(front) drive sprocket removal

cdoug50 · #1 07-04-2008, 07:47 PM

Hey Guys,
I would like to remove the small drive sprocket and place a washer behind it. Is this possible and if so, what is holding the sprocket on other than the visible nut? My chain is barely rubbing the tire as it comes off the bottom of the front sprocket.

By the way, I have gained alot of info from this forum and really appreciate all the post. Latest idea I got from the postings was to use a skate board wheel as a chain tensioner. I tried it and it works great. I used the original tensioner mount and just replaced the original roller assembly with a 5/16 bolt some spacers and the skate board wheel. It did take a little time to make sure it tracked right both forward and back. Adjustment was all in the vertical position of the mount which determines level of the wheel.

Now if I can just get that spacer behind the sprocket I will be a happy biker.

Bikeguy Joe · #2 07-05-2008, 07:05 AM

Did you get the "mystery tool" that comes with most kits? That's the sprocket puller.

hellbilly · #3 07-05-2008, 11:15 AM

Some other options for you might be to slightly dish the rim so the tire is moved slightly more to the peddle side, or add additional spacers on the big sprocket to move it out a little. Just something to consider. Good luck!!

cdoug50 · #4 07-05-2008, 01:33 PM

Thanks guys!
I did get the mystery tool and did not know what it was for but will certainly try it out!

Re shimming with the big sprocket, I have already turned the big sprocket around to provide extra clearance there and think problem now lies with front sprocket since top of chain as it comes off the big sprocket clears tire, but the bottom rubs as it comes off of the small sprocket. Wheel has been alighned and balanced and spins true. Thanks Again!

masterx1234 · #5 06-10-2009, 04:18 PM

does anyone know where i can buy an engine sprocket??

MyrmidonJuan · #6 06-10-2009, 04:44 PM

Does anyone know about filing the teeth down on the drive sprocket?

Junster · #7 06-10-2009, 06:59 PM

You can get engine sprockets from bicycle engine kit, bike engine, bicycle engine, bicycle motor it's on parts page 2. MyrmidonJuan I answered your other post about filing.