tony27 Posted November 21, 2016 Report Share Posted November 21, 2016 If the tensioners purpose is to to allow enough chain slack for use with long travel suspension, why aren't they fitted to MX and enduro bikes? Because they use a different style, the chain guided onto the sprocket with a bulky guide that would be forever smashing into things on a trials bike A trials bikes tensioner is generally fairly close to the pivot of the swingarm which offers a degree of protection to it. The difference in length of swingarms may also play a part Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted November 21, 2016 Report Share Posted November 21, 2016 location of gearbox sprocket seems different? Quote Link to comment Share on other sites More sharing options...
zippy Posted November 21, 2016 Report Share Posted November 21, 2016 (edited) I think the tensioner has a slider block because in a pinch I can make one out of Teflon. (I used a router for the machining, I a little bit redneck) Pieces Finished block Edited November 21, 2016 by zippy 4 Quote Link to comment Share on other sites More sharing options...
feetupfun Posted November 21, 2016 Report Share Posted November 21, 2016 A router is flash. I use a hacksaw 3 Quote Link to comment Share on other sites More sharing options...
b40rt Posted November 21, 2016 Report Share Posted November 21, 2016 A hacksaw is just showing off, I just use my teeth. 4 Quote Link to comment Share on other sites More sharing options...
jonnyc21 Posted November 21, 2016 Report Share Posted November 21, 2016 (edited) Most MX and Enduro bikes don't get hurtled into the air at rocks and boulders with faster suspension compression and rebound settings... I could guess this typical trials type riding might have some connection to lack of tensioner? I don't claim the above is correct but might be a contributing factor? Edited November 21, 2016 by jonnyc21 Quote Link to comment Share on other sites More sharing options...
sirdabalot Posted November 21, 2016 Report Share Posted November 21, 2016 Ta for your views and info about guide/tensioner arrangements on the trials/mx bikes. Quote Link to comment Share on other sites More sharing options...
still trying Posted December 6, 2016 Report Share Posted December 6, 2016 It may be because the slide type is more compact, (look at how far a roller hangs below the chain) and lighter. Also no moving parts means less maintenance. Cheaper to make.and lighter,(weight being very important in this sport). Quote Link to comment Share on other sites More sharing options...
laird387 Posted December 7, 2016 Report Share Posted December 7, 2016 Look also at the type of ground the different types of machine are being used on - could be a jungle of vegetation or loose rocks in a trial, much more likely to be an open track for motocross.......... Quote Link to comment Share on other sites More sharing options...
zippy Posted December 7, 2016 Report Share Posted December 7, 2016 It may be because the slide type is more compact, (look at how far a roller hangs below the chain) and lighter. Also no moving parts means less maintenance. Cheaper to make.and lighter,(weight being very important in this sport). Cheaper being very importanter in this sport............ 1 Quote Link to comment Share on other sites More sharing options...
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