**important Questions**

bowlersp · #1 07-30-2008, 07:29 AM

So, i have been riding my motor bike to work monday and tuesday. but on the way home on yesterday the chain slipped of the pulley system and pulled the pulley lever and chain into the spokes of my back wheel and doing so broke 3 spokes, which destroyed the back wheel by bending the crap out of it.

now, the chain was a little loose, which may have caused this to happen. i fixed the problem by getting a different back wheel that i had from another bike that i had.

my question to you guys is do they make a better pulley's than the one i got with my thatsdax engine kit? maybe one that is made out of some kind of metal and that has higher sidings to prevent the chain from slipping off?

thanks for your help!!

**Bikeguy Joe** · #2 07-30-2008, 07:47 AM

The reason the chain falls off can be several reasons- One the chain is too tight, pulling the tensioner over sideways. Also, improper chain alignment will not help.

You can drill a small hole through the tensioner and chainstay and put a small sheet metal screw through it.

The Dax tensioner with the bearing in it is a pretty good one, once set up properly.

Pablo · #3 07-30-2008, 07:58 AM

There are ways to get rid of that evil chain and tensioner altogether. How many broken engine/bike/spokes/wheel stories are out there due to the lousy stretch-o-matic chain and plastic tensioner? OK I sound like a commercial but this was my driving force for MONTHS......sorry. Check it out, lose the chain, gain the gears.

bowlersp · #4 07-30-2008, 09:45 AM

Quote:

Originally Posted by Bikeguy Joe

The reason the chain falls off can be several reasons- One the chain is too tight, pulling the tensioner over sideways. Also, improper chain alignment will not help.

You can drill a small hole through the tensioner and chainstay and put a small sheet metal screw through it.

The Dax tensioner with the bearing in it is a pretty good one, once set up properly.

got any pictures of these suggestions? i'm not good with mechanical terms. i'm more of a picture guy. thanks for your help!!

jasonh · #5 07-30-2008, 10:52 AM

The chainstay is the bar the tensioner is mounted to. Basically drill a hole through the bracket and into that bar and put a screw in there. That should keep it from rotating on the bar.

You could also try something like this:

http://motorbicycling.com/f30/motori...oner-1128.html

Or if you've got the money, go with Pablo's kit and you'll get rid of the tensioner, the extra sprocket, and the stretchy chain.

bowlersp · #6 07-30-2008, 12:21 PM

ahhh, i see what you mean. drill a hole through the the tensioner that has the two bolts tightened around it to keep it from falling off the bike frame and then put a bolt through it to keep it from moving. would you drill the hole through it while it is installed on the bike or take the pieces off the bike?

also, i saw on the daxs webpage that they have a stronger pulley. would you recommend it or a different pulley? can i pick up just any pulley like at lowes or home depot? thanks for your help.

jasonh · #7 07-30-2008, 12:46 PM

you don't want to drill all the way through the chainstay. Just one side of the tube, and use a sheetmetal screw. I would just do it on the bike so everything lines up.

For a new one, I've heard nothing but good things about the spring-loaded TSC one I linked to.

**Dave31** · #8 07-30-2008, 04:18 PM

I've been using the stock tensioner and roller for 5 years and over 4,000 miles?? I have had no problems what so ever. I do have a roller off a MC chain roller for one the times comes but that day has not come yet.

Pic from Norm

bowlersp · #9 07-30-2008, 04:43 PM

so you drilled two holes in the tensioner, indicated by the red circles. i just would like a pulley that has bigger sides so i know for sure that the chain won't slip off. anybody know where to buy some?

**Dave31** · #10 07-30-2008, 04:56 PM

Quote:

Originally Posted by bowlersp

so you drilled two holes in the tensioner, indicated by the red circles. i just would like a pulley that has bigger sides so i know for sure that the chain won't slip off. anybody know where to buy some?

I only have one sheet metal screw in mine....the pic above is Norman's and he used a bolt and a screw.

I have not changed it yet but I did make one out of a MC chain roller and took the bench grinder so the chain would sit in better. So far my stock is working fine but I always make extra parts so when I need them.