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View Full Version : Rear Dropout Spacing with Tight Hub fitment

jeho
05-15-2020, 05:18 PM
As title states, does anyone have a setup where their QR hub mounts very very tight to their rear dropouts?

My rear hubs to hub measures at 137mm (a tad bit bigger than 135mm) however my rear drop on my carbon frame is only 135mm.

To fit the wheel thru the dropout, its a tad stretch.

Anyone with similar issues and running this without/with any problems?
ultraman6970
05-15-2020, 05:44 PM
NO idea in 135 bikes but in 130 sometimes you have stuff tad larger (1 or 2 mm) so doubt you will have a problem with that hub, is just 1 mm per side. The other option you have is check the hub and probably remove a thin washer or something. But probably then the hub will be measuring less than 135. So the problem then is just the opposite.

THe other option is sand some of the paint off if the drop outs are painted.

IME with carbon you should be ok.
FriarQuade
05-15-2020, 11:50 PM
Gone are the days you could fine tune your OLD. Hubs should be pretty much spot on their given size, while the frame should be plus 1-2mm. So I'd fix the hub and leave the frame alone.
oliver1850
05-16-2020, 12:29 AM
As ultraman mentioned, in the old days it was pretty common to have to mess around with spacers, shims, and rim dish (if the wheel was already built) to get a perfect fit in a given frame. But for most modern hubs I'm with FriarQuade, it may not be a simple matter to adjust OLD, especially when the hub needs to be narrower. I don't know if 140 mm spacing is showing up on frames these days but it's the only explanation I can think of for a hub to be be 137 spaced. 128 frame spacing was done in the era of the transition to 8 speed so that either a 126 or 130 mm hub could be used. Perhaps the hub maker is trying to cover 135 and 140 mm spaced frames with the same hub.
ryker
05-16-2020, 01:49 AM
What hub?
oldpotatoe
05-16-2020, 06:20 AM
Gone are the days you could fine tune your OLD. Hubs should be pretty much spot on their given size, while the frame should be plus 1-2mm. So I'd fix the hub and leave the frame alone.

What he said..a modern hub that 'should' be 135mm, should be 135mm...