Miles Mallinson Posted November 20, 2010 Report Share Posted November 20, 2010 I was wondering if it were possible to put a spacer underneath the crown race on my fork to make by bike a bit higher upfront, my current fork is 395mm axle to crown so if i put a 5mm or 10 mm spacer under the crown race it would make the front end higher, I'm not really sure it might weaken the fork. this is my fork. Identiti Quote Link to comment Share on other sites More sharing options...
Rusevelt Posted November 20, 2010 Report Share Posted November 20, 2010 (edited) Strange idea, the traditional practice would be to use stem stackers and increase the ride height. Edited November 20, 2010 by Rusevelt Quote Link to comment Share on other sites More sharing options...
Revolver Posted November 20, 2010 Report Share Posted November 20, 2010 Bad idea, don't do it. Quote Link to comment Share on other sites More sharing options...
Oldskooltrials Posted November 20, 2010 Report Share Posted November 20, 2010 It wont work because the steerer tube has a larger diameter section at the base and this is where the race has to go. Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 20, 2010 Author Report Share Posted November 20, 2010 Yeh i was having second thoughts about doing it after i posted, its just thet my front end is quite low and its pretty hard to manual looks like im gonna have to buy some echo urbans what a shame. Quote Link to comment Share on other sites More sharing options...
Christophe' Posted November 20, 2010 Report Share Posted November 20, 2010 It is possible to do with a Chris King headset http://www.aspirevelotech.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=PHS529&Category_Code=CKBP +5mm As long as you have enough steerer tube of course. Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 20, 2010 Author Report Share Posted November 20, 2010 Strange idea, the traditional practice would be to use stem stackers and increase the ride height. what i mean is that the angle on the headtube is quite steap because of the short fork. Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted November 20, 2010 Report Share Posted November 20, 2010 I see your idea but no. Where the crown sits is a taper and a deliberate tight fit to stop it spinning. If you wacked a spacer on there youd lose that profile Higher stem? Bars Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 20, 2010 Author Report Share Posted November 20, 2010 I see your idea but no. Where the crown sits is a taper and a deliberate tight fit to stop it spinning. If you wacked a spacer on there youd lose that profile Higher stem? Bars I've got quite a high stack height already, the fork is pretty short, i think im gonna get a Echo Urban, it feels like most of the time my weight is on the front wheel and the headangle is pretty steep because of the short fork. Quote Link to comment Share on other sites More sharing options...
Phatmike Posted November 20, 2010 Report Share Posted November 20, 2010 It is possible, and not a stupid idea at all! All you'd need to do is measure up the taper on the forks, or take them to an engineers shop to measure them, to get a spacer lathed up. It would be a simple job with the measurements. Quote Link to comment Share on other sites More sharing options...
Matt Burrows Posted November 21, 2010 Report Share Posted November 21, 2010 I've got quite a high stack height already, the fork is pretty short, i think im gonna get a Echo Urban, it feels like most of the time my weight is on the front wheel and the headangle is pretty steep because of the short fork. Urbans aren't much longer though, I'd say you want at least 10mm extra if you want to notice any real difference. Trialtechs or the Because forks are both 410mm and should make the bike handle better. Trialtech forks made my bike ride so much better compared to Urbans, probably the best purchase I've ever made for my bike. Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 21, 2010 Author Report Share Posted November 21, 2010 It is possible, and not a stupid idea at all! All you'd need to do is measure up the taper on the forks, or take them to an engineers shop to measure them, to get a spacer lathed up. It would be a simple job with the measurements. I don't think my forks have a tapered steerer it just had a think bit at the bottom by about 1mm for the crown race My link Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 21, 2010 Author Report Share Posted November 21, 2010 Urbans aren't much longer though, I'd say you want at least 10mm extra if you want to notice any real difference. Trialtechs or the Because forks are both 410mm and should make the bike handle better. Trialtech forks made my bike ride so much better compared to Urbans, probably the best purchase I've ever made for my bike. i'm thinking about getting the because i've noticed that they have a thicker wall on the steerer tube does this mean i have to get a differetn size star nut Quote Link to comment Share on other sites More sharing options...
JL ! Posted November 21, 2010 Report Share Posted November 21, 2010 why dont you just get higher bars or stem ? >.< Quote Link to comment Share on other sites More sharing options...
Mark W Posted November 21, 2010 Report Share Posted November 21, 2010 Urbans aren't much longer though... ...but if his current steerer tube's chopped, he could run more spacers with a new set of forks. It'd definitely be better to not raise the BB height/slacken the headangle on the frame by too much, especially if you can just put some stackers under your stem instead of doing it under the headset. Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 21, 2010 Author Report Share Posted November 21, 2010 (edited) why dont you just get higher bars or stem ? >.< Its because the fork is short, the headtube angle is steep. you might be able to see it here Edited November 21, 2010 by Milo123 Quote Link to comment Share on other sites More sharing options...
Mark W Posted November 21, 2010 Report Share Posted November 21, 2010 The steepness of the head angle isn't going to make any difference to how it manuals though, as the reach is going to be the same no matter. It's just the bar height that's the issue, really. On my older Fourplay I actually filed the fork dropouts up a bit and used some little axle-stoppers on my rear dropouts to make the head angle steeper to make it a bit more nimble/lively for more BMXy sort of stuff. Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 21, 2010 Author Report Share Posted November 21, 2010 The steepness of the head angle isn't going to make any difference to how it manuals though, as the reach is going to be the same no matter. It's just the bar height that's the issue, really. On my older Fourplay I actually filed the fork dropouts up a bit and used some little axle-stoppers on my rear dropouts to make the head angle steeper to make it a bit more nimble/lively for more BMXy sort of stuff. i don't think my steerer tube is long enough for a few more spacers so i'll try and find a high riser stem? Quote Link to comment Share on other sites More sharing options...
Mark W Posted November 21, 2010 Report Share Posted November 21, 2010 If your steerer isn't long enough for more stackers under your stem, then it's not long enough for more stackers under your crown race either as you're basically doing the same thing. A higher stem would probably be for the best though. System-Ex's 35deg stems would probably be ideal, not too expensive either considering they're really good stems! EDIT: Just saw your bike photo - that stem's pretty long and low, which are basically the two things you don't want for manuals and bunnyhops. A 90x35 stem would probably be pretty ideal. Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 21, 2010 Author Report Share Posted November 21, 2010 (edited) If your steerer isn't long enough for more stackers under your stem, then it's not long enough for more stackers under your crown race either as you're basically doing the same thing. A higher stem would probably be for the best though. System-Ex's 35deg stems would probably be ideal, not too expensive either considering they're really good stems! EDIT: Just saw your bike photo - that stem's pretty long and low, which are basically the two things you don't want for manuals and bunnyhops. A 90x35 stem would probably be pretty ideal. what is was meaning was that to lift the bike up like 10mm by putting spacers under the headset and take two spacers out from under the stem so the front wheel is further away from the frame, i was looking at the system ex it looks good, i find it wierd to do bunny hops and manual and i feel like im slouched of the front wheel most of the time. Edited November 21, 2010 by Milo123 Quote Link to comment Share on other sites More sharing options...
dirt jumper jake Posted November 21, 2010 Report Share Posted November 21, 2010 just buy some triple clamps. job done Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 27, 2010 Author Report Share Posted November 27, 2010 The steepness of the head angle isn't going to make any difference to how it manuals though, as the reach is going to be the same no matter. It's just the bar height that's the issue, really. On my older Fourplay I actually filed the fork dropouts up a bit and used some little axle-stoppers on my rear dropouts to make the head angle steeper to make it a bit more nimble/lively for more BMXy sort of stuff. I kind of did the opposite by putting two grinded down chain tugs on the fork, I'm not sure if it will be strong enough though. Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted November 27, 2010 Report Share Posted November 27, 2010 A lightbulb has just appeared over my head Mark... Quote Link to comment Share on other sites More sharing options...
Miles Mallinson Posted November 27, 2010 Author Report Share Posted November 27, 2010 (edited) A lightbulb has just appeared over my head Mark... I have been thinking about this for a few days really, like you could have a fork with adjustable dropouts like the onza rear dropouts with a grub screw to adjust which length you want. I'm gonna grind these down abit more to make them abit more flush with the dropouts. Edited November 28, 2010 by Milo123 Quote Link to comment Share on other sites More sharing options...
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