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Fergus Kyle
Joined: 03 Jun 2007
Posts: 291
Location: Burlington ON Canada
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 Posted: Sun Sep 30, 2007 11:47 am Post subject: Exhaust exit spacing |
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Hello,
This afternoon's task was to poke a hole through the lower cowling
to permit the extension of the exhaust stack to experience fresh air. I have
done this accurately in spite of being certain that measurement and cutting
was at best a mug's game. I am erecting a message with photos to explain
this job, as have amazed myself by doing it. If you found it a simple task
any fool can do, I don't want to hear about it.
In the process of admiring the stub sticking exactly 1/8" from its
concentric hole, it suddenly occurred to me that it's on a bouncing engine
and the cowl is not.
I don't want to hear about that, either.
Nonetheless I now appeal - to those in the know - what sort of
leeway all around this triumph must I leave to prevent burning and chafing
of the cowl? Is 1/4" enough - 5/16"? - 3/8"?
I guess the engine can wriggle all around the clock but suspect it
prefers to nod in answer to my landings and their excuses - rough turf
predominantly. Your experiences and suggestions heartily welcomed.
Happy landings,
Ferg
Wiring wiring
PS: I prefer a reply here rather than on the owners' web as it refuses my
sign-in about 50% of the tries.
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topglock(at)cox.net
Guest
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| Posted: Sun Sep 30, 2007 5:36 pm Post subject: Exhaust exit spacing |
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Ferg, my trigear exhaust clears the hole by about 1/4". No rubbing or
burning to report...
Jeff - Baby Blue
333 hrs
Fergus Kyle wrote:
| Quote: |
Hello,
This afternoon's task was to poke a hole through the lower cowling
to permit the extension of the exhaust stack to experience fresh air. I have
done this accurately in spite of being certain that measurement and cutting
was at best a mug's game. I am erecting a message with photos to explain
this job, as have amazed myself by doing it. If you found it a simple task
any fool can do, I don't want to hear about it.
In the process of admiring the stub sticking exactly 1/8" from its
concentric hole, it suddenly occurred to me that it's on a bouncing engine
and the cowl is not.
I don't want to hear about that, either.
Nonetheless I now appeal - to those in the know - what sort of
leeway all around this triumph must I leave to prevent burning and chafing
of the cowl? Is 1/4" enough - 5/16"? - 3/8"?
I guess the engine can wriggle all around the clock but suspect it
prefers to nod in answer to my landings and their excuses - rough turf
predominantly. Your experiences and suggestions heartily welcomed.
Happy landings,
Ferg
Wiring wiring
PS: I prefer a reply here rather than on the owners' web as it refuses my
sign-in about 50% of the tries.
|
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