delusional Posted March 7, 2005 Report Share Posted March 7, 2005 I know this isn't strictly a trials question, but it is general push bike tech. If it really hurts you to answer a non-trials specific question you can always pretend for a minute I'm running a 21 speed trials bike :) Title should be fairly descriptive, but I've just bought a Deore crankset for my mtb that is apparantly 9 speed specific and I'm still running a 7 speed rear cassette. I definitely need a new chain, however what I'm not sure on is what chain would be best to get. Is a 9 speed chain going to run smoother on a 7 speed cassette, or is an 7/8 speed chain going to run smoother on a 9 speed crankset? Obviously the ideal solution would be to upgrade to a 9 speed cassette, but I'd rather avoid that if possible as it'd mean extra expense on new shifters (I've only just bought a new set of 7 speed shifters) and it's not like I really feel the need for more than 21 gears at the moment. Quote Link to comment Share on other sites More sharing options...
Tartridge Posted March 7, 2005 Report Share Posted March 7, 2005 I definitely need a new chain, however what I'm not sure on is what chain would be best to get. Is a 9 speed chain going to run smoother on a 7 speed cassette, or is an 7/8 speed chain going to run smoother on a 9 speed crankset? ← 7/8 speed - a 9 speed chain is too thin :lol: Well, thats a lie really, haha, it'll work... just... maybe. 7/8 speed is your best bet basically, and will be cheaper too. The 7/8 speed chain will work fine with your chainset as well :lol: Quote Link to comment Share on other sites More sharing options...
dave85 Posted March 7, 2005 Report Share Posted March 7, 2005 9 speed chains will run with great difficulty (or not at all) on a 7 speed cassette, but a 7 speed chain will run on a 9speed chainset with just a bit of side play :lol: Quote Link to comment Share on other sites More sharing options...
Brisa Posted March 7, 2005 Report Share Posted March 7, 2005 The 9 speed chain will only really matter if you have a 9 speed rear casette... Front cogs shouldn't really make a difference... Think thats what you meant, am I right? Quote Link to comment Share on other sites More sharing options...
delusional Posted March 7, 2005 Author Report Share Posted March 7, 2005 Brilliant, thanks very much guys. That's all what I was hoping to hear :) Just got put off by seeing all these product descriptions listing cranksets as "9 speed specific". Quote Link to comment Share on other sites More sharing options...
Tartridge Posted March 7, 2005 Report Share Posted March 7, 2005 Just got put off by seeing all these product descriptions listing cranksets as "9 speed specific". ← Yeah, load of arse... good for trying to get people to shell out lots of ££ for whole new 9 speed drivetrain though! Quote Link to comment Share on other sites More sharing options...
Lukeee Posted March 7, 2005 Report Share Posted March 7, 2005 7/8 speed - a 9 speed chain is too thin :lol: Well, thats a lie really, haha, it'll work... just... maybe. 7/8 speed is your best bet basically, and will be cheaper too. The 7/8 speed chain will work fine with your chainset as well :lol: ← Why wouldn't a 9 speed chain run on a 7 Speed Rear cassette then? Quote Link to comment Share on other sites More sharing options...
Tartridge Posted March 7, 2005 Report Share Posted March 7, 2005 I've seen them bind before, may have just been a case of old worn cassette though. Fitted a PC48 and it was fine. Either way, 7/8 speed chain is the best bet here... unless you've got something remarkable we need to know, hehe? Quote Link to comment Share on other sites More sharing options...
Lukeee Posted March 7, 2005 Report Share Posted March 7, 2005 I've seen them bind before, may have just been a case of old worn cassette though. Fitted a PC48 and it was fine. Either way, 7/8 speed chain is the best bet here... unless you've got something remarkable we need to know, hehe? ← Really? In this case i agree that a 7/8speed chain would be better but there shouln't be any reason that they should be incompatible i mean the only difference is a 9speed chain is thinner? Quote Link to comment Share on other sites More sharing options...
Tartridge Posted March 7, 2005 Report Share Posted March 7, 2005 In this case i agree that a 7/8speed chain would be better but there shouln't be any reason that they should be incompatible i mean the only difference is a 9speed chain is thinner? ← Exactly my thoughts. The occasion i mention above, the cassette did look relatively worn, to the point where the teeth had burred and effectively become wider. It was the same sort of 'sticking' you get with a Shimano DX sprocket and a 9 speed chain. Quote Link to comment Share on other sites More sharing options...
Lukeee Posted March 7, 2005 Report Share Posted March 7, 2005 Exactly my thoughts. The occasion i mention above, the cassette did look relatively worn, to the point where the teeth had burred and effectively become wider. It was the same sort of 'sticking' you get with a Shimano DX sprocket and a 9 speed chain. ← Ah ha. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.