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GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
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 Posted: Fri Jul 03, 2009 9:55 am Post subject: Cowling question |
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I wonder if all of you out there in Team-Grumman land would do me a favor.
I'm in the process of fitting a cowling to a plane. The initial fitting seemed to be more difficult than usual, or as expected. Upon close inspection, two of the engine mount bushings/isolators were not the correct parts. I ordered all new bushings/isolators. Upon installation, the lower left mount had been installed totally wrong.
After installing the new bushings/isolators, the cowling fit better, but, it seemed like the cowling was WAAAAY too long for the scribe marks on the cowling. (to where the cowling should be trimmed.) Well, by a good quarter of an inch anyway.
So, I measured my plane: 40 inches from the back of the cowling to the back of the spinner. The plane I was installing the cowling measured 39 3/4 inches.
So, I drove around the airport and measured two other Grummans. Both were 39 3/4 inches. So, I measured the distance from the firewall to the engine mount on all of the available Grummans. The engine mount on my plane is 1/4 inch further from the firewall than the others.
So, if you could do me a favor and measure the distance from the back of the cowling hinge to the back of the spinner I would appreciate it. It's important that I know what the installed distance is for trimming the cowling.
Please post to Team-Grumman. Thanks.
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Gary
AuCountry Aviation
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david(at)newlangsyne.com
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| Posted: Sun Jul 05, 2009 9:53 am Post subject: Cowling question |
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1991 Tiger
back of piano hinge to back of spinner
39-3/4"
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david(at)newlangsyne.com
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| Posted: Sun Jul 05, 2009 10:52 am Post subject: Cowling question |
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1979 Tiger
different plane from previous post
also 39-3/4"
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Discover
Joined: 26 Feb 2007
Posts: 429
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| Posted: Sun Jul 05, 2009 11:05 am Post subject: Cowling question |
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Gary,
Can you give a different reference for the measurement? With the MT
prop it's spinner is in a different place than with the Sensenich. I
could get a good measurement from the firewall to the Starter ring
gear as the entire cowling is off right now. Would that work or?
Would be a great time to put on the Jaguar cowl...hint hint
On Jul 5, 2009, at 1:46 PM, "David Feinstein" <david(at)newlangsyne.com>
wrote:
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>
1979 Tiger
different plane from previous post
also 39-3/4"
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lmassaro(at)tac-eng.com
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| Posted: Sun Jul 12, 2009 4:42 am Post subject: Cowling question |
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Hey GAry,
for reference
39.75 inches give or take a few thousandths of an inch on mine
1992 AG-5B
9186M
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