Background: My new-to-me 630 has a 14 tooth counter shaft sprocket and a 41 tooth rear sprocket. I counted the pins on the chain twice, 112 and 113 pins so it's probably 112. The bike is fitted with a BRP chain guide. Questions: 1. Will a 45 tooth sprocket fit with out changing the chain? The existing sprockets and chain look like they're in excellent condition. 2. The chain adjustment bolts start to bind, on both sides, when screwing the bolts into the swing arm more than about half way, is this normal? Thanks for your assistance!
No you will need a new chain with more links.... When I changed out my rear sprocket to a 43 tooth Superprox, I also bought a 120 link gold chain and took off what I did not need..... Best of luck hope u enjoy ur husky as much as I have mine!!!
14/45 will fit if the chain is stock length. You can check if there is enough slack in the chain by: 1) Measure the length if two chain links and compare it to the length of chain adjuster used. 2) Loosen up axle and chain adjusters. Pinch four links together. If there is still sufficient chain slack with links pinched, then the 45 will fit.
1. Yes it will fit. I run 15/45 with stock chain length. 2. No not normal. Get some penetrating oil, spray it heavy and let it soak. Then carefully work the bolts all the way in and back out a few times. Then remove the bolts and apply anti seize compound and they should thread in by hand now. I bottom out these bolts by hand at every tire change to keep them free. If they can't go in by hand then I repeat the above process. _
Success! I worked the adjusters like SilverBullet suggested and got them to turn freely the full length. With the adjusters working, I checked the chain slack as suggested by willie and it looked like there was enough chain slack for the 45T sprocket. I removed the 41T and installed the 45T sprocket. All is good! Thanks for your feedback and suggestions!
