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135mm disc hub to 130.

Old 10-20-13, 03:48 PM
  #1  
dr1445
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135mm disc hub to 130.

i have a shimano deore fh-m525 rear disc hub i would like to use on a 130mm aluminum cross frame. the shimano parts break down shows 2 left side washers 2.3 and .5mm, 2.8mm total if i remove both washers. i see some frames are being made in 132.5 and can be used for both the 130 and 135 hubs. i reckon the 132.2mm should work if i cut down the axle and remove the washers. anyone have experience with this setup?
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Old 10-20-13, 04:27 PM
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Originally Posted by dr1445 View Post
i have a shimano deore fh-m525 rear disc hub i would like to use on a 130mm aluminum cross frame. the shimano parts break down shows 2 left side washers 2.3 and .5mm, 2.8mm total if i remove both washers. i see some frames are being made in 132.5 and can be used for both the 130 and 135 hubs. i reckon the 132.2mm should work if i cut down the axle and remove the washers. anyone have experience with this setup?
I haven't tried it, but consider that that will move the disc closer to the dropout. So the caliper will also have to be moved sideways by the same amount. Is there enough float in the mounting system, or do you have spacers for the job?
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Old 10-20-13, 04:40 PM
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Originally Posted by FBinNY View Post
I haven't tried it, but consider that that will move the disc closer to the dropout. So the caliper will also have to be moved sideways by the same amount. Is there enough float in the mounting system, or do you have spacers for the job?
this. get the proper hub. most disc road frames these days are 135mm to use mtb hubs
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Old 10-20-13, 05:21 PM
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All your reduction will be from the disc side - a reduction of 5mm.

The drive side has to remain as-is to preserve the 8/9/10 speed compatibility.

This as FB already mentioned is going to throw off the disc positioning in reference to the caliper - if the caliper doesn't have enough adjustment space you'll be stuck in a tight spot.

Test first, check to see if your frame can already accommodate 135mm OR find a native 130mm disc rear hub.

=8-)
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Old 10-20-13, 06:19 PM
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I have the hub but not the frame. The frame is nashbar for $115 and for sure it is 130mm spacing. 130mm disc hubs go for more than the cost of the frame. I have seen mention of making a 130 from a 135 but no details, so I am checking feasibility.
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Old 10-20-13, 07:05 PM
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I would be tempted to try and shove the 135mm hub in the frame and see how it goes. I've put 130mm hubs in 126mm aluminum frames without issue. I did not attempt to cold set the frame though which would be a bad idea.
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Old 10-20-13, 10:11 PM
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Originally Posted by dr1445 View Post
I have the hub but not the frame. The frame is nashbar for $115 and for sure it is 130mm spacing. 130mm disc hubs go for more than the cost of the frame. I have seen mention of making a 130 from a 135 but no details, so I am checking feasibility.
We already gave you the details...

Call Nashbar, ask 'em to check. If it's at least 132m when free sprung - then a 135mm will fit just fine.

=8-)
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Old 10-21-13, 06:10 AM
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The nashbar frame has a post to IS adapter setup and therefor the caliper will mount on the inside of the frame. This will require the removal of material to space the caliper out a distance equal to the combined thickness of the washer and spacer removed, in this case 2.8mm. The tektro disc brake adapter I have is aluminum, so I can remove the 2.8mm [.110”] with a file. Only the area where the adapter meets the frame will need attention. I will order a spare adapter, file it down, put the washer and spacer on the right and do a fit & function to see how the disc rotor to caliper distance works out on one of my 135 disc frames.
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