EDiT Nearly forgot, i wanted to ask if you think a belt could replace the #25 chain on my bike? I think the lil #25 looks too whimpy compared to the rest of the components...thoughts?
Cheers Todd, actually heading to Danny's for dinner tonight so will talk to him about it then.Thud wrote:RE Belt drive.
It will work & there isn't a huge reduction IIRC, Your running (17-32)???
The only issue will be bordering the torque limits on the belts...wider will fix that though.
Belt wrap is the key to good performance. I would start with a 21-40 or better yet a 23-44 at least 15mm wide...20mm if you can find it.
Danny M. Is better versed in the math on the drive belt application. Lets have him chime in on it.
hahaha sorry mate, my 115kg rider+bike comment is a bit ambiguous, that is total weight not just me hahahha, but I dont think I am alone when you get that feeling that you might be pushing mtb gear just a bit too hard. Its by no means a contest its just an observation, by all means go out and jump something huge on your weapon toolman I would love to see more of it, or anyone else for that matter. I am just here to have fun.toolman2 wrote:'fat man jumps mountain bike'
Yeah its pretty neat if your not too fussed about the absolute best quality video....BloTube fucks theWillow wrote:...might have to get one of those myself. for $48 can't go wrong.
Make your first video something along the lines of this - http://vimeo.com/68761077 but with bikes.
I am using the old trapezoid profile because it is waaay cheaper and a more forgiving profile for casting my rear sprocket.Thud wrote:Danny M. Is better versed in the math on the drive belt application. Lets have him chime in on it.
Cheers for that Danny...unfortunately the freewheell i grabbed off you is EXACLY the same asDanny Mayes wrote:I am using the old trapezoid profile because it is waaay cheaper and a more forgiving profile for casting my rear sprocket.Thud wrote:Danny M. Is better versed in the math on the drive belt application. Lets have him chime in on it.
For high powered primary reductions I think Matt is the authority here.
If you want to go with the trapezoid profile i an run some calcs and make a recommendation... Upsettingly Inventor doesn't have newer profiles for playing with At best i think it has HTD which are better suited to higher speed but i havent looked into what they cost...
This is where i got my T10 pulleys from http://shop.polybelt.com/Metric-Pitch-Pulleys_c68.htm
Yeah I like the half link chains, very little stretch I always use chain breaker to join chains....Tinto wrote:Kim, how do you find the half link chain for retaining tension? Reliable, stretchy, noisy?
What is the method for joining / breaking those - standard pins or something else?
I'm using 9 speed chains at the moment but its a royal pain in the ass to get consistent tension, even with a basic tensioner on the rear.
I feel like I'm a few mm out from having perfect tension which has lead me to look at a half link BMX chain.
They seem to have massive load capacities compared to 9 speed chains.