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Old 06-08-2021, 11:51 AM
AAflyer's Avatar
AAflyer AAflyer is offline
Join Date: May 2009
Location: Fort Mill, South Carolina
Posts: 376
Cool K.I.S.S.

Originally Posted by DanH View Post
slap some tape on the backside, wipe wet flox mix into the depression. cure, sand flush if needed, re-drill, countersink again.

Or just stop countersinking fiberglass. AN526's with nylon washers is the long term bulletproof solution.
Yep...I did THIS ^^^^

Hardly miss the .00005 knots at cruise.
Bruce Windom
QB RV-8 N148BW
First Flight: Oct '16
AeroSport Power IO-360 180hp w/dual P-Mags
Catto 3-blade, with black carbon spinner.
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Old 06-10-2021, 07:39 PM
Bcone1381 Bcone1381 is offline
Join Date: Dec 2015
Location: Chelsea, MI
Posts: 84

Originally Posted by AAflyer View Post
Yep...I did THIS ^^^^

Hardly miss the .00005 knots at cruise.
To help you understand why this works so well, understand that the Cotton Flox they are talking about when mixed with epoxy is rock hard. It also is cheap, light, and easy to get. If this is new to you...I suspect it is...then go for it. You wont mess it up. Just mix up a tablespoon of epoxy (stir of two minutes) in a paper cup, then add flox so its a constancy of between mayonnaise and peanut butter and then use a Hotel key card or credit card to wipe it over the hole you are repairing. You'll have it done in thirty minutes.
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Old 06-10-2021, 07:58 PM
RV10Pilot RV10Pilot is offline
Join Date: Jan 2005
Location: Medford, NJ USA
Posts: 428

Thanks for all the help. Packing tape on the backside, wet epoxy flox mix. Coated the hole with neat epoxy and then applied the flox mix. A small piece of peel ply on the top and let it cure.

I drew a line from the center of the screw hole and marked 2" and 4". Put the fairing back on and then used the line and markings as a guide to drill the hole. Worked perfectly.
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