Converting a road hub to a mtb hub - Easy?

Discuss light weight issues concerning mountain bikes & parts.

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prendrefeu
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by prendrefeu

Hello -

One of the bikes I'm working on uses a 135mm rear (on an aluminum frame) however it is set up for rim brakes and not disc - there are no disc brake tabs at all and I'd rather just stick with the rim brake set up for this application. Thing is, it is getting near impossible to find a decent light rear hub with 135mm spacing and no disc mounts.

I'm now thinking about taking one of the many 130mm (road) rear hubs I've got available that are fairly light... certainly lighter than most mtb hubs, and quite durable as well, and converting them to 135mm. Is this possible? How easy or difficult would it be? Is it just a matter of adding a few spacers in certain places?
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Tom-s
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by Tom-s

What's light?
Mack superlight is 177g @ 263€
Front is 47g @ 123€

TheRookie
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by TheRookie

You just need an MTB 135mm axle and 2x2.5mm spacers (off ebay) between the cones and locknuts - assuming C&C hub, if it's a sealed bearing you'll need the same spacers but placement will be dependant on the exact hub you have.

Simon
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Cheers!
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by Cheers!

Just get a chris king classic hubset or Hope Pro race 3.

thisisatest
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by thisisatest

some places have 135mm non-disc dt swiss hubs on sale (closeout?) right now..

bikedoc
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by bikedoc

depends on the hub, if it uses a standard 9mm threaded axle really easy just get a longer axle and a couple of spacers.
if it has pressfit end caps just get a machine shop to knock a couple of wider ones up

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Cheers!
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by Cheers!

Why use a 130mm spaced rear hub which does not optimize it at all the hub for anything... just buy a 135mm hub and be done with it.

Surf ebay.com for some retro/vintage 135mm rear hubs if the DTswiss/Chris King/Hope Pro3 are not to your liking.

jooo
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by jooo

Not sure why you're having trouble finding something. A fair bit to choose from depending on your budget. I think they've been recently discontinued but you can find Shimano XTR rim brake hubs in 135mm spacing quite cheaply. There's Hope, King classics, the White Industries M15 and DT. More pricey and you have things like Tune Mag170 and Mack.

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prendrefeu
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by prendrefeu

I haven't heard of Mack before - and my google-fu isn't that great apparently, can someone provide a link?

A lot of the standard options are simply heavy. XTRs don't quite cut it for weight when I'm targeting a range of 200g-240g for the rear.
Last edited by prendrefeu on Wed Mar 07, 2012 2:21 am, edited 1 time in total.
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jooo
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by jooo

XTR isn't that heavy, almost identical to DA, about 265grams from memory.

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prendrefeu
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by prendrefeu

EDIT: Eventually found some info on those Mack hubs folks were referring to. All I found was an e-mail address for contact and a website that doesn't exist (mackhubs.com) - would that be it? Is there any more info on these?

The weights look perfect! :twisted:
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Tom-s
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by Tom-s

I got the info from the website you referred to.
So it was online a few days ago. Just mail him @ mackhubs@o2.pl
His hubs are 24 POE like Tune and have quality bearings in them.
Heard good things about them.

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