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Old 05-26-07, 06:39 PM   #1
Doahh
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Shimano RM60 rear hub

I have a trek 4300 with that rear hub. I want to upgrade to Disc Breaks... can I use that hub with disc breaks or will I need a new hub? If I need a new hub can I just have my wheel and tire transfered to the new one?
Thanks
~Josh Carroll
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Old 05-26-07, 10:21 PM   #2
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Anyone?
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Old 05-26-07, 10:29 PM   #3
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yes, you will need a new hub for disc brakes.
Yes, you can have the rear wheel built with another hub. This most likely will require new spokes as well.
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Old 05-26-07, 10:35 PM   #4
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It would much cheaper to buy a pre built wheelset.
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Old 05-27-07, 03:11 AM   #5
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You can find decent rear wheels with disc mounts for less than $100. Just don't plan on dropping on too many big things.
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Old 05-27-07, 08:55 AM   #6
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OK so I can just go to my LBS and get a whole new wheel ready to install disc breaks?
I'm not thinking of doing anything super crazy just some trail riding and small jumping
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Old 05-27-07, 03:32 PM   #7
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You sure can!
You will just have to have the cassette transferred over to the new wheel, and you should be ready to roll.
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Old 05-27-07, 04:58 PM   #8
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anyone know the sizes I need for my 4300 with discs?
I was thinking Avid BB5 mechanicals
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Old 05-27-07, 10:51 PM   #9
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what do you mean sizes?
you need a 26" disc compatable wheel
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Old 05-28-07, 10:35 AM   #10
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Is there a width I need to look for?
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Old 05-28-07, 11:40 AM   #11
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135mm.
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Old 05-28-07, 01:58 PM   #12
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Originally Posted by Doahh
Is there a width I need to look for?
as stated, 135mm, and pretty much any 26" mtn bike wheel will be 135mm.
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Old 05-29-07, 08:36 PM   #13
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I've decided with help that this is what I want...
http://www.jensonusa.com/store/produ...Wheel+Kit.aspx
Could I just not shift past gear 8 and leave it at that?
I pretty much eave my bike at gears 2 and 4-6 and when going up a hill I go to 1 and 2-3
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Old 05-29-07, 09:12 PM   #14
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No, you will need a 9 speed rear derailleur.

And do you know that both frame and fork have disc brake mounts?
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Old 05-29-07, 09:18 PM   #15
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yes because I can see them and it's the exact same frame as the 4300 Disc...
Everyone else has said that I could use my current cassete and derailleur as long as I don't shift into gear 9
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Old 05-29-07, 09:31 PM   #16
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Quote:
Originally Posted by Doahh
I've decided with help that this is what I want...
http://www.jensonusa.com/store/produ...Wheel+Kit.aspx
Could I just not shift past gear 8 and leave it at that?
I pretty much eave my bike at gears 2 and 4-6 and when going up a hill I go to 1 and 2-3
Well i see you have already made up your mind on what you want. As i was going to suggest maybe Mavic Crossrides & BB7's
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Old 05-29-07, 09:35 PM   #17
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Quote:
Originally Posted by Doahh
Everyone else has said that I could use my current cassete and derailleur as long as I don't shift into gear 9
No that is incorrect. The cogs on a 8 speed cassete are spaced further apart then on a 9 speed cassete. Therefor an 8 speed shifter will pull more cable then a 9 speed.

You could easily fix this problem by buying a 9 speed cassete and a 9 speed chain, chances are that your current derailleur is compatible with both 8 and 9 speeds.
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