[net.bicycle] light frames vs clunkers

grt@hocda.UUCP (G.TOMASEVICH) (04/17/84)

>Have other people noticed this difference?  Is it easier to learn
>to ride on a heavy bike because of this?
Yes, the lighter frame is less stable because the fork angle is steeper
and there is less front wheel castor.  There are other factors; years ago
Physics Today published an article showing differential equations for bicycle
stability with respect to steering and tipping sideways.  The gyroscopic
effect of heavy wheels is a factor.  Track bikes are the least stable.  So
are track bikies, for that matter. :-)

warrenf@tekig.UUCP (Warren Finke) (04/18/84)

I suspect the greatest stability difference comes from the frame
angles. My mountain bike and my whimpy skinny tired 10 speed weigh
about the same, (28 lbs), but have radically different frame angles.

After riding the mountain bike for the last 6 months, the other bike
frankly scares the hell out of me and I don't know why anyone would
have one unless they are into racing.

The mountain bike is a little 'twitchier' than a real clunker.
I suspect the gyroscopic effect of the wheel weight on a clunker
would add to it's stability when traveling in a straight line. This
would be handy if you lived in Iowa or like to ride great distances
with your hands in your pockets.

				Warren Finke @ Tektronix