Bottom Bracket Stiffness

[islaysteve]

I have a question, not specifically RBW-related, but hopefully you'll indulge me:  Having removed (and sold) a crankset from my Bleriot, I've noticed that the bottom bracket that I installed less than 200 miles ago turns rather stiffly, when turned by hand on the square-taper shaft.  For comparison, I pulled out a Shimano (UN-72, I believe) unit from the parts bin.  It has somewhat uncertain mileage, but may be in the vicinity of 15K miles.  I'd say that it turns 2 to 3 times easier than the BB that is installed.  The installed BB is a VO unit.  Should I be concerned?  Do they loosen up with mileage?  Would I feel the difference in riding?  ( I need all the help I can get!)  And finally, should I just find a compatible Shimano unit to replace the current BB with?  (I have no interest in going upscale, thanks).  

Steve

[Jim Thill - Hiawatha Cyclery]

If it's smooth but stiff, it will probably break in. If it's rough and stiff, then I'd replace.

[benzzoy]

It could be that there is binding in the installation. Pull out the
BB and do the twist test again.

[Tim McNamara]

On Nov 17, 2011, at 10:16 PM, benzzoy wrote:

> It could be that there is binding in the installation. Pull out the
> BB and do the twist test again.

I have found with cartridge BBs that if I crank down the retaining rings or cups (depending on the design) too tightly the bearings seem to bind.

[islaysteve]

Thanks guys.  I'll pull it out and see how it feels.  Steve