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  #1  
Old 12-20-2015, 07:40 AM
dwilson dwilson is offline
 
Join Date: Jul 2005
Posts: 432
Default Need help with air seal around governor

I am struggling with how to seal around the MT governor/air inlet ramp on my RV10.

How did you seal over the top of the governor?
Any pictures would be appreciated.

Thanks
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Duane Wilson

RV9A. Built, flew 1000 hours, Sold

RV10 306 hours

Southwest Washington
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  #2  
Old 12-20-2015, 08:03 AM
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9GT 9GT is offline
 
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Location: Southern Michigan
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I used a contour guide to get the right shape and transferred that on the aluminum and baffle material for a good fit around the governor, then just kind of eyeballed the shape of the top cut of the baffle material to match the pictures in the baffle section of the plans. I just replaced mine a couple weeks ago when I replaced the cylinders. I checked the fit with the top cowling in place and found a couple small gaps where the baffle material meets the cowling and folds over. Its a better fit than my original but there is still room for improvement.
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Howell, MI

RV-9A: Under Construction.
RV-10: Completed 12/29/2013 SOLD 08/23/2016

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  #3  
Old 12-20-2015, 10:55 PM
dwilson dwilson is offline
 
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Posts: 432
Default Would still like to see a picture

Thanks David,
I think I understand your explanation, but was hoping someone could post a picture of the cowl top and inlet ramp as well as the baffle right around the governor.
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Duane Wilson

RV9A. Built, flew 1000 hours, Sold

RV10 306 hours

Southwest Washington
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  #4  
Old 12-21-2015, 06:03 AM
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rleffler rleffler is offline
 
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Location: Delaware, OH (KDLZ)
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Quote:
Originally Posted by dwilson View Post
Thanks David,
I think I understand your explanation, but was hoping someone could post a picture of the cowl top and inlet ramp as well as the baffle right around the governor.
Some parts just have to be fabricated by trial and error.

Here's a photo on my inlet ramp. I don't have any other photos.



After you have the ramp glassed into the cowl top, set the cowl in place. Take a sharpie and trace the outline of your governor. Cut the ramp well short of your lines and incrementally keep trimming until it fits.

The baffle material is straight forward. There shouldn't be any mysteries there.
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N410BL - RV10 Flying
http://mykitlog.com/rleffler
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  #5  
Old 12-21-2015, 06:38 AM
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aturner aturner is offline
 
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Location: Clarion, Pennsylvania
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A good post on this topic by Ernst, fouth one down in this thread: http://www.vansairforce.com/communit...overnor+baffle

If you do this carefully, you will have baffle seal extending over the top of the governor, and sealing against the inlet ramp. This approach minimizes leaks of cooling air.
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-Andy Turner
RV-10 N784JC

Last edited by aturner : 12-21-2015 at 06:46 AM.
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  #6  
Old 12-22-2015, 09:49 AM
dwilson dwilson is offline
 
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Posts: 432
Default Thanks for the advice

Thanks fellows,
I appreciate the pictures and the advice. I will post what I come up with regarding how to use the rubberized fabric over the top of the governor to effect a good seal.
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Duane Wilson

RV9A. Built, flew 1000 hours, Sold

RV10 306 hours

Southwest Washington
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  #7  
Old 12-22-2015, 11:16 AM
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rleffler rleffler is offline
 
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Quote:
Originally Posted by dwilson View Post
Thanks fellows,
I appreciate the pictures and the advice. I will post what I come up with regarding how to use the rubberized fabric over the top of the governor to effect a good seal.
Duane,

Don't take this the wrong way, but you are thinking about this way too hard. All you need is a strip of fabric, blind rivet in front of the governor, follow the contour of the governor, and blind rivet at the rear. Trim as necessary. It will naturally lay over due to the contour and seal against the cowl top.

This photo link may not work, since it's on FB, especially for those that aren't currently "friends".

https://scontent.xx.fbcdn.net/hphoto...e6&oe=570D78DF

bob
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  #8  
Old 12-22-2015, 11:36 AM
dwilson dwilson is offline
 
Join Date: Jul 2005
Posts: 432
Default OK, it makes sense

Thanks Bob,
Sometimes a "boot to the head" is just what is needed. I get it now.

For a good laugh this is what "boot to the head" refers to.
https://www.youtube.com/watch?v=Z8VD4JXUozM
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Duane Wilson

RV9A. Built, flew 1000 hours, Sold

RV10 306 hours

Southwest Washington

Last edited by dwilson : 12-22-2015 at 11:41 AM.
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  #9  
Old 08-16-2019, 12:34 PM
TryChick TryChick is offline
 
Join Date: May 2017
Location: New Albany, IN
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So Bob, what about the upper cowl inlet ramps? Both the left and right ramps on ours come down right on the two front baffle pieces. Did you trim the ramps or the aluminum part of the baffle?
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