Cyclocross - Converting a light QR hub to bolt-on
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
05-05-10, 01:58 AM
For this season I am hoping to find a good 130mm rear hub that I can use with spacers and a cog for singlespeed. I'm interested in finding either a lightweight bolt-on cassette hub, or a lightweight QR hub and converting it somehow. I have lots of questions regarding such, and am not entirely sure it will be worthwhile, but I think it might be.
Basically I'm tired of the crappy freewheels that I put on my flip-flop hub, and I think a cassette hub may have a better seal than the add-on freewheels. Plus, I think with the right hub, it could weigh less.
So my questions are:
-is there a good lightweight bolt-on hub that I've somehow missed?
-would it be possible to buy a longer axle and replace it on a Dura-ace hub? The 7700 "looks" like I could do that, but I haven't taken one a part.
-Could I do it to a dura-ace 7800, or a Campy Record? That would be super light/awesome.
05-06-10, 03:57 AM
The 7700 uses a new 15mm axle like my XT 775. It is junk, go for a 105 or ultegra. They use 10mm axles that can be easily converted to solid axle. The good news is they are cheaper anyway. In a year I have had one freehub lock up for no reason and just had a bearing race fall apart causing another freehub failure. The hub never has stayed tight for me either, always had a lot of slop causing the bike to handle funny. I will be using plain old Deore for my next wheelset, I've never had a problem with those.
05-06-10, 11:01 AM
I know I'm not answering your question but why do you need a bolt on hub? I've never had a problem with a QR as long as it was a good QR.
05-06-10, 11:46 AM
Thanks for the info C_M :) That is definitely good to know.
I guess I haven't tried using a QR very much. Even with bolt-on I've slipped the rear wheel (I tighten the nuts harder now), and once when I tried a QR, it sheared in two by the time I got it clamping to where I thought it should be. Have you found some QR's that seem reliable enough for track dropouts? I'm also 180-190lbs and more torquey than high revving... but that would definitely be a much simpler solution if it could be reliable :)
05-06-10, 12:47 PM
I will only use Shimano external cam QR's on single speeds or fixed gears. They are strong enough for everything I've thrown at them and like you, I'm not much of a spinner.
05-06-10, 06:01 PM
If you want to use a quick release, a Surly Tugnut will keep it from slipping. The Surly version has washers that allow it to be used with quick release or solid axles. I have used it on bikes with track ends and forward facing dropouts, plus it has a built in bottle opener.:thumb:
Shimano QR's have always worked for me on geared, SS or fixed bikes. Nuts, non-shimano QR's and wing nuts have all slipped on me on bikes with horizontal dropouts.
I recommend swapping the QR to a Shimano one and only converting the hub if that doesn't work.
05-10-10, 10:56 AM
I didn't know that anyone ever rode singlespeed or fixed with QR's on a regular basis. I will definitely give that a try. Thanks for the help.
Powered by vBulletin® Version 4.1.12 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.