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  #11  
Old 09-06-2016, 06:56 AM
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I have not yet addressed the area around the ring carier, but as far as I'm concerned, this is how you do the perimeter:





One piece of rubber and even clamping at the fasteners assures minimal leakage. I have a few hundred hours on it now and the edges of the seal show perfect contact with the upper cowl.
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  #12  
Old 09-06-2016, 07:56 AM
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Curious if people have better luck with more rigid and traditional baffle seal material than what Van's supplies. I have a few spots where it "puckers". This may be my "it's too cold to fly" winter project.
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  #13  
Old 09-06-2016, 08:20 AM
mturnerb mturnerb is offline
 
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Quote:
Originally Posted by Toobuilder View Post
I have not yet addressed the area around the ring carier, but as far as I'm concerned, this is how you do the perimeter:





One piece of rubber and even clamping at the fasteners assures minimal leakage. I have a few hundred hours on it now and the edges of the seal show perfect contact with the upper cowl.
This looks quite a bit like the Bonanza "go to" baffles from D'Shannon. I installed them on my Bonanza and almost never see CHT's above 380- and that only in climb on a hot day. (Of course it also has cowl flaps).
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  #14  
Old 09-06-2016, 08:41 AM
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Default atta boy!

Quote:
Originally Posted by Toobuilder View Post
I have not yet addressed the area around the ring carier, but as far as I'm concerned, this is how you do the perimeter:



One piece of rubber and even clamping at the fasteners assures minimal leakage. I have a few hundred hours on it now and the edges of the seal show perfect contact with the upper cowl.
I think there should be an HBO Special telling us how to do this. Lacking that, a youtube video would do...

Carry on!
Mark
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  #15  
Old 09-06-2016, 09:22 AM
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Quote:
Originally Posted by F1Boss View Post
I think there should be an HBO Special telling us how to do this. Lacking that, a youtube video would do...

Carry on!
Mark
The ?HBO special? wouldn?t last very long ? this is a lot easier than it looks!

I discuss the ?how to? a bit in this thread:

If anyone has any questions after seeing the above ? shoot. I?m happy to share my methods.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

Michael Robinson
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RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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  #16  
Old 09-06-2016, 09:50 AM
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Question

My biggest head scratcher was at the intersection of the baffle strips and the parts attached to the lower cowl. This include how much to trim off Vans baffle kit at the air inlets.

It seems to be an area that is hard to photograph and the baffle instruction are sparse in this area...
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  #17  
Old 09-06-2016, 10:12 AM
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Steve Melton Steve Melton is offline
 
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Quote:
Originally Posted by Toobuilder View Post
I have not yet addressed the area around the ring carier, but as far as I'm concerned, this is how you do the perimeter:





One piece of rubber and even clamping at the fasteners assures minimal leakage. I have a few hundred hours on it now and the edges of the seal show perfect contact with the upper cowl.
silicone is my next upgrade. what is the difference between the blue and red silicone other than the color? thx
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  #18  
Old 09-06-2016, 08:30 PM
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Default Baffle Seals

I used the one-piece with backing strips method with the Vans material. The back and sides are not too difficult to get to follow the contour of the cowl exactly. The front parts are a little more challenging, but I think can be done this way also.

[IMG]BafflesLeft by Jim Carey, on Flickr[/IMG]
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  #19  
Old 09-06-2016, 08:44 PM
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Default Engine Mount Covers

I live next door to a real craftsman who showed me how to make these round engine mount covers that look like they belong in a bra... They were hammered out of 3003 soft sheet, annealed once during the process. I had to rivet an extension on to the front baffle near cyl #1 because the gap was too wide to fill with RTV.

[IMG]Baffles Front by Jim Carey, on Flickr[/IMG]
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  #20  
Old 09-06-2016, 10:13 PM
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Quote:
Originally Posted by Paddy View Post
I live next door to a real craftsman who showed me how to make these round engine mount covers .......
I like those - a thread describing the process would be great...hint...hint
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