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11-27-2019, 04:43 PM
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Join Date: Sep 2019
Location: Windsor, Ontario
Posts: 224
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Pro Seal Substitute
Has anyone used JB Weld or some type of Gorilla glue instead of pro seal for attaching the foam ribs in the trim tab and elevator?
I used JB Weld on another project and it was very nice to work with versus pro seal.
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Glenn Martin
Windsor, Ontario
1942 Tiger Moth
2017 Waco YMF-5
Kit # 140694
Received RV-14 Empennage Kit October 22, 2019
Started Tail Cone Dec 2019
Received QB Kit April 2020
Finished a mounted Tail Surfaces to Fuselage June 2020
2020 Dues Paid
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11-27-2019, 05:40 PM
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Join Date: Aug 2019
Location: Western Australia
Posts: 333
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Silicone
I used neutral cure silicone, as advised by my inspector.
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Paul vS (yes I'm also a Van)
Building RV-6A #22320 O-320 FP. Wings and tail complete, working on fuselage
Flying my low-n-slow Aeroprakt A-22 and the aero club's RV-9A while I build
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11-27-2019, 11:18 PM
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Join Date: Sep 2018
Location: NSW, Australia
Posts: 156
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3M VHB tape
I used the VHB double sided tape that Van's sell, and they also mention (somewhere) that this product is a substitute for pro-seal in the applications you talk about.
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RV-9, Tail Feathers done, Wings almost done.
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11-28-2019, 05:12 AM
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Join Date: Sep 2019
Location: Windsor, Ontario
Posts: 224
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Quote:
Originally Posted by GeoffP
I used the VHB double sided tape that Van's sell, and they also mention (somewhere) that this product is a substitute for pro-seal in the applications you talk about.
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Thanks I have some for the trailing edge but did not realize it is a substitute for the foam ribs.
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Glenn Martin
Windsor, Ontario
1942 Tiger Moth
2017 Waco YMF-5
Kit # 140694
Received RV-14 Empennage Kit October 22, 2019
Started Tail Cone Dec 2019
Received QB Kit April 2020
Finished a mounted Tail Surfaces to Fuselage June 2020
2020 Dues Paid
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11-28-2019, 08:13 AM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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I am pretty sure the VHB tape has never been approved for installing the foam
ribs.
I would strongly recommend against it.
I wouldn't recommend using silicone adheasive either.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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11-28-2019, 08:28 AM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,435
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Also, JB Weld is fairly brittle, so I wouldn't use it.
Stick with the plans and it'll work out best.
Dave
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11-28-2019, 09:08 AM
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Join Date: Jan 2005
Location: NC25
Posts: 3,507
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Pro Seal is a brand name of Mil Spec Polysulfide. Any product that meets the same Mil Spec would be good.
I would not recommend any substitute that does not meet the same Mil Spec especially in any moving aircraft surface.
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Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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11-28-2019, 10:36 AM
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Join Date: Dec 2013
Location: Baton Rouge, LA
Posts: 1,055
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I keep a quart kit in the freezer and thaw it out for use. Mix it on cheap throwaway dollar store cutting board plastic with a bondo squeegee. I?ll have new stuff for tanks but for everything else this works great.
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Ser 104142, RV-14A flying - N1463 
Ser 83825, RV-8 building - N8638? 
USN Ret, Urologist, AME, Repeat Offender
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11-28-2019, 11:36 AM
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Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
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I have been using hotel type card keys for years to spread epoxy, bondo, and pro seal. They work great.
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rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
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11-28-2019, 03:50 PM
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Join Date: Sep 2018
Location: NSW, Australia
Posts: 156
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I think you're right
Quote:
Originally Posted by rvbuilder2002
I am pretty sure the VHB tape has never been approved for installing the foam
ribs.
I would strongly recommend against it.
I wouldn't recommend using silicone adheasive either.
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Looking back through the plans & store info on the VHB tape it isn't mentioned specifically for the trim tab ribs, just as a substitute for pro-seal on the rudder or elevator trailing edges. I must've just assumed at the time it would be OK. As it is I was going to do another trim tab (mainly because I wasn't 100% happy with the trailing edge), and as I'm in the middle of building tanks I've got pro-seal everywhere so a little more won't hurt.
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RV-9, Tail Feathers done, Wings almost done.
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