Sprockets and chains

2strokesteve89

2strokesteve89

TurtleShifter:
Yeah, any sprocket can bend if it gets hit at a bad angle. Like I said, I bent my first one. Haven't bent this one yet though. I've bent a back brake rotor as well.
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I know from riding in the glacier silt in the mud and streams up here it wears my running gear, sprockets included, at a high rate, it tears the shit outa everything. Doesn't matter who's name is on it. However, I've never bent a sprocket. So I wouldn't stress over how strong it is, I'm gonna grind it to pieces before that happens.
 
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TurtleShifter

2strokesteve89:
I know from riding in the glacier silt in the mud and streams up here it wears my running gear, sprockets included, at a high rate, it tears the shit outa everything. Doesn't matter who's name is on it. However, I've never bent a sprocket. So I wouldn't stress over how strong it is, I'm gonna grind it to pieces before that happens.
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Yah, it's never been a concern. I can't even remember how I noticed it was bent. Think it was during a tire change, aligning up the chain..
 
O

ossagp

Well hitting a big rock with it would prove that it won't take everything. Maybe just get solid steel ones. No cutouts what so ever. I think I can still get those and drill them for about 11 dollars each.
 
2strokesteve89

2strokesteve89

ossagp:
I didn't know Rick Bevins still rode. The only other man I know in this part of the world that ran them that long was Marvin Beyers, and he died.
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Truth be told, that was off the bike my girls ride, didn't notice how bad it was till we took it out to Jim's a couple weeks ago, I was impressed.
 
rmboy

rmboy

jojofuller:
I'm sure the answer to this is "it is in the manual"(I'm looking for one.), but none the less...

I have to change the front sprocket and chain on my 2003 Suzuki RM125. My investigation has led me to stock specs on the front as a 12 spoke and the rear as a 49 with a 114 link chain. My bike has an 11 spoke sprocket on it. It also has 3 broken teeth on it. The rear sprocket is a 51. According to a calculator I found online, the current set up produces an approximate 17% torque curve and an opposite -17% top speed difference when compared to the stock set up. I think that this may be the reason for the broken teeth...too much torque. Or could be sloppy chain. (Opinions?)


So I am going to replace with a 12 spoke sprocket and will leave the rear 51. If I install this set up, the calculator indicates I will have an approximate 9.5% torque curve and opposite top speed. The calculator also says I will need a 116 link chain. Does all of that sound right?
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12/50 is by many a magazine the best gearing for that bike. ive tried anywhere from yours to 12.49 ..think 12/51 is perfect...motor rips when healthy anyway!!! but love the pull 12/51 gave me..can wick throttle and its immediate. kid has same bike with vforce and bills pipe....he has no problems same gearing....try it youll like it
 
rmboy

rmboy

jojofuller:
I'm sure the answer to this is "it is in the manual"(I'm looking for one.), but none the less...

I have to change the front sprocket and chain on my 2003 Suzuki RM125. My investigation has led me to stock specs on the front as a 12 spoke and the rear as a 49 with a 114 link chain. My bike has an 11 spoke sprocket on it. It also has 3 broken teeth on it. The rear sprocket is a 51. According to a calculator I found online, the current set up produces an approximate 17% torque curve and an opposite -17% top speed difference when compared to the stock set up. I think that this may be the reason for the broken teeth...too much torque. Or could be sloppy chain. (Opinions?)


So I am going to replace with a 12 spoke sprocket and will leave the rear 51. If I install this set up, the calculator indicates I will have an approximate 9.5% torque curve and opposite top speed. The calculator also says I will need a 116 link chain. Does all of that sound right?
Click to expand...
think i bought a 116 for same bike had to take out one link so technically needed a 115 but 12/51 seems to be perfect gearing for our 2002 and 2003 rm125's
 
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