Weebs Posted October 27, 2011 Report Share Posted October 27, 2011 Hi, I just bought my first trials bike off eBay. It was originally a Diamondback Tekiya but everything apart from the frame has been changed for custom parts. The guy converted it to single speed himself and everything looked fine. The one thing that sometimes happens is when a lot of pressure is applied to the cranks it makes a loud clunk and the pedals skip forward. Any ideas as to what it could be? Thanks Quote Link to comment Share on other sites More sharing options...
krazykid009 Posted October 27, 2011 Report Share Posted October 27, 2011 Hi, I just bought my first trials bike off eBay. It was originally a Diamondback Tekiya but everything apart from the frame has been changed for custom parts. The guy converted it to single speed himself and everything looked fine. The one thing that sometimes happens is when a lot of pressure is applied to the cranks it makes a loud clunk and the pedals skip forward. Any ideas as to what it could be? Thanks The hub is skipping. What hub is it? Probably means the hub isn't up to trials use. James Quote Link to comment Share on other sites More sharing options...
Weebs Posted October 27, 2011 Author Report Share Posted October 27, 2011 The hub is skipping. What hub is it? Probably means the hub isn't up to trials use. James It's a Mission hub. Surely that's not the problem? I noticed just now that the chain tensioner is pretty loose. I can pinch the chain together with two fingers... Could it be the chain skipping? Quote Link to comment Share on other sites More sharing options...
krazykid009 Posted October 27, 2011 Report Share Posted October 27, 2011 Try tightening it up, doesn't cost anything and it will rule that out, or solve it! Mission hubs tend to be unbranded ones, and thus unreliable James Quote Link to comment Share on other sites More sharing options...
JD™ Posted October 27, 2011 Report Share Posted October 27, 2011 Your best bet is to chuck up some pics of your setup, and we'll be able to help more Quote Link to comment Share on other sites More sharing options...
krazykid009 Posted October 27, 2011 Report Share Posted October 27, 2011 Your best bet is to chuck up some pics of your setup, and we'll be able to help more Second that ^ James Quote Link to comment Share on other sites More sharing options...
Weebs Posted October 27, 2011 Author Report Share Posted October 27, 2011 The second one's just to show how loose it is. Quote Link to comment Share on other sites More sharing options...
JD™ Posted October 27, 2011 Report Share Posted October 27, 2011 Wouldn't worry about how loose it is, because that's only when you're squeezing the tensioner. Things I'd check are chain line (i.e. is the chain leaving the sprockets at the right angle?) and for any bends in the sprockets themselves. Yes, the hub is most likely wank, but it should still be usable for a beginner... Quote Link to comment Share on other sites More sharing options...
krazykid009 Posted October 27, 2011 Report Share Posted October 27, 2011 Tensioners fine.... As above check chainline and teeth. Odds are the hub is not up to the job though. James Quote Link to comment Share on other sites More sharing options...
Weebs Posted October 27, 2011 Author Report Share Posted October 27, 2011 Ok thanks for your help. I'm going riding with my friend tomorrow so I'll check it over then. Quote Link to comment Share on other sites More sharing options...
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