ADVrider

ADVrider (http://www.advrider.com/forums/index.php)
-   Airheads (http://www.advrider.com/forums/forumdisplay.php?f=85)
-   -   One for rt/rs owners (http://www.advrider.com/forums/showthread.php?t=857621)

airhead bob 01-22-2013 05:38 PM

One for rt/rs owners
 
1984 r80rt

the metal threaded insert in one of the main fairing attachment points is missing from my rt
fairing. In particular the one just under the left side of the dashboard.

Has anybody done a repair of one of these attachment points.

The parts fich does'nt show a threaded insert as an replacement part.

Wirespokes 01-22-2013 10:39 PM

It's probably a brass insert that was cast in during the manufacturing process, so of course it wouldn't be something BMW would sell. It's possible a hardware store, Grainger or McMaster Carr would have something similar. Or you might try sourcing one from a junk fairing.

Once you have one in hand, clean the area very well and excavate down to virgin plastic. Epoxy the new one in.

ME 109 01-22-2013 11:20 PM

Maybe try a helicoil, epoxied in place.

georgesgiralt 01-23-2013 05:16 AM

Hello !
If you go to a hardware store, buy an insert with the outer part with ridges. Not purely cylindrical. People making wood cabinets have things like that.
This will help the epoxy glue prevent it turning when inserting the male screw. Have a close look to see if the fairing is not cracked around the insert....
Use a slow curing epoxy and take great care to avoid getting epoxy inside the insert. Do not ask why I tell you this...
Although BMW says their fairing are impossible to repair, I've found that using marine grade glass mat and epoxy make perfect repairs.

TINK 01-23-2013 05:25 AM

Dubro, Hobby Store
 
Go to a hobby store that stocks Dubro products.

Get yourself some of their brass "Threaded Inserts", they come in sizes 4/40 to 1/4-20.

http://shop.dubro.com/k/search?q=Sea...readed+Inserts

http://mediacdn.shopatron.com/media/...jpg?1338842916

PS
Hobby shops also have very high quality slow cure epoxies in smaller quantities than a marine supply or hardware store would stock.

TINK

airhead bob 01-23-2013 04:13 PM

Thank you all for replies and materials recomendations.
those dubro inserts look like a good way to go , the aggressive lugs should hold well in the epoxy.

DaveBall 01-23-2013 06:38 PM

I have had to repair a few of these over the 30+ years of riding RTs. I first used some oddball inserts I picked up somewhere and just epoxied them in. They worked, but eventually failed again. Once I found the Dubro ones, and used epoxy and some marine fiberglass mat, they now seem to last a whole lot longer. On my present bike, I had the fairing off a few years ago and used a little grinder to rough up around each mount and epoxied and glass matted each one. I be they will out last me now.

Humboldt Airhead 02-03-2013 09:24 PM

epoxy
 
My RS fairing has the boss broken off below the cylinder and the other is cracked. Can anyone recomend what epoxy to use to glue the broken one on? I have a marine grade 2 part epoxy but it is a putty type and I was thinking of a more liquid one to penetrate into the cracks then use the one I have to go over the outside of the boss to build it up.
Thanks for any help. :ear

boxerboy81 02-04-2013 05:14 AM

Quote:

Originally Posted by Humboldt Airhead (Post 20645190)
Can anyone recomend what epoxy to use to glue the broken one on? .......
Thanks for any help. :ear

www.westsystem.com/

oldroadie 02-04-2013 05:25 AM

The West System products are very good and I've used their stuff to build a couple of wooden boats. That said, you'll find the epoxy sold at hardware stores, i.e. 5 Ton Epoxy, to be the same and a lot more manageable for small repairs. I'd consider adding some fibre glass cloth to strengthen the repair, too. BTW, it's so much easier to paint on a coat of epoxy and lay the cloth over then saturate...it keeps the cloth or matting from distorting.


Times are GMT -7.   It's 03:56 PM.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014