zoster Posted February 19, 2009 Report Share Posted February 19, 2009 Hi!i am building a 24" bike with standard 68 bb shell, ffw and fixed mod hub, and i see that the sprocket on the rear wheel (trialtech hub) is pretty much quite on the inner side, i think a perfect chainline would land on the bb shell... what the hell? (for riming sake)do mods usually have suck crooked chainline?? Quote Link to comment Share on other sites More sharing options...
Mark W Posted February 19, 2009 Report Share Posted February 19, 2009 Unfortunately, the majority do. Really wide BB spindles + normal hub spacing = failure. Quote Link to comment Share on other sites More sharing options...
Muel Posted February 19, 2009 Report Share Posted February 19, 2009 You can get sprocket offset spacers. My Dad had one for his fixie a while back, basically it screws onto the thread on the hub, then give another thread for the sprocket. I think it was about 15mm?Best bet is to ask the fixie guys though, or get one made up. Quote Link to comment Share on other sites More sharing options...
ti-mig-guy Posted February 19, 2009 Report Share Posted February 19, 2009 I had to move my BB to the drive side a few threads, but sounds like you have the opposite problem, FFW is to far from the frame?If the chain is new and replaced on the regular, then you may be able to run it a little loose, that may let it function ok, but the slack adds to unsteady track stands and whatnot...Mod bike-modified shit that is not supposed to work ,IMO, but wouldn't go stock for the anything. Quote Link to comment Share on other sites More sharing options...
zoster Posted February 19, 2009 Author Report Share Posted February 19, 2009 (edited) I had to move my BB to the drive side a few threads, but sounds like you have the opposite problem, FFW is to far from the frame?If the chain is new and replaced on the regular, then you may be able to run it a little loose, that may let it function ok, but the slack adds to unsteady track stands and whatnot...Mod bike-modified shit that is not supposed to work ,IMO, but wouldn't go stock for the anything.actually i think the "problem" is at the hub, taht makes the sprocket sit too much on the inside, but i understandi t's usual for mod setups.., i just wish i knew it before ordering the frame geoanyway, i managed to put the cranks on a 118 bb, but only without the alu bashring. i still have a gap that could accomodate a bashring , but a narrower one: custom steel one or i could narrow the alu one , but i'm not sure this would be a good idea.. turns out i have to make the bash thinner with 0.8-1mm, although i'm not sure how i'm gonna do that.. Edited February 19, 2009 by zoster Quote Link to comment Share on other sites More sharing options...
Jack Chinnery Posted February 19, 2009 Report Share Posted February 19, 2009 actually i think the "problem" is at the hub, taht makes the sprocket sit too much on the inside, but i understandi t's usual for mod setups.., i just wish i knew it before ordering the frame geoanyway, i managed to put the cranks on a 118 bb, but only without the alu bashring. i still have a gap that could accomodate a bashring , but a narrower one: custom steel one or i could narrow the alu one , but i'm not sure this would be a good idea.. turns out i have to make the bash thinner with 0.8-1mm, although i'm not sure how i'm gonna do that..Is it me, Or is that freewheel REALLY and I mean really close to the frame So yeah smaller bash or no bash. Quote Link to comment Share on other sites More sharing options...
zoster Posted February 19, 2009 Author Report Share Posted February 19, 2009 i think i found the solution. i'll show you tomorrow. Quote Link to comment Share on other sites More sharing options...
forteh Posted February 20, 2009 Report Share Posted February 20, 2009 Cant help with the chainline but your cat is sexy Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted February 20, 2009 Report Share Posted February 20, 2009 Is it me, Or is that freewheel REALLY and I mean really close to the frame So yeah smaller bash or no bash.he's just said he's fitted a smaller bb, of course its going to get closer to the frame Quote Link to comment Share on other sites More sharing options...
Jack Chinnery Posted February 20, 2009 Report Share Posted February 20, 2009 he's just said he's fitted a smaller bb, of course its going to get closer to the frame It was a joke (the kind of one thats not ment to make you piss yourself). Quote Link to comment Share on other sites More sharing options...
JonMack Posted February 20, 2009 Report Share Posted February 20, 2009 It was a joke (the kind of one thats not ment to make you piss yourself).Just like all your jokes then. Quote Link to comment Share on other sites More sharing options...
Ben John-Hynes Posted February 20, 2009 Report Share Posted February 20, 2009 Just like all your jokes then.Bit easy wasn't it Jon. Even for you... Quote Link to comment Share on other sites More sharing options...
JonMack Posted February 20, 2009 Report Share Posted February 20, 2009 It's too easy sometimes man! Quote Link to comment Share on other sites More sharing options...
zoster Posted February 21, 2009 Author Report Share Posted February 21, 2009 i think i found the solution. i'll show you tomorrow.shaved it down 1 mm or so, and it works ! (118mm bb)chainline is almost perfect..(it would have been perfect if i had a sprocket that has the teeth plane put sideways and not centered) Quote Link to comment Share on other sites More sharing options...
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