Chain Rubs Frame

burnclouds · #1 07-20-2009, 01:38 PM

Hey, So my chain rubs the frame of the bike. I'm not sure what I can do to fix it. I've ridden it a little bit. The frame is slowly being ground away and the chain is too. Any suggestions?

freewheeling frank · #2 07-20-2009, 02:29 PM

can you send a pic so we can take a look?

Cabinfever1977 · #3 07-20-2009, 04:07 PM

you didnt say what part of your frame.

FileStyle · #4 07-20-2009, 05:03 PM

probably upper chain stay

FileStyle · #5 07-20-2009, 05:04 PM

try and move rear sprocket closer to hub!

burnclouds · #6 07-20-2009, 05:16 PM

Sorry I'll send a pic as soon as I can.

The upper section of the chain is rubbing against the inside of the rear fork about 1/2 way up to where all three tubes meet.

I have a "80cc" BGF (Left side drive)

Also the sprocket is as far to the inside as I can get it.

**Dave31** · #7 07-21-2009, 07:59 AM

http://motorbicycling.com/f34/chain-...stay-3311.html

Hope this helps

**Bikeguy Joe** · #8 07-21-2009, 08:13 AM

Whatever you do to fix it, keep the run of the chain straight. Do not resort to moving the sprocket to one side and having the chain run crooked so it clears the frame!

burnclouds · #9 07-21-2009, 11:42 AM

After looking at the bike and the problem a little more, I think i am going to try some washers to spread out the frame a little bit.

Venice Motor Bikes · #10 07-22-2009, 10:12 AM

A possible solution came to me in the middle of the night...
Is it possible to lower your engine & remount it closer to the pedals???
You can do this by cutting a little off the rear engine mount on the back-flat side!!
Just make sure the engine wont touch the pedaling sprocket.