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10-07-2016, 04:13 AM
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Join Date: Jan 2008
Location: Sydney, Australia
Posts: 30
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Hinge adhesive
I'm looking at using Sikaflex 292 under hinges before riveting to fibreglass in lieu of tank sealant. It would be for hinges on my gear leg fairings, cowls and wing tips.
Have any of you had experience with this marine adhesive?
Thanks,
Cam
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Cameron McCarthy
RV-7 wings and tail finished.
Fuselage progressing - slowly....
VH-XKO
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10-07-2016, 06:40 AM
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Join Date: Jan 2005
Location: NC25
Posts: 3,502
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Quote:
Originally Posted by Cam7nut
I'm looking at using Sikaflex 292 under hinges before riveting to fibreglass in lieu of tank sealant. It would be for hinges on my gear leg fairings, cowls and wing tips.
Have any of you had experience with this marine adhesive?
Thanks,
Cam
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When I installed the hinges to the cowl of my RV-6 over 20-years ago and 3,200 flying hours ago, I used epoxy and very thin layer of glass mat between the hinge and the glass.
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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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10-07-2016, 09:22 AM
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Join Date: Jan 2005
Location: Yorkshire, England
Posts: 2,048
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West with a bit of flox is fine - rough it up well.
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"I add a little excitement, a little spice to your lives, and all you do is complain!" - Q
Donated in 2020 
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10-07-2016, 09:42 AM
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Join Date: Jun 2016
Location: McKinney, TX
Posts: 22
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West Systems makes a product called "G-Flex". This is what I used on all my hinges.
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10-07-2016, 12:17 PM
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Join Date: May 2007
Location: Rosharon, TX
Posts: 110
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3m 5200. Available at Orange Aircraft Supply.
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Nick "Rehab" Nafsinger
91TS Rosharon, TX
RV-4 Bought 2019
RV-10 Built 2010, Sold 2019
RV-8 SB, "Fuse in progress"
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10-07-2016, 12:33 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by mike newall
West with a bit of flox is fine - rough it up well.
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And drill extra holes in between the rivet holes to let the epoxy flox mixture squeeze out a bit. I put a bit of a countersink on both sides of these extra holes to give the epoxy something to grip on.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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10-07-2016, 12:59 PM
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Join Date: Jan 2008
Location: Sydney, Australia
Posts: 30
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Thanks for the replies. Think I'll check with my local West Systems supplier for availability of G-Flex.
Cheers.
__________________
Cameron McCarthy
RV-7 wings and tail finished.
Fuselage progressing - slowly....
VH-XKO
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10-07-2016, 03:12 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,027
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An alternate viewpoint.....
Bonding hinges to the older cowl when it was made from wet lay-up polyester resin was the recommended standard.
With the newer prepreg. epoxy cowl, the material is much harder / stiffer and holds up very well just riveting with AD rivets. Any failures in the hinge are rarely related to the attachmetn of the hinge to the cowl. It is usually a failure of the hinge loop.
Bonded or not, will not make any difference on whether that occurs, but if the hinge is bonded, replacing it is much more difficult.
None of Van's prototypes have the hinges bonded on.
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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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10-07-2016, 04:08 PM
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Join Date: Jan 2014
Location: Hobbs, NM
Posts: 239
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I'm using Skybolts but used Proseal and it's a very good bond.
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Ben
RV-7A Tip Up Airworthy on 12/20/2016
RV-10 Emp 95% complete - sold
RV-14A Empennage Done waiting on front fuse kit to show up.
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10-07-2016, 04:28 PM
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Join Date: Mar 2014
Location: San Marcos, CA
Posts: 415
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Quote:
Originally Posted by rvbuilder2002
Bonding hinges to the older cowl when it was made from wet lay-up polyester resin was the recommended standard.
With the newer prepreg. epoxy cowl, the material is much harder / stiffer and holds up very well just riveting with AD rivets. Any failures in the hinge are rarely related to the attachmetn of the hinge to the cowl. It is usually a failure of the hinge loop.
Bonded or not, will not make any difference on whether that occurs, but if the hinge is bonded, replacing it is much more difficult.
None of Van's prototypes have the hinges bonded on.
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Wow, I love the counter perspectives on this site. I came to this thread to find the best way to bond hinges, and am leaving with this insight which I intend to listen to. Because I am the guy that would need to redo them later.
I offer a sincere thank you!
__________________
~Chuck
DG-800S Sailplane
QB RV-8 -- Working on final wiring and the engine
84CX Reserved
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