 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
wreining(at)gmail.com
Guest
|
 Posted: Thu May 10, 2007 10:02 pm Post subject: QB Wing Inspection and Questions |
 |
|
My son and I took a critical look at our QB wings this evening, following the instructions step by step to verify everything was built correctly. Here are our discoveries, up through section 18 (fuel tanks).
<![if !supportLists]>o <![endif]>Main Spar - Page 13-3, step 9 calls for the enlargement of an existing 9/32 hole in the left (only) spar and installation of a snap bushing. This was not done.
<![if !supportLists]>o <![endif]>Main Spar - Page 13-4, step 6 the tie down bracket is cut, tapped and drilled. The tie down bracket in both wings was never tapped!
<![if !supportLists]>o <![endif]>Fuel Tanks - Page 18-8, step 5 the tanks all installed. A note was included with our QB wings warning that “the fuel tanks are secured for shipping purposes ONLY by a few screws through the tank skin and several bolts through the Z-brackets. It is expected that the builder will install the rest of these critical fasteners before the airplane is inspected or flown.” Well, all of the screws and bolts were attached, but about half of the bolts for the Z-brackets were not fully tightened – glad we checked them with the torque wrench!
We have a couple of questions:
1. What’s the purpose of the bushing through the spar specified on page 13-3?
2. Where are the instructions for testing the fuel tanks for leaks?
Bill and Jon Reining
40514 – QB wings
[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 |
|
 |
Mike Whisky
Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
|
| Posted: Fri May 11, 2007 12:17 am Post subject: Re: QB Wing Inspection and Questions |
|
|
Hello Bill & John,
the snap bushig is used to guide the wire of the stall warning from the leading edge through the spar. It is only requires for the left wing.
MY QB Wings were in the exact same state, but all screws were tightend. Anyway I had to remove the left tank to install the stall warning in th eleading edge.
The tigh downs are not tapped too, if you tap them make sure that the chips & oil will not drop into the inside of the wing since you can't get to them easlily.
Best Regards
Michael
| | - 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 |
|
_________________
RV-10 builder (flying)
#511 |
|
| Back to top |
|
|
MauleDriver(at)nc.rr.com
Guest
|
| Posted: Fri May 11, 2007 2:20 am Post subject: QB Wing Inspection and Questions |
|
|
My QB wings were also in the same exact state. You'll need to buy the
bushing (get a bunch of the them in differents sizes).
It's not exactly clear where to start and with what... you have to jump
around a little. You'll need to add all the platenuts around the root
of the both top and bottom skins
For QB tank testing, Vans has a little low cost kit with 2 tank fittings
in it plus instructions that include the use of a ballloon as a pressure
guage. I haven't done it yet but net of it is that you want to
pressurize the tanks *gently* and use soap suds to check for leaks. The
balloon insures less than 1psi is used.
Michael Wellenzohn wrote:
| Quote: |
Hello Bill & John,
the snap bushig is used to guide the wire of the stall warning from the leading edge through the spar. It is only requires for the left wing.
MY QB Wings were in the exact same state, but all screws were tightend. Anyway I had to remove the left tank to install the stall warning in th eleading edge.
The tigh downs are not tapped too, if you tap them make sure that the chips & oil will not drop into the inside of the wing since you can't get to them easlily.
Best Regards
Michael
--------
RV-10 builder (wings)
#511
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=112194#112194
|
| | - 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 |
|
|
millstees(at)ameritech.ne
Guest
|
| Posted: Fri May 11, 2007 7:18 am Post subject: QB Wing Inspection and Questions |
|
|
Bill & Jon:
Pressure testing the tank is easy. I just plumbed a valve into one fitting, and a section of aluminium tubing into the other. I then applied compressed air through the valve to inflate a balloon that I taped to the aluminium tubing, and closed the valve. If the balloon is still inflated the next morning, you have a good tank.
Best of luck !
Steve Mills N750SM (reserved)
RV-10 40486 Slow-build
Naperville, Illinois
Finishing kit
Do Not Archive
--
| | - 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 |
|
|
DAVELEIKAM(at)wi.rr.com
Guest
|
| Posted: Fri May 11, 2007 7:52 pm Post subject: QB Wing Inspection and Questions |
|
|
How do you adjust the fuel sending floats in the QB tanks? You cannot access the inside of the tanks to adjust travel of the floats.
Dave Leikam
40496
QB wings
[quote] ---
| | - 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 |
|
|
MauleDriver(at)nc.rr.com
Guest
|
| Posted: Sat May 12, 2007 4:18 am Post subject: QB Wing Inspection and Questions |
|
|
There's some detailed writeups in the Matronics archives. Short version
is that entire assembly can be inserted thru the hole in which it is
mounted. There is some potential interference with some of the tank
stiffener J channels which can make it a time consuming process. I went
to the solution that involves turning the float 90deg into a vertical
orientation. You lose about some fraction of an inch in travel but the
adjustment becomes easy. You use a multimeter to check the travel.
It's impossible to fully describe or understand until you have it in
your hands.
I recommend removing the tanks from the wing for inspection. It can also
make the sender installation a bit easier but it's not required.
Dave Leikam wrote:
[quote] How do you adjust the fuel sending floats in the QB tanks? You cannot
access the inside of the tanks to adjust travel of the floats.
Dave Leikam
40496
QB wings
---
| | - 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
