K2 / Proflex Riders Group
General => Tech Forum => Topic started by: Carbon_Kiwi on January 14, 2009, 12:35:07 pm
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hey guys,
I'm going to look at replacing my bottom bracket/crank combo this year.
currently it's all 'old school': http://bit.ly/jIjM (bottom bracket and crank set by these guys)
anyway, i'm going to grab one of these: http://bit.ly/1FfOzV
so first question is - will this fit ok?
then... carbon crank set recommendation to go this bottom bracket - anyone?
i'm running 34/42 (no granny), a little concerned with chain ring fit etc on my Oz.
thanks in advance :)
J
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I am hoping someone with some good input will respond. I am collecting parts to build up an OZ so I would like to know also.
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you need some input from OZ guys...I think there are some tricks to learn about OZ bottom brackets,not the least of which are some alignment issues...have you guys tried a searh of this forum,I am sure it has been discussed in the past.Contributors with specific knowledge are OP and Hammer.....maybe search on their posts?
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I am sure the Chris King BB will fit, but says compatible with Shimano cranks. I don't know of any Carbon cranks that are compatible with shimano BBs.
Maybe Chris King tech support has a recommendation.
I have often considered an American Classic Issis BB to mate with an original FSA carbon Pro crankset. Not altogether the lightest, but sexy. Beyond that, I am a square taper devotee.
Good luck, and keep us posted.
Terry
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I am sure the Chris King BB will fit, but says compatible with Shimano cranks. I don't know of any Carbon cranks that are compatible with shimano BBs.
Terry
I've got a FSA carbon crank (44/34/22) on a standard OEM Bottom Bracket (Shimano XT UN73 Sqr Taper 73x113mm) on my 4000se and I plan to put an Octalink Carbon FSA crank onto my Oz rebuild project
(http://idriders.com/proflex/coppermine/albums/userpics/10284/normal_IMG_1154.JPG)
I might consider changing the BB for a 115 or 118 to give a little more offset ("Q") but it all works fine as it is.
Col.
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good feedback so far guys - thanks for the input. I'll do some research myself and post anything I find here.
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I recently fintted a new FSA carbon K force with the Mega Exo BB that came with it, no probs, looks great and works great I recommend it if you can spare the pennys
(http://i226.photobucket.com/albums/dd144/jtolputt/DSC_0384.jpg)
(http://i226.photobucket.com/albums/dd144/jtolputt/DSC_0380.jpg)
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In my Altura catalogue the FSA carbon cranks are £499.99. WHich is an awful lot of cash, in todays economic climate.
As for external BB , ie hollow tubes with larger, more outboard bearings , the RAce FAce ones can be destroyed in a couple of months by winter riding. They just dont last. The one i smahed open had lots of loose bearings covered in mud and crap.
Hope make a rebuildable X type BB, C£60 with cartridge bearings and decent seals.
Ck also now make a BB for £110 , which is servicable on teh bike, by squeezing freash grease from the inside out, via a special grease gun. Its another £30 for teh gun itself. I do not know if any other grease guns will work.
Shimano BB' s designed for Hollowtech 2 are ,apparently interchangable with RaceFace , but i have not used one myself.
Ceramic x types BB's are among the hardest wearing ,Acros or Accoss make one for C£60. Avoid superstar, they get slammed on STW
Someone makes a very nice looking Carbon Nior crankset, bit less cash tha the FSA.
Everyone always recommends getting the faces done every time a BB is changed, all to do with load sharing. There are different ways of tightening too, either grease the threads if no compression ring, or grease them then tuck up teh compression ring ( it might be the other way round so don'tquote me onthat , its something i was told by a bike mech)
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Nice jtolputt :)
Is that a 44/32/22 ???
No issues with chainline, BB width, front der?
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yep it certainly is, Ive had no issues, its a really smooth ride and shifting is just the same, I did expect to have to adjust every time i went out but sofa so good