Good, light replacement crankset for Trek Madone?

Discuss light weight issues concerning road bikes & parts.
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fluxgame
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Joined: Tue Jun 28, 2011 11:32 pm

by fluxgame

I have a Trek Madone that I'm looking to lighten up a bit. Currently have an FSA Energy crankset. Can anyone recommend a 130BCD crankset that is substantially lighter than what I have that would be compatible with my BB90 frame? I've looked at the Extralights and Lightning cranks, but they don't seem to have compatible versions.

by Weenie


Colin
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Joined: Mon Mar 02, 2009 4:50 am

by Colin

I believe lightning makes bearings to work with your BB90 frame.

CoachPotatoBilly
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by CoachPotatoBilly

fluxgame wrote:I have a Trek Madone that I'm looking to lighten up a bit. Currently have an FSA Energy crankset. Can anyone recommend a 130BCD crankset that is substantially lighter than what I have that would be compatible with my BB90 frame? I've looked at the Extralights and Lightning cranks, but they don't seem to have compatible versions.




****Pretty sure Lightning makes BB90 versions of their crank. I own both Lightning and Extralights (not in BB90), and both work well. The advantage of the Lightning is that you can get them in whatever length you need whereas the Extralights only come in 172.5 I think. The Lightnings are lighter as well (I think about 455ish grams complete or so with the 130 aluminum spider that is solid aluminum, and less for the 110 which is drilled out, or the carbon 130 TT spider..). The Extralights are not as stiff as the Lightnings, but have a really nice and narrow Q-factor which I prefer.

Both are nice cranks, and the bearings are easily serviced and/or replaced. The weights above are not exact, but pretty close. I am going by memory but have everything written down somewhere... if only I could remember where.. :)

fluxgame
Posts: 2
Joined: Tue Jun 28, 2011 11:32 pm

by fluxgame

Ahhh, thanks guys. Did a little more digging and found the BB90 option for the Lightnings. Just have to save my pennies now.

daj
Posts: 246
Joined: Mon Oct 12, 2009 6:36 pm

by daj

Lightning has a 30mm spindle so in order to make it work you need bearings that will have extremely small ball bearings. So make sure you buy lots of spare bearings because I've got a feeling you're gonna need them.

chops
Posts: 117
Joined: Fri Aug 26, 2005 8:13 am

by chops

Anyone know if you can use a "regular" Lightning crankset by just using the correct bearings for bb90?

joyea
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Joined: Sat Dec 22, 2007 10:41 pm
Location: Israel
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by joyea

Ax-lightness have a version also, called press-fit for that kind of BB.
always try to be better, rider, person...

Scarpa
Posts: 72
Joined: Wed Sep 13, 2006 3:43 pm

by Scarpa

Can you post a link, where i can buy the bearings to fit the lightness crank in a bb90 frame?

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prendrefeu
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by prendrefeu

SRAM Red Exogram will be lighter and more cost effective.
Exp001 || Other projects in the works.

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horse
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Joined: Sun Oct 09, 2011 1:09 pm

by horse

Dura-Ace DURA-ACE dURA-aCE DuRa-AcE dura-ace only for Treks, TR..
[need one go on..?]

by Weenie


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