godzilla Posted September 29, 2010 Report Share Posted September 29, 2010 (edited) Ive had a Renthal R1 in my bike for over a year now and it has had a good bit of work, The thing has hardly stretched but the round edges have got a little flat from wear. I have a new R1 to go on but im not sure if im being tight by not changing it, i use to run Regina chains and they stretched loads so it was pretty easy to see when i needed to bin them by looking at the snail cams. When do you guys change yours? Edited September 29, 2010 by godzilla Quote Link to comment Share on other sites More sharing options...
1oldbanjo Posted September 29, 2010 Report Share Posted September 29, 2010 When a chain is new it fits tightly into the sprocket and transfers the engine power to a large number of teeth on the front and rear sprocket. As the chain stretches (and the sprockets wear), you will have fewer of the chain links transferring power to the teeth. If you grab the chain on the extreme rear of the sprocket and try to pull it away from the sprocket it will be hard to do on a new chain - but very easy on a worn chain. A very worn worn chain will result in only a few of the chain links transferring power - and the chain will begin to wear the sprocket very quickly as a result. I replace the chain when it looks like there is too much slack around the rear sprocket. I also inspect the chain when I have it off the bike for cleaning and look for how much slack there is between links when you lay the chain on a flat surface and push the links together....then pull them apart. Another way to inspect for wear is to see how much curve the chain will allow when you lay the chain flat on the floor and make an arc with the chain left or right - worn links and bushings will allow the chain to bend a considerable amount. My normal maintenance schedule for chains includes frequent cleaning in an ultrasonic cleaner, flipping the front sprocket around on the shaft to allow wear on the other side of the teeth, and flipping the rear sprocket occasionally on bikes that have a rear sprocket that allows mounting on either side. When the chain gets too sloppy I replace it and the countershaft sprocket, and I can usually get a rear sprocket to last through 2 chains and front sprockets. Quote Link to comment Share on other sites More sharing options...
pete_scorpa3 Posted September 29, 2010 Report Share Posted September 29, 2010 A few years back I remember thinking "I'll put the new chain on after the next event." The chain broke, it wrapped around the front sprocket and destroyed the engine. Keeping that chain for one more outing cost me Quote Link to comment Share on other sites More sharing options...
godzilla Posted September 29, 2010 Author Report Share Posted September 29, 2010 A few years back I remember thinking "I'll put the new chain on after the next event." The chain broke, it wrapped around the front sprocket and destroyed the engine. Keeping that chain for one more outing cost me Quote Link to comment Share on other sites More sharing options...
ormplus Posted September 29, 2010 Report Share Posted September 29, 2010 mind fit new sprokets as well, or your defeating the purpose. old sprokets will reak the new chain.mind the chain pad. Quote Link to comment Share on other sites More sharing options...
godzilla Posted September 29, 2010 Author Report Share Posted September 29, 2010 mind fit new sprokets as well, or your defeating the purpose. old sprokets will reak the new chain.mind the chain pad. Its not ready for sprockets yet, there still in very good condition and are not c'd at all, the rear was changed not so long back as it got smashed up and the front was changed as a had a near new one in a draw. Quote Link to comment Share on other sites More sharing options...
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