hole in cowling for brackett filter?

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8475
Posts: 63
Joined: Sun May 26, 2019 11:38 am
Name: Dave Sprinkle
Location: SF Bay
Aircraft Type: 140
Occupation-Interests: Engineer
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hole in cowling for brackett filter?

Post by 8475 »

My 140 has a Brackett air filter. The cowling has an ugly hole to clear the filter frame, with a kind of "field-fit" level of quality. The hole is definitely not to the kind of quality I'd expect from the factory. I've never seen a factory air filter, though. Can anyone comment on this? Does a factory filter installation have a more polished cowling hole? Any pics of a factory setup?
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6643
Posts: 2469
Joined: Tue May 01, 2018 7:00 am
Name: John C
Location: KLCI, NH
Aircraft Type: 1946 C140/C90
Occupation-Interests: A&P, semi-retired
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Re: hole in cowling for brackett filter?

Post by 6643 »

The hole should be the same. My guess is your cowl has been repaired, or "modified" to fit sagging engine mounts. Is it the right filter? BA-4106?

There's not much to it; it's just a hole. I have a couple of thousand pictures from the old forum, unindexed, of course. That hole is not real photogenic, I guess. Here's a picture of a cowl someone is restoring.
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20140623_0727291_132.jpg
20140623_0727291_132.jpg (114.16 KiB) Viewed 2982 times
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