ColinPybus Posted September 28, 2023 Report Share Posted September 28, 2023 Hello all, Do I need a chain tensioner if I'm just green laning my 250MAR? TIA Quote Link to comment Share on other sites More sharing options...
woody Posted September 28, 2023 Report Share Posted September 28, 2023 The tensioner helps smooth power delivery to the back wheel at slow speed in trials competition. For green laning you wouldn't notice not having a tensioner Quote Link to comment Share on other sites More sharing options...
ColinPybus Posted September 29, 2023 Author Report Share Posted September 29, 2023 Thanks Woody. Quote Link to comment Share on other sites More sharing options...
djr Posted October 1, 2023 Report Share Posted October 1, 2023 You can do with out if you like, and I can see why you would want to with the crappy original combined rear brake shaft & tensioner shaft. I have fitted a seperate tensioner to the swinging arm and a guide wheel below the swinging arm pivot, which works better than the original, where tension ranges from too tight when the rear brake is being used, to too loose when the brake is not being used. Have not had the chain come off since changing from the original set up ( which usually happened only at the most dangerous time - like when you were close to the top of a steep climb) Quote Link to comment Share on other sites More sharing options...
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