diamondback_man
06-02-04, 05:03 AM
Does that work? Would i be able to put an MTB crankset on a BMX size bottem bracket?
Mountain Biking - MTB Cranks On BMX BB
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Hunter
06-02-04, 09:34 AM
A MTB Triple? If so NO you cannot. Most BMX cranks are coupled with a Profile type b.b. spindle. Therefore making MTB cranks incompatible. Not to mention of course the chainline problems you would have. There are tons of BMX cranks out there that can be had.
Maelstrom
06-02-04, 10:52 AM
There are adaptors to support a mtb bb in a bmx shell.
But why? Honestly bmx bb's are a lot stronger as are the cranks (usually).
But why? Honestly bmx bb's are a lot stronger as are the cranks (usually).
diamondback_man
06-02-04, 05:11 PM
Well, im gettin this norco 4Hun frame shipped to me, and i want to know if i can put my old MTB Crank on it.
thedopefish
06-02-04, 06:29 PM
why would they put a bmx bb on an mtb? hmmm....
Dannihilator
06-02-04, 06:41 PM
Strength.
seely
06-02-04, 06:58 PM
Yeah they do it on a lot of urban/trials/fr hardtails these days it seems....
thedopefish
06-02-04, 07:02 PM
weird... so perhaps a bmx bb isnt really a bmx bb anymore!? gah!
Maelstrom
06-02-04, 07:10 PM
Its becoming the way it should have been on some boutique ht's and a couple big production ones. BMX bb is the way to go for street bikes and I think for dh too.
diamondback_man
06-02-04, 07:33 PM
do you tink my LBS would have the adapter cups?
Maelstrom
06-02-04, 07:48 PM
To go from bmx to mtb or the other way around?
Hunter
06-02-04, 11:05 PM
OK I get it I thought the question was to put a MTB crank on a BMX BB in a BMX frame. Sorry. Anyway companies like Profile, and Azonic makes a conversion for BMX BB's to work with MTB's.
diamondback_man
06-03-04, 06:30 AM
^how much do the cups cost around?
Hunter
06-03-04, 09:42 AM
DB Man
Azonic has their 454 englsh b.b avaiable to fit 10 spline cro-mo cranks it would be $60. Profile hs their conversion available it would be $70. However Profile is a 48 spline spindle. There are some BMX cranks that can work with a Profile spindle but no MTB cranks that I know of. Also with these conversions you have to run te corresponding spline pattern for the crank arms. You can get spiders with Profile or Azonic to run 1, 2, or 3 chainrings but with all the DH or FR cranksets available it would make more sense just to get a set of those. They for the most part are forged Cro-Mo and are typical to the BMX scene.
I just wish people would have listened to Mark and I years back when we said to all the DH guys just to run BMX stuff on their rigs but no one would listen then. Now look at the current DH and FR scene, using BMX stuff is becoming the norm.
Azonic has their 454 englsh b.b avaiable to fit 10 spline cro-mo cranks it would be $60. Profile hs their conversion available it would be $70. However Profile is a 48 spline spindle. There are some BMX cranks that can work with a Profile spindle but no MTB cranks that I know of. Also with these conversions you have to run te corresponding spline pattern for the crank arms. You can get spiders with Profile or Azonic to run 1, 2, or 3 chainrings but with all the DH or FR cranksets available it would make more sense just to get a set of those. They for the most part are forged Cro-Mo and are typical to the BMX scene.
I just wish people would have listened to Mark and I years back when we said to all the DH guys just to run BMX stuff on their rigs but no one would listen then. Now look at the current DH and FR scene, using BMX stuff is becoming the norm.
diamondback_man
06-03-04, 03:14 PM
DB Man
Azonic has their 454 englsh b.b avaiable to fit 10 spline cro-mo cranks it would be $60. Profile hs their conversion available it would be $70. However Profile is a 48 spline spindle. There are some BMX cranks that can work with a Profile spindle but no MTB cranks that I know of. Also with these conversions you have to run te corresponding spline pattern for the crank arms. You can get spiders with Profile or Azonic to run 1, 2, or 3 chainrings but with all the DH or FR cranksets available it would make more sense just to get a set of those. They for the most part are forged Cro-Mo and are typical to the BMX scene.
I just wish people would have listened to Mark and I years back when we said to all the DH guys just to run BMX stuff on their rigs but no one would listen then. Now look at the current DH and FR scene, using BMX stuff is becoming the norm.
i heard FSA makes one for only around 30$
Azonic has their 454 englsh b.b avaiable to fit 10 spline cro-mo cranks it would be $60. Profile hs their conversion available it would be $70. However Profile is a 48 spline spindle. There are some BMX cranks that can work with a Profile spindle but no MTB cranks that I know of. Also with these conversions you have to run te corresponding spline pattern for the crank arms. You can get spiders with Profile or Azonic to run 1, 2, or 3 chainrings but with all the DH or FR cranksets available it would make more sense just to get a set of those. They for the most part are forged Cro-Mo and are typical to the BMX scene.
I just wish people would have listened to Mark and I years back when we said to all the DH guys just to run BMX stuff on their rigs but no one would listen then. Now look at the current DH and FR scene, using BMX stuff is becoming the norm.
i heard FSA makes one for only around 30$
a2psyklnut
06-03-04, 03:25 PM
Hunter, do you have a QBP catalogue handy. I have ordered a conversion kit for a customer. It's a reducer cup that presses into a BMX bottom bracket and is threaded on the "female" side to accept a standard catridge type bb.
I think it was about $50! This way you can use ANY cartridge type bb.
Let me do some searching.
I think it was about $50! This way you can use ANY cartridge type bb.
Let me do some searching.
a2psyklnut
06-03-04, 03:30 PM
Here's some: http://mikesbicyclecenter.com/site/page.cfm?PageID=129&SKU=CR9121
Pricey!!!!
L8R
Pricey!!!!
L8R
a2psyklnut
06-03-04, 03:33 PM
http://www.bikeusa.com/MERCHANT2/merchant.mv?Screen=PROD&Store_Code=MSGI&Product_Code=CR9121
A little cheaper!!!
L8R
A little cheaper!!!
L8R
KleinMp99
06-03-04, 03:55 PM
do you tink my LBS would have the adapter cups?
^how much do the cups cost around?
Here......hold my hand and lets walk down to your bikeshop and ask!
Come on...
^how much do the cups cost around?
Here......hold my hand and lets walk down to your bikeshop and ask!
Come on...
diamondback_man
06-03-04, 04:12 PM
Here......hold my hand and lets walk down to your bikeshop and ask!
Come on...
Nah, I think I can handle it on my own. But thanks for offering to come! :p
Come on...
Nah, I think I can handle it on my own. But thanks for offering to come! :p
Hunter
06-04-04, 10:10 PM
Hunter, do you have a QBP catalogue handy. I have ordered a conversion kit for a customer. It's a reducer cup that presses into a BMX bottom bracket and is threaded on the "female" side to accept a standard catridge type bb.
I think it was about $50! This way you can use ANY cartridge type bb.
Let me do some searching.
I was going by memory all my catalogues are at the shop. LOL anyway I did not know of the Crupi set I was going by what BTI has that I knew of.
I think it was about $50! This way you can use ANY cartridge type bb.
Let me do some searching.
I was going by memory all my catalogues are at the shop. LOL anyway I did not know of the Crupi set I was going by what BTI has that I knew of.