Originally Posted by
asmallsol
Tape a bunch of weights to the tire on one of the wheels and it will spin forever. Its about rotational inertia..
spot on!
What tyres were on each wheel, if any? The heavier tyre will spin longer.
A wheel with a tyre and tube on it spins for much longer than one without
Originally Posted by
Rutnick
The advantage of ceramics is when there is a load applied. .
HED have found the opposite.
They've found no quantifiable rolling resistance advantage on loaded wheels with ceramic bearings, but did on unloaded wheels
"There was a measurable drag difference between ceramic bearings and steel bearings when we tested unloaded wheels, but the difference was small enough that we could not measure it on a loaded wheel."
http://www.hedcycling.com/wheels/ceramicbearings.php