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proper way to measure bb height?

dfinn

Turbo Monkey
Jul 24, 2003
2,129
0
SL, UT
i just measured my trail bike and it's 12.5". That seems awfully low compared to the other specs I've seen for bikes. My guess is that I measured it wrong. I measured from the floor to the very bottom of the bb shell. Is that right?
 

OGRipper

back alley ripper
Feb 3, 2004
10,647
1,116
NORCAL is the hizzle
WV Hippy said:
Floor to center. (Silly isn't it)

Yes, floor to center of the bb axle. And I don't think it's silly, there is too much variation in shell thickness and (to a lesser extent) bb size to get a reliable measurement any other way.
 

BMXman

I wish I was Canadian
Sep 8, 2001
13,827
0
Victoria, BC
If you want a truly accurate BB height measure the height from the ground to the center of your BB spindle when you're on the bike. You will need a freind to help though.....D
 

maxyedor

<b>TOOL PRO</b>
Oct 20, 2005
5,496
3,140
In the bathroom, fighting a battle
why do you care you got a foes mother f'n fly in my opinion the best xc-downhill bike in existance it can do everything short of road. does the geometry matter?
by the way the bb height on my large '05 fly with a 888 measures out to just between the two bigg scars on my right shin, the best for free-ride where as the left shin scars are downright cross-countryish.

for a truly accurate measurment you rely need to do it without tires as there height does affect the overall height of the bike.