Sent: Sunday, May 27, 2001 1:14 PM
Subject: Re: [c-a] Nose strut spring

John, what the front end needs is dampening; stiffer springs alone will not help. There is nothing in the current design to stop stored energy from a compressed spring from being transmitted back into the suspension system. Once the cycle of repeated oscillations starts, it's almost impossible to stop it. This is from just one bump. Any successive bumps, if timed just wrong will add more energy into the existing one and compound an already bad situation. Repeated hits of expansion joints are just the right thing for exaggerating this nightmare.
Last year I spotted what I know to be a solution. A small nitrogen gas filled cylinder with an adjustable concentric coiled spring. Where? On a mountain bike! The whole unit couldn't be more than five inches long; perhaps 1.5 inches in OD.

This message documents a problem that is solved by the internal shock absorber In the NL1 noselift. (from Jack Wilhelmson).


Art Bianconi [ This e-mail address is being protected from spambots. You need JavaScript enabled to view it ]