eam3@sphinx.UChicago.UUCP (edward a. morris) (10/07/85)
Since my request for opinions, etc., last week, I have had several
inquiries about what a wind load simulator is. I will try to give
a reasonable description and some comments.
A wind load simulator is a stationary training device that simulates
road wind resistance. Fans driven by the rear wheel cause load
resistance to increase as spin increases. In contrast, workload
remains effectively constant with traditional rollers.
Rollers are excellent for developing smooth cadence and riding form
while providing a fair aerobic work out. Wind load simulators, on the
other hand, provide a better aerobic work out, but little towards
improving technique. [Some would say they may even be detrimental.]
One of the criticisms of most wind trainers is that they induce
potentially damaging stress in the bicycle frame. The two most common
attachment points are:
(1) Front fork - wheel is removed and fork is attached to a
fixed quick release skewer.
(2) Bottom bracket - a cradle or clamp is used to support
the bike from below.
Some manufacturers have acknowledged stress problems and are selling
trainers with alternate mounting techniques, e.g., the RacerMate
"Piggy Back" (tm) and the Kreitler "Killer" (tm, I think). Kreitler
also makes a combination roller/wind load machine, which sounds ideal
except it is expensive.
Hope to hear more opinions, criticisms, additions. Will summarize and
post to the net if it seems worth while.
Ted Morris
University of Chicago
Library Systems Group
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(312) 962-8763