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Blast tube for Alternator

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ddddsp1(at)juno.com
Guest

Posted: Sat Oct 28, 2006 8:54 am Post subject: Blast tube for Alternator

Hey guys, 

I am curious how many have run a blast tube to the alternator?  It looks like Deb and JIM ran one from the air inlet on the right side but I don't remembed seeing any others.  Planepower  recommends it in the instructions.  If you are running one WHERE are you locating it to get the air? 

ALSO....I have the smaller pulley and cannot use the alternator belt Vans sends with the Plane power 60 amp unit.  If anyone has a need for it and the camlocks for the OIL door let me know.  These will only get duty around here. 

DEAN 40449 



________________________________________________________________________

 Visit http://www.juno.com/value to sign up today!

    [quote][b]

jesse(at)itecusa.org
Guest

Posted: Sat Oct 28, 2006 9:16 am Post subject: Blast tube for Alternator

We have put in the blast tube for the alternator.  I don’t know if it is needed or not, but I remember seeing it on the baffle instructions from Van’s. so they must have one on theirs.  We put it on the right inlet air ramp.  

   

Do not archive.  

     

Jesse Saint  

I-TEC, Inc.  

jesse(at)itecusa.org (jesse(at)itecusa.org)  

www.itecusa.org  

W: 352-465-4545  

C: 352-427-0285  

        

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of ddddsp1(at)juno.com

 Sent: Saturday, October 28, 2006 12:53 PM

 To: rv10-list(at)matronics.com

 Subject: Blast tube for Alternator  

  

   

Hey guys,  

I am curious how many have run a blast tube to the alternator?  It looks like Deb and JIM ran one from the air inlet on the right side but I don't remembed seeing any others.  Planepower  recommends it in the instructions.  If you are running one WHERE are you locating it to get the air?  

ALSO....I have the smaller pulley and cannot use the alternator belt Vans sends with the Plane power 60 amp unit.  If anyone has a need for it and the camlocks for the OIL door let me know.  These will only get duty around here.  

DEAN 40449  



 

 ________________________________________________________________________

 Visit http://www.juno.com/value to sign up today!   	  Quote: 	
		    http://www.matronics.com/Navigator?RV10-List 	
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     --  Release Date: 10/27/2006 

  

--

 10/27/2006

     [quote][b]

Tim(at)MyRV10.com
Guest

Posted: Sat Oct 28, 2006 9:19 am Post subject: Blast tube for Alternator

I did too.  Right side lower ramp area.



Tim Olson - RV-10 N104CD - Flying

do not archive

ddddsp1(at)juno.com wrote:

 	  Quote: 	
		   Hey guys,

 

 I am curious how many have run a blast tube to the alternator?  It looks 

 like Deb and JIM ran one from the air inlet on the right side but I 

 don't remembed seeing any others.  Planepower  recommends it in the 

 instructions.  If you are running one WHERE are you locating it to get 

 the air?

 

 ALSO....I have the smaller pulley and cannot use the alternator belt 

 Vans sends with the Plane power 60 amp unit.  If anyone has a need for 

 it and the camlocks for the OIL door let me know.  These will only get 

 duty around here.

 

 DEAN 40449

ddddsp1(at)juno.com
Guest

Posted: Sat Oct 28, 2006 10:26 am Post subject: Blast tube for Alternator

Tim and Jesse, 

How big of an inlet / hose did you use? where did you get the hardware to rivet to the air ramp? 

DEAN 



________________________________________________________________________

 Visit http://www.juno.com/value to sign up today!

    [quote][b]

Tim(at)MyRV10.com
Guest

Posted: Sat Oct 28, 2006 10:47 am Post subject: Blast tube for Alternator

You should have received the blast tube bracket for the rear of

the alternator along with the alternator.  Then you just buy

some SCAT hose from Aircraft Spruce or similar, and they also

sell the aluminum flanges for the SCAT too.   Should be

probably about $10 for everything I'd guess.  I think it's

1" SCAT, but it might be smaller.

Tim Olson - RV-10 N104CD - Flying

do not archive

ddddsp1(at)juno.com wrote:

 	  Quote: 	
		   Tim and Jesse,

 

 How big of an inlet / hose did you use? where did you get the hardware 

 to rivet to the air ramp?

 

 DEAN

jesse(at)itecusa.org
Guest

Posted: Sat Oct 28, 2006 6:16 pm Post subject: Blast tube for Alternator

I just used the corrugated hose that comes in the blast tube kit.  You drill a hole the size of the smaller OD and then squeeze the tube through it so there is one “rib” sticking through the hole and then seal around it so it doesn’t come loose.  I don’t think there is any riveting involved, at least with the small stuff (about ¾”) that I used.  

     

Jesse Saint  

I-TEC, Inc.  

jesse(at)itecusa.org (jesse(at)itecusa.org)  

www.itecusa.org  

W: 352-465-4545  

C: 352-427-0285  

        

  

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of ddddsp1(at)juno.com

 Sent: Saturday, October 28, 2006 2:24 PM

 To: rv10-list(at)matronics.com

 Subject: Re: Blast tube for Alternator  

  

   

Tim and Jesse,  

How big of an inlet / hose did you use? where did you get the hardware to rivet to the air ramp?  

DEAN  



 

 ________________________________________________________________________

 Visit http://www.juno.com/value to sign up today!   	  Quote: 	
		    http://www.matronics.com/Navigator?RV10-List 	
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     --  Release Date: 10/27/2006 

  

--

 10/27/2006

     [quote][b]

Tim(at)MyRV10.com
Guest

Posted: Sun Oct 29, 2006 7:09 am Post subject: Blast tube for Alternator

Dean, Jesse's question is making me ask another question...  When you

get the Plane-Power alternator from Van's, do you not get the

metal flange with it to attach SCAT to the back of the alternator?

If you do, then I would think it would clearly mean you don't use

the corrugated black blast tube material.  I got my Plane-Power

alternator direct from them, not from Van's, so I'm trying to determine

if they somehow changed what they give for hardware to "cheapen"

it to the Van's specs.  If you did get an approximately 1" flange

though, then you'll be using the same 1" SCAT that I did, most likely.



Sorry I don't have great photos of this...I'll have to rectify that,

but here's one where you can make out the SCAT tube on the

alternator:

http://www.myrv10.com/N104CD/finishing/20051228/RV200512270048.html



And here's a huge one where you can just make out the flange on

the lower ramp on the right side:

http://www.myrv10.com/N104CD/photos/20060326/RV200603260029.jpg



Tim Olson - RV-10 N104CD - Flying

do not archive

Jesse Saint wrote:

 	  Quote: 	
		   I just used the corrugated hose that comes in the blast tube kit.  You 

 drill a hole the size of the smaller OD and then squeeze the tube 

 through it so there is one “rib” sticking through the hole and then seal 

 around it so it doesn’t come loose.  I don’t think there is any riveting 

 involved, at least with the small stuff (about ¾”) that I used.

 

  

 

 Jesse Saint

 

 I-TEC, Inc.

 

 jesse(at)itecusa.org <mailto:jesse(at)itecusa.org>

 

 www.itecusa.org <http://www.itecusa.org>

 

 W: 352-465-4545

 

 C: 352-427-0285

 

 ------------------------------------------------------------------------

 

 *From:* owner-rv10-list-server(at)matronics.com 

 [mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of 

 *ddddsp1(at)juno.com

 *Sent:* Saturday, October 28, 2006 2:24 PM

 *To:* rv10-list(at)matronics.com

 *Subject:* Re: Blast tube for Alternator

 

  

 

 Tim and Jesse,

 

 How big of an inlet / hose did you use? where did you get the hardware 

 to rivet to the air ramp?

 

 DEAN

 

 

 

 ________________________________________________________________________

 

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 -- Release Date: 10/27/2006

 

 --

 10/27/2006

 

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ddddsp1(at)juno.com
Guest

Posted: Sun Oct 29, 2006 7:40 am Post subject: Blast tube for Alternator

Tim, 

Vans does NOT send any scat tube or flange with the alternator.  The instructions tell you to hook one up but does not say where or give you the hardware to do so.   It appears yours is aimed right into the rear of the alternator.   How did you attach the scat to the alternator?  Anyway to get a better pic of that........hoping to fabricate a piece to attach the scat to the alt. or clamp it so it is directed at the rear of it. 

Thanks, 

DEAN 40449 



________________________________________________________________________

 Visit http://www.juno.com/value to sign up today!

    [quote][b]

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Sun Oct 29, 2006 8:41 am Post subject: Blast tube for Alternator

In reading this I'm asking myself another question that I would 

appreciate someone/anyone addressing: Is this (blast tube) 

recommended/required for ALL alternator installations or is it 

particular to the plane power installation. The reason I'm asking is 

that I purchased the B&C alternators and am wondering if they 

need/require the same. If the answer is yes does the SD-20 also require 

a blast tube?



THANKS



Deems Davis # 406

Finishing - ( A Misnomer ! )

http://deemsrv10.com/

ddddsp1(at)juno.com wrote:



 	  Quote: 	
		   Tim,



 Vans does NOT send any scat tube or flange with the alternator.  The 

 instructions tell you to hook one up but does not say where or give 

 you the hardware to do so.   It appears yours is aimed right into the 

 rear of the alternator.   How did you attach the scat to the 

 alternator?  Anyway to get a better pic of that.........hoping to 

 fabricate a piece to attach the scat to the alt. or clamp it so it is 

 directed at the rear of it.



 Thanks,



 DEAN 40449



*

*

Tim(at)MyRV10.com
Guest

Posted: Sun Oct 29, 2006 9:46 am Post subject: Blast tube for Alternator

Is this the "deluxe" alternator, which is the Plane-power?  And is it

the 70A, or 60A?   Mine is the 70A alternator.  It came with a 3-eared

piece that bolts onto the alternator, and has a flange on it so that

you can attach 1" SCAT.  I'm not sure what they packaged with the

Plane-Power 60A, but I'd bet it's similar.  The thing is, I can

easily see the install kit being "cheapened" by Van's....that is,

Plane power sells one thing, but Van's sells 95% of it to save

cost.   I would suggest that you call plane-power directly and

ask them about the SCAT tubing onto the alternator...perhaps if

the above is the case, you can get them to send you the proper

flange piece.  I'm not sure if Van's is carrying the 70A and

the 60A, or just the 60A.  The 70A is a very nice alternator

and fits well too.  Not that I need it, as my total draw is

about 27-36A, depending on if it's day or night.



Tim Olson - RV-10 N104CD - Flying

do not archive

ddddsp1(at)juno.com wrote:

 	  Quote: 	
		   Tim,

 

 Vans does NOT send any scat tube or flange with the alternator.  The 

 instructions tell you to hook one up but does not say where or give you 

 the hardware to do so.   It appears yours is aimed right into the rear 

 of the alternator.   How did you attach the scat to the alternator?  

 Anyway to get a better pic of that.........hoping to fabricate a piece 

 to attach the scat to the alt. or clamp it so it is directed at the rear 

 of it.

 

 Thanks,

 

 DEAN 40449

 

 

 

 ________________________________________________________________________

 

 *

 

 

 *

Tim(at)MyRV10.com
Guest

Posted: Sun Oct 29, 2006 9:49 am Post subject: Blast tube for Alternator

Blast tube's are common items on alternators on many certified planes.

Not all alternator companies really plan all installations around

them though.  I'm sure there are people out there with tubes on

their B&C's, but probably hundreds without too.  The same will be

the case with most any alternator.  The thing about alternators

though, is they last longer and perform better when they're not

hot, so it's a good idea...something that at least should be

thought about, but dealt with however you choose.    I don't

know if the SD-20 would have an arrangement for one or not, seeing

as it's a standby, but if it were in use, it might be nice.

Blast tubes are also used on Mags, and on fuel pumps.  I've been

working with Aircraft Spruce to get them to start carrying one of

the fuel pump cooling shrouds so that we can blast cool our fuel

pumps too, like on some installations.  It sounds like they

should be carrying them within a couple months or so.

Tim Olson - RV-10 N104CD - Flying

do not archive

Deems Davis wrote:

 	  Quote: 	

 In reading this I'm asking myself another question that I would 

 appreciate someone/anyone addressing: Is this (blast tube) 

 recommended/required for ALL alternator installations or is it 

 particular to the plane power installation. The reason I'm asking is 

 that I purchased the B&C alternators and am wondering if they 

 need/require the same. If the answer is yes does the SD-20 also require 

 a blast tube?

 THANKS

 Deems Davis # 406

 Finishing - ( A Misnomer ! )

 http://deemsrv10.com/

 ddddsp1(at)juno.com wrote:

> Tim,

>

> Vans does NOT send any scat tube or flange with the alternator.  The 

> instructions tell you to hook one up but does not say where or give 

> you the hardware to do so.   It appears yours is aimed right into the 

> rear of the alternator.   How did you attach the scat to the 

> alternator?  Anyway to get a better pic of that.........hoping to 

> fabricate a piece to attach the scat to the alt. or clamp it so it is 

> directed at the rear of it.

>

> Thanks,

>

> DEAN 40449

>

> *

> *

>

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Mon Oct 30, 2006 9:39 am Post subject: Blast tube for Alternator

FYI, I wrote to B&C regarding this question and whether it was a 

recommendation for their alternators. I received their response today as 

follows:.



Deems,

 

Whether an alternator needs a SCAT or not is part of the design of the 

alternator. We have never recommended a SCAT nor do we have provisions 

for one on the alternator. Our alternator is always mounted under the 

cylinders of a Lycoming and we have not seen any heat related failures. 

Some builders provide a SCAT anyway and just point it at the rear of the 

alternator where the diodes are.

 

Tim Hedding

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