BJIII Posted August 16, 2021 Report Share Posted August 16, 2021 1967 M20F This is my 6th ground up Hobby restoration project over a 45 year span. BUT First MOONEY!!! Need suggestions on the best method to seal the exterior avionics panels. The previous owner/shops used 1/16 thick cork tape, but they leak. Thanks Ballard Jones A&P I/A Quote Link to comment Share on other sites More sharing options...
mike20papa Posted August 16, 2021 Report Share Posted August 16, 2021 I use a self adhesive EPDM weather stripping. Yes, I can imagine the cork has little pliability or sealing ability. M-D Building Products All - Climate EPDM Rubber Weatherstrip P - Profile Blain # 039266 | Mfr # 02576 Today's Price $599 available just about anywhere. Will depend on how the aluminum panel fits as to how much of the sealing bulb you might need to trim. My alumn. panel cover is a "stretch to fit" so I trimmed away the bulb to fit. Quote Link to comment Share on other sites More sharing options...
jetdriven Posted August 16, 2021 Report Share Posted August 16, 2021 1/2" b y 1/16" thick polybutylene tape. ebay. it never hardens or dries out. Personally id seal it up with 3/16" solar gray plexiglass. A 201 windshield mod. Quote Link to comment Share on other sites More sharing options...
carusoam Posted August 17, 2021 Report Share Posted August 17, 2021 Welcome aboard BJ! 3M is known for products like this… post some pics along the way… -a- Quote Link to comment Share on other sites More sharing options...
Raymond J1 Posted August 17, 2021 Report Share Posted August 17, 2021 For the 67 F: Originally there is a gummed canvas under the sheets of windshield bay, it is a cotton canvas coated with vinyl treated non-fire (M1), in fact it is a canvas as for the convertible car. This canvas was dark green on mine. Between the canvas and the fuselage structure, there is a flat butyl seal that allows multiple installation and removal. On the sheets of windshield bay, a sound-absorbing material is glued, it is sandwiched between the sheets and the waterproofing canvas. This canvas is not mentioned on the parts manual, just the sound absorbers are included. Quote Link to comment Share on other sites More sharing options...
0TreeLemur Posted August 17, 2021 Report Share Posted August 17, 2021 This.^^^^ I flew the remnants of TS Delta last year. No effect on the avionics. Note: the search function on Mooneyspace is.... lackluster, unless you are trained in Boolean operators and logic. Google is your friend: type: "flying through rain site:mooneyspace.com" into google. Or "sealing instrument bay site:mooneyspace.com" and you'll find lots of stuff. Most questions you will have for Mooneyspace have been answered over-and-over again. Study them and you'll find stuff that works. Good luck. Quote Link to comment Share on other sites More sharing options...
apriav Posted August 17, 2021 Report Share Posted August 17, 2021 201 windshield fixed my panels, a bit pricey but I think worth it. Speed, noise reduction, added visibility, and looks. Quote Link to comment Share on other sites More sharing options...
RLCarter Posted August 17, 2021 Report Share Posted August 17, 2021 this is the stuff I’ve used (was recommended here on MS along with several A&P IA’s) with good results, it’s messy but works. What ever you use look closely at the flange on the airframe, there is a channel for water and there is weep hole on the panels for drainage, these should be free so any water that gets in can drain out 1 Quote Link to comment Share on other sites More sharing options...
tony Posted August 17, 2021 Report Share Posted August 17, 2021 6 hours ago, apriav said: 201 windshield fixed my panels, a bit pricey but I think worth it. Speed, noise reduction, added visibility, and looks. In my opinion, giving up the maintenance access just isn't worth the cool look. Everything then has to be done from under the panel. 1 Quote Link to comment Share on other sites More sharing options...
Raymond J1 Posted August 17, 2021 Report Share Posted August 17, 2021 9 hours ago, RLCarter said: this is the stuff I’ve used (was recommended here on MS along with several A&P IA’s) with good results, it’s messy but works. What ever you use look closely at the flange on the airframe, there is a channel for water and there is weep hole on the panels for drainage, these should be free so any water that gets in can drain out Quote Link to comment Share on other sites More sharing options...
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