Rouxenator Posted August 17, 2018 Posted August 17, 2018 Are all caliper mounts the same width? I am fixing up a GT Ruckus and the Shimano rear caliper mount I fitted is making contact with the rotor. Should I try a different brand of caliper mount or what other options do I have here?
Adr!@n Posted August 17, 2018 Posted August 17, 2018 That looks odd. DK built BMX hubs. 110mm spacing. Can you not shift the hub over on the axle?
Rouxenator Posted August 17, 2018 Author Posted August 17, 2018 I was thinking something along those lines and if needs be change the dish of the spokes. But knowing where my limits are I am leaving that to the LBS as they will also have to fix the brake hose and bleed it. To the best of my googling skills these brake mounts are all the same which points to a problem with the spacing on my hub I guess.
Adr!@n Posted August 17, 2018 Posted August 17, 2018 I was thinking something along those lines and if needs be change the dish of the spokes. But knowing where my limits are I am leaving that to the LBS as they will also have to fix the brake hose and bleed it. To the best of my googling skills these brake mounts are all the same which points to a problem with the spacing on my hub I guess. That 6 bolt mount doesn't look standard on that hub and I remember DK going along with BMX parts. Don't think the wheel needs to be dished. You just need to figure out how the previous guy DIY'ed it. You probably only need to move everything a couple of mm to get the rotor in the calliper?
seven Posted August 17, 2018 Posted August 17, 2018 There is only one size (width) of those adaptors.From the limited view of the wheel in the chainstays, the dishing looks okay... don’t think you need to change it. I agree with Adrian
Rouxenator Posted August 18, 2018 Author Posted August 18, 2018 It's a millimeter or two. I can fit the wheel with the caliper mount and it touches the rotor but does not bend it permanently. Even if they have to file down or bend the bit on the frame or the 6 bolt mount I don't mind. Just as long as it works. But I am beginning to think the fault lies with the 6 bolt mount, it is a little wider than is needed.
Alouette3 Posted August 18, 2018 Posted August 18, 2018 Dishing only changes the position of the rim relative to the hub, so that won't help you. Depending which side of the disc your caliper is touch... 1. Add a washer or two between the frame and adaptor to shift it in or 2. Check what spacer washers are fitted to the hub "cup and cone" assembly and move them to the opposite side. Adding a spacer on the left will shift the hub on the axle, affectively moving it the opposite to what 1. would have done.(Don't add new washers or remove complete as this will mess with the spacing)
Rouxenator Posted August 21, 2018 Author Posted August 21, 2018 Waiting for pay day, then I'll drop it off at the bike shop.
CdT85 Posted August 21, 2018 Posted August 21, 2018 It's a millimeter or two. I can fit the wheel with the caliper mount and it touches the rotor but does not bend it permanently. Even if they have to file down or bend the bit on the frame or the 6 bolt mount I don't mind. Just as long as it works. But I am beginning to think the fault lies with the 6 bolt mount, it is a little wider than is needed. Verify that the Over Lock nut Distance is 135mm. Had the issue with my old dirt jump bike that the hub was only about 130mm with 2 x 2.5mm washers on either side where it mated up with the drop outs.Had unending **** with rubbing brakes after I got the bike back from one of the bike shops in stellies when they removed the washers. Ended up buying a new hub with the right spacing and it solved my issue.
Adr!@n Posted August 21, 2018 Posted August 21, 2018 Waiting for pay day, then I'll drop it off at the bike shop. Verify that the Over Lock nut Distance is 135mm. If it is 135mm then your best bet might be to find the cheapest hub you can (Probably in the classifieds section) and rebuild the wheel. It's not that big a mission and it's going to save you a lot of frustration in the future.
Alouette3 Posted August 21, 2018 Posted August 21, 2018 That's a 36 hole rear rim. You may as well walk into the LBS and ask them for and ounce of unicorn poop if you want a new one! I'm busy going through this exercise with my GT, as the freehub is bust, running a 9 speed cassette. Not even Shimano importers have, they can ordee, but will take months! Not a single classifieds post or thread spam has come up with anything here either.It also runs a bolt through axle as the frame has sliding drop outs. So what ever hub you have, will very like need to be cup and cone and you use the original GT axle on it. I'm sure you will sort that one out with some clever spacing or a little filing. Just don't bend, as it will make the mounts no longer 90° to the disc. @Rouxenator Where you based? CT side I could lend a hand
Adr!@n Posted August 21, 2018 Posted August 21, 2018 That's a 36 hole rear rim. You may as well walk into the LBS and ask them for and ounce of unicorn poop if you want a new one! I'm busy going through this exercise with my GT, as the freehub is bust, running a 9 speed cassette. Not even Shimano importers have, they can ordee, but will take months! Not a single classifieds post or thread spam has come up with anything here either.It also runs a bolt through axle as the frame has sliding drop outs. So what ever hub you have, will very like need to be cup and cone and you use the original GT axle on it. I'm sure you will sort that one out with some clever spacing or a little filing. Just don't bend, as it will make the mounts no longer 90° to the disc. @Rouxenator Where you based? CT side I could lend a hand Didn't realise 36h hubs were that much of a mission. Wouldn't this be what you need? http://www.supabike.co.za/product/36h-rear-hub/ Obviously the quality may be an issue there.
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