nish/dabomb Posted June 8, 2013 Report Share Posted June 8, 2013 I have a da bomb pro and after replacing the cranks with shimano deore hallow tech and front and back brake boosts it spilt and free wheel clean in half and replace it with a tensile ff and blow it up in 2 rides and got it replaced on warranty and 3 rides later the second one the end cap is unscrewing :(anyone else have This problem and is it worth spending 90 pound on a white Industry one? Quote Link to comment Share on other sites More sharing options...
thinkdougie Posted June 8, 2013 Report Share Posted June 8, 2013 Most people run Echo SL's on here. Personally i think they are the best. I have one for sale if your interested. Quote Link to comment Share on other sites More sharing options...
bing Posted June 8, 2013 Report Share Posted June 8, 2013 It's cos you are running it on the back, the lockring will unwind itself over time. Its self tightening when you put it on the crank, that's why you keep blowing them up. Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted June 8, 2013 Report Share Posted June 8, 2013 Bit of loctite or get someone to tack weld the locking to the inner ( done this myself for my dirt jumper ) Quote Link to comment Share on other sites More sharing options...
Muel Posted June 8, 2013 Report Share Posted June 8, 2013 It's cos you are running it on the back, the lockring will unwind itself over time. Its self tightening when you put it on the crank, that's why you keep blowing them up.Errrrrmmm, not quite convinced about that... See a freewheel locks one way and doesn't the other way, even if you put it up your bottom. The lockring unscrews in the same direction wherever it lives. Quote Link to comment Share on other sites More sharing options...
bing Posted June 8, 2013 Report Share Posted June 8, 2013 (edited) Put a tensile on the back. I guarantee, unless the ring is welded on, it will undo itself. This has happened to me in my early days, think about the turning forces. On the rear, its the whole inner hub that is turning, naturally causing the threads to unwind. On the front, its the cranks that turn the inner part against the lockring. Imagine if you will, hold the lockring in your left hand, and the crank with the freewheel inner in your right hand. Then turn the crank in a forward direction and it will tighten into the lockring. Now put the ring in your right hand and put the freewheel inner in your left, and turn the inner in a forward direction. You will see the lockring wants to naturally unwind. That's why it won't work over a long period of time. I know it seems far fetched but it doesn't take much to undo one, the aren't many threads on them Edited June 8, 2013 by bing Quote Link to comment Share on other sites More sharing options...
CC12345678910 Posted June 10, 2013 Report Share Posted June 10, 2013 the man's right. Believe. Quote Link to comment Share on other sites More sharing options...
marko Posted June 10, 2013 Report Share Posted June 10, 2013 (edited) The lockring loosening/unscrewing is not from pawls/gear drag. Its from the chain pull forces. Freewheels on the cranks mount from the left and the chain pull force runs around the freewheel clockwise (view towards the lockring). That needs right hand threads to avoid loosening. On the rear wheel they mount from right and the chain pull force runs around the fw counter-clockwise (view towards the lockring). Need a left-hand threaded lockring like white ind. Edited June 10, 2013 by marko Quote Link to comment Share on other sites More sharing options...
marko Posted June 10, 2013 Report Share Posted June 10, 2013 (edited) http://en.m.wikipedia.org/wiki/Precession_(mechanical) -> examples -> bike pedals Edited June 10, 2013 by marko Quote Link to comment Share on other sites More sharing options...
nish/dabomb Posted June 11, 2013 Author Report Share Posted June 11, 2013 Thanks guys I am going to get the echo sl 108 Quote Link to comment Share on other sites More sharing options...
customrider-Rhys Posted June 11, 2013 Report Share Posted June 11, 2013 which will do the same thing.. Quote Link to comment Share on other sites More sharing options...
dann2707 Posted June 11, 2013 Report Share Posted June 11, 2013 SL's lockring is on the opposite side to tensile so it shouldn't? Quote Link to comment Share on other sites More sharing options...
marko Posted June 11, 2013 Report Share Posted June 11, 2013 Exactly Quote Link to comment Share on other sites More sharing options...
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