Dura Ace Bottom Bracket Drag

Discuss light weight issues concerning road bikes & parts.
thisisatest
Shop Owner
Posts: 1980
Joined: Sat Jun 13, 2009 4:02 am
Location: NoVA/DC

by thisisatest

ticou wrote:One ceramic front wheel spun for 12 mins with a 3 mph push, and yes, the owner did see a real world difference.

when i was 14 or so, i timed the spin on my bmx front wheel, it was a murray with steel hub and poo bearings. it spun for 11min or so. i did push it harder than 3mph to start, though. comparatively, the rear spun for 1.5min. still, the point about loading the bearing to see what it will be doing in the real world applies.

kulivontot
Posts: 1170
Joined: Sun May 16, 2010 7:28 pm

by kulivontot

Good to know this is normal. Back to riding the bike.

by Weenie


sawyer
Posts: 4480
Joined: Fri Dec 15, 2006 7:45 pm
Location: Natovi Landing

by sawyer

The spin in the stand is of course under some load.

No-one actually believes there's no correlation between stand and road spin do they? :wink:
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boysa
Posts: 1452
Joined: Sun May 04, 2008 10:03 pm
Location: Too far from my bike.

by boysa

There is definitely some correlation, at least in my opinion. I have a beautiful Chris King bb, but it doesn't spin anywhere near as freely as the Campagnolo Super Record bb I had on before. That thing was ridiculous.

I've also been thinking about this issue as it relates to pedal bearings, and because of that have actually considered switching from Look to Campy or Shimano.
"Deserve's got nothing to do with it." William Munny

ticou
Posts: 459
Joined: Mon Mar 19, 2012 3:31 pm

by ticou

boysa wrote:There is definitely some correlation, at least in my opinion. I have a beautiful Chris King bb, but it doesn't spin anywhere near as freely as the Campagnolo Super Record bb I had on before. That thing was ridiculous.

I've also been thinking about this issue as it relates to pedal bearings, and because of that have actually considered switching from Look to Campy or Shimano.



Thanks for that Boysa, I was trapped in the Borazon kingdom of Shim for awhile there.

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