the switch bracket. Manually retracting the flaps while the FPS was connected cooked the controller and rendered retract permanently u/s.
So here are the lessons:
1. � The electronics in the FPS are trivial. If you have an FPS problem it will be very unlikely to be a fault in the controller.
2. � If the flaps fail to extend or retract, confirm that the microswitches are being properly opened/closed by the positioning rod along its travel.
3. � use a molex or equivalent connector at the flap motor/actuator connector so that the flap can be extended/retracted manually with the controller installed (but disconnected).
I can't see any really compelling reaon for the fusible links, so replaced them with #28 wire - be buggered if I was going to spend another US$225 on a repalcement unit.� Checked the switch alignment and bench tested out ok. Will reinstall the electronics in a new case and remount in the tunnel tomorrow night.
Hope this helps for those yet to install.
Ron
-187 finishing (probably forever!!!) | Quote: | | "Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited. If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility. It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toThe information contained in this email and any attached files is |
0 | Quote: | | The information contained in this email and any attached files is |
1 | Quote: | | The information contained in this email and any attached files is |
2 | Quote: | | The information contained in this email and any attached files is |
3 | Quote: | | The information contained in this email and any attached files is |
4 | Quote: | | The information contained in this email and any attached files is |
5 | Quote: | | The information contained in this email and any attached files is |
6 | Quote: | | The information contained in this email and any attached files is |
7 | Quote: | | The information contained in this email and any attached files is |
8 | Quote: | | The information contained in this email and any attached files is |
9 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
0 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
1 |
| Quote: | | confidential to BAE Systems Australia. If you are not the intended |
2 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
3 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
4 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
5 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
6 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
7 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
8 | Quote: | | confidential to BAE Systems Australia. If you are not the intended |
9 | Quote: | | recipient, any use, disclosure or copying of this email or any |
0 | Quote: | | recipient, any use, disclosure or copying of this email or any |
1 | Quote: | | recipient, any use, disclosure or copying of this email or any |
2 | Quote: | | recipient, any use, disclosure or copying of this email or any |
3 | Quote: | | recipient, any use, disclosure or copying of this email or any |
4 | Quote: | | recipient, any use, disclosure or copying of this email or any |
5 | Quote: | | recipient, any use, disclosure or copying of this email or any |
6 | Quote: | | recipient, any use, disclosure or copying of this email or any |
7 | Quote: | | recipient, any use, disclosure or copying of this email or any |
8 | Quote: | | recipient, any use, disclosure or copying of this email or any |
9 | Quote: | | attachments is expressly prohibited. If you have received this email |
0 | Quote: | | attachments is expressly prohibited. If you have received this email |
1 | Quote: | | attachments is expressly prohibited. If you have received this email |
2 | Quote: | | attachments is expressly prohibited. If you have received this email |
3 | Quote: | | attachments is expressly prohibited. If you have received this email |
4 | Quote: | | attachments is expressly prohibited. If you have received this email |
5 | Quote: | | attachments is expressly prohibited. If you have received this email |
6 | Quote: | | attachments is expressly prohibited. If you have received this email |
7 | Quote: | | attachments is expressly prohibited. If you have received this email |
8
| Quote: | | attachments is expressly prohibited. If you have received this email |
9in error, please notify us immediately. VIRUS: Every care has been |
0 [quote][b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
| Back to top |
|
|
rvbuilder(at)sausen.net
Guest
|
| Posted: Thu Oct 25, 2007 7:11 am Post subject: FPS Lessons Learnt |
|
|
Makes me glad it seemed cheesy so I went with the Aircraft Extras FPS. J
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of David McNeill
Sent: Tuesday, October 23, 2007 8:56 PM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
He makes me glad I returned mine for credit.
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of John W. Cox
Sent: Tuesday, October 23, 2007 6:21 PM
To: rv10-list(at)matronics.com
Subject: RE: FPS Lessons Learnt
Ron, that does indeed help but would be even better if you would recommend components that us Amateur Radio types should kludge together to make a superior product. Would gladly send you money to offset the professional report.
John Cox
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of McGANN, Ron
Sent: Tuesday, October 23, 2007 4:02 PM
To: rv10-list(at)matronics.com
Subject: FPS Lessons Learnt
G'day all,
Checked the wiring of the Flap Positioning System again last night. As a professional Electrical Engineer, I confirmed that there was no wiring issue and was convinced the FPS controller was stuffed. So I removed it and disassembled it. Here is what I discovered:
1. the controller consists of 2 relays, 2 diodes and two fusible links. Cost of the components is about $15. The $225 cost of the unit is extortionate.
2. One of the fusible links had opened.
3. � A check of the switches on the switch bracket indicated that the retract switch was not properly engaged by the positioning rod (ie the switch was not closed)
So, when the flaps were originally activated, extend worked fine. Because the retract switch was not properly engaged (probably intermittent), the flaps would not retract. If the flaps will not retract using the FPS, the only way to retract them is to apply reverse voltage directly to the flap motor. But if the FPS is connected, this will send power the wrong way through the control box and cause one of the fusible links to open.
In summary, there was no initial problem with the controller. The problem was misaligned switches on the switch bracket. Manually retracting the flaps while the FPS was connected cooked the controller and rendered retract permanently u/s.
So here are the lessons:
1. The electronics in the FPS are trivial. If you have an FPS problem it will be very unlikely to be a fault in the controller.
2. If the flaps fail to extend or retract, confirm that the microswitches are being properly opened/closed by the positioning rod along its travel.
3. use a molex or equivalent connector at the flap motor/actuator connector so that the flap can be extended/retracted manually with the controller installed (but disconnected).
I can't see any really compelling reaon for the fusible links, so replaced them with #28 wire - be buggered if I was going to spend another US$225 on a repalcement unit. Checked the switch alignment and bench tested out ok. Will reinstall the electronics in a new case and remount in the tunnel tomorrow night.
Hope this helps for those yet to install.
Ron
-187 finishing (probably forever!!!) | Quote: | | "Warning:The information contained in this email and any attached files isconfidential to BAE Systems Australia. If you are not the intendedrecipient, any use, disclosure or copying of this email or anyattachments is expressly prohibited. If you have received this emailin error, please notify us immediately. VIRUS: Every care has beentaken to ensure this email and its attachments are virus free,however, any loss or damage incurred in using this email is not thesender's responsibility. It is your responsibility to ensure viruschecks are completed before installing any data sent in this email toyour computer." http://www.matronics.com/Navigator?RV10-Listhttp://forums.matronics.com |
0123456789012
[quote][b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
| Back to top |
|
|
sam(at)fr8dog.net
Guest
|
| Posted: Thu Oct 25, 2007 7:31 am Post subject: FPS Lessons Learnt |
|
|
You can't go wrong with the FPS from Aircraft Extras, service is good!
RV Builder (Michael Sausen) wrote:
| Quote: |
Makes me glad it seemed cheesy so I went with the Aircraft Extras FPS. J
*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *David McNeill
*Sent:* Tuesday, October 23, 2007 8:56 PM
*To:* rv10-list(at)matronics.com
*Subject:* RE: FPS Lessons Learnt
He makes me glad I returned mine for credit.
------------------------------------------------------------------------
*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *John W. Cox
*Sent:* Tuesday, October 23, 2007 6:21 PM
*To:* rv10-list(at)matronics.com
*Subject:* RE: FPS Lessons Learnt
Ron, that does indeed help but would be even better if you would
recommend components that us Amateur Radio types should kludge
together to make a superior product. Would gladly send you money to
offset the professional report.
John Cox
------------------------------------------------------------------------
*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *McGANN, Ron
*Sent:* Tuesday, October 23, 2007 4:02 PM
*To:* rv10-list(at)matronics.com
*Subject:* FPS Lessons Learnt
G'day all,
Checked the wiring of the Flap Positioning System again last night.
As a professional Electrical Engineer, I confirmed that there was no
wiring issue and was convinced the FPS controller was stuffed. So I
removed it and disassembled it. Here is what I discovered:
1. the controller consists of 2 relays, 2 diodes and two fusible
links. Cost of the components is about $15. The $225 cost of the
unit is extortionate.
2. One of the fusible links had opened.
3. A check of the switches on the switch bracket indicated that
the retract switch was not properly engaged by the positioning rod (ie
the switch was not closed)
So, when the flaps were originally activated, extend worked fine.
Because the retract switch was not properly engaged (probably
intermittent), the flaps would not retract. If the flaps will not
retract using the FPS, the only way to retract them is to apply
reverse voltage directly to the flap motor. But if the FPS is
connected, this will send power the wrong way through the control box
and cause one of the fusible links to open.
In summary, there was no initial problem with the controller. The
problem was misaligned switches on the switch bracket. Manually
retracting the flaps while the FPS was connected cooked the controller
and rendered retract permanently u/s.
So here are the lessons:
1. The electronics in the FPS are trivial. If you have an FPS
problem it will be very unlikely to be a fault in the controller.
2. If the flaps fail to extend or retract, confirm that the
microswitches are being properly opened/closed by the positioning rod
along its travel.
3. use a molex or equivalent connector at the flap motor/actuator
connector so that the flap can be extended/retracted manually with the
controller installed (but disconnected).
I can't see any really compelling reaon for the fusible links, so
replaced them with #28 wire - be buggered if I was going to spend
another US$225 on a repalcement unit. Checked the switch alignment
and bench tested out ok. Will reinstall the electronics in a new case
and remount in the tunnel tomorrow night.
Hope this helps for those yet to install.
Ron
-187 finishing (probably forever!!!)
"Warning:
The information contained in this email and any attached files is
confidential to BAE Systems Australia. If you are not the intended
recipient, any use, disclosure or copying of this email or any
attachments is expressly prohibited. If you have received this email
in error, please notify us immediately. VIRUS: Every care has been
taken to ensure this email and its attachments are virus free,
however, any loss or damage incurred in using this email is not the
sender's responsibility. It is your responsibility to ensure virus
checks are completed before installing any data sent in this email to
your computer."
* *
* *
*http://www.matronics.com/Navigator?RV10-List*
*http://forums.matronics.com*
* *
* *
* *
* *
* *
* *
* *
* *
**
**
**
**
**
**
*http://www.matronics.com/Navigator?RV10-List*
**
**
**
*http://forums.matronics.com*
**
* *
*
*
|
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
|
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
