ADVrider

ADVrider (http://www.advrider.com/forums/index.php)
-   Airheads (http://www.advrider.com/forums/forumdisplay.php?f=85)
-   -   How to seal threads on emblem screws (http://www.advrider.com/forums/showthread.php?t=864260)

rbm 02-18-2013 07:09 PM

How to seal threads on emblem screws
 
Hi,

I'm going to be modifying my BMW K75 tank to accept /5 tank emblems using screws rather than adhesive. This means drilling and tapping the aluminum. Will I need to use a sealant (such as Locktite 242 or RTV) to seal the threads when installing the badges, so that there is no possibility of fuel leakage later? Or is the rubber gasket between the badge and tank sufficient to stop leakage?

I had also contemplated using slightly longer screws with flanged nuts on the inside of the tank. Bad idea?

BTW, posting in this forum since it's more likely to have someone in the know read this than in another forum, like Road Warriors.

crazydrummerdude 02-18-2013 08:04 PM

I have a hard time believing that this idea won't leak regardless of the sealant.

bmweuro 02-19-2013 12:34 AM

Weld in an aluminum nutsert. You could also cut the heads off of the screws, JB Weld them in place and use 3M double sided tape to hold the emblems on.

bikerfish 02-19-2013 04:03 AM

I second the "fake screw" idea. just glue the heads onto the emblems and use the tape to hold the emblem on, nobody gonna know!

Airhead Wrangler 02-19-2013 05:45 AM

I wouldn't penetrate the wall of the tank if I were you. That seems like a losing proposition no matter how you seal it up again. I'd have someone weld or braze a blind threaded insert into the wall of the tank and screw them into that.

EDIT: Considering the difficulty involved in doing the above, the 'fake screw' and adhesive method mentioned earlier is what I would do.

Bill Harris 02-19-2013 06:25 AM

Quote:

Originally Posted by AW
I'd have someone weld or braze a blind threaded insert into the wall of the tank.

That is how the /5 (and earlier) tanks do it.

Quote:

Originally Posted by Euro
cut the heads off of the screws, JB Weld them in place and use 3M double sided tape to hold the emblems on

That is how I would do it.

--Bill

kantuckid 02-19-2013 07:25 AM

Quote:

Originally Posted by bikerfish (Post 20758973)
I second the "fake screw" idea. just glue the heads onto the emblems and use the tape to hold the emblem on, nobody gonna know!

plus 1,000,000+!!!!!

Kai Ju 02-19-2013 08:05 AM

Most folks here try and seal old tanks that have holes in them, here you want to go and make holes.............

Fake the screws, nobody will know, whereas if you drill the tank and it leaks it will show :D

rbm 02-19-2013 06:53 PM

Well, good I asked. I got consensus on faking the screws and using double-sided tape so that's the way I'll tackle this modification. Thanks to everyone who responded.

bmwhacker 02-19-2013 06:54 PM

Go ahead admit it...you want a /5:lol3

wmax351 02-19-2013 10:36 PM

If I recall, the K bikes have a double wall tanks. In any case, cut off the heads, and glue it on.

bmweuro 02-20-2013 11:57 AM

Quote:

Originally Posted by wmax351 (Post 20766758)
If I recall, the K bikes have a double wall tanks. In any case, cut off the heads, and glue it on.

Nope on the double walls.

wmax351 02-21-2013 12:16 AM

Quote:

Originally Posted by bmweuro (Post 20770629)
Nope on the double walls.

Good to know. I have a little dent from someone's handlebar I need to pop out.

rbm 02-21-2013 05:09 PM

Quote:

Originally Posted by bmwhacker (Post 20765410)
Go ahead admit it...you want a /5:lol3

Ya. Wouldn't mine in the least!!:ricky


Times are GMT -7.   It's 12:30 AM.

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