Fitting Cowl

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FredHoffman
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Fitting Cowl

Post by FredHoffman »

Hit a small roadblock on fitting my cowl. The hole in the cowl is smaller than the Rotax 912 prop flange! In order to make this work it looks like I will be removing the entire reinforcing lip around the prop flange hole on the cowl. I also have a prop spacer that won't make it any better, adding 1-2 mm in diameter. What have others done?

Fred
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SuperFly
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Re: Fitting Cowl

Post by SuperFly »

I cut mine out Fred. Didnt have a choice. Dont worry about the strength (I was at first), once the cowl is all fastened together, its pretty rigid. Remember to leave some clearance for engine movement, it moves quite a bit. I have about 3/8" to 1/2" of clearance around mine.
Best,
Ben Schneider
Highlander #263 converted to SuperSTOL
N45FT Now Flying!
http://www.stolairplane.com
FredHoffman
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Re: Fitting Cowl

Post by FredHoffman »

Thanks, I was worried about making it weaker too. Today looks like I'm cutting lots of fiberglass !

Fred
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scubarider2
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Re: Fitting Cowl

Post by scubarider2 »

I cut mine from the back end making it shorter. It just touches the exhaust and almost against the radiator. I wish I would have done the front as well.
Dennis
Live as though you were going to die tomorrow, learn as though you were going to live forever...
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gkremers
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Re: Fitting Cowl

Post by gkremers »

Fred,
Thought I would send a few pics that might help. I did use a 1" spacer from Saber on the prop flange, it gives you a little more room near the left from exhaust pipe. Mine is also set with a 1/4" space between the spinner back plate and the cowl.
DSC_0024.JPG
DSC_0172.JPG
DSC_0060.JPG
DSC_0027.JPG
IMG_1234.jpg
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gkremers
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Re: Fitting Cowl

Post by gkremers »

Forgot one.
You'll also need to trim a good amount from the lower cowl to clear the muffler
DSC_0062.JPG
Take care
Gary
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FredHoffman
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Re: Fitting Cowl

Post by FredHoffman »

Thanks Gary, those pictures help.


Fred
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