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spar bumper

Discussion for Waiex builders on specific plans page experience. These posts are limited to technical suggestions such as assembly order, challenges, or techniques related to specific plans pages.
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spar bumper

Postby wingnut99 » Tue Sep 22, 2020 7:39 pm

I have a 1 foot X 1" strip of rubber or similar that has a sticker that says spar bumper. I didn't see it on the wing rigging page but I have the wings installed with the delrin blocks under the spars on the lower longerons. Someone on FB said they go under the spars during installation but didn't say if they are temporary or permanent. Anybody have the answer?
wingnut99
 
Posts: 99
Joined: Wed Nov 14, 2018 12:32 am
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Re: spar bumper

Postby pfhoeycfi » Wed Sep 23, 2020 5:21 am

The spar bumpers are riveted to the longeron and "remain in place". I confirmed this with the factory in July.
Peter Hoey
SEL Pvt, Comm Glider, CFIG, Pawnee & L19 Towpilot
Philadelphia Glider Council
Sonex B SNB0021, N561PH, Taildragger, Aerovee Turbo, MGL MX1, First flight Dec 18, 2022
Also built Sonerai IIL N86PH
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