6 years ago
n expert on every subject this company might interest you if you want to un
derstand current(pun intended) electric bike motor technology:
"High Speed (S) or High Torque (T)
One of the decisions you will have to make if you buy a Crystalyte is wheth
er you want to go with a motor wound for torque or one wound for speed. So
me of the following factors need to be weighed before making a selection ap
propriate to your needs:
Battery pack voltage you anticipate running
Terrain and riding style requirements: will you be climbing a lot of hills
primarily using it on moderate
How big of hills do you ride? Off-road or blacktop? Aggressive riding style
or around town laidback cruising?
Gearing will change depending on what the size of your wheels are. A 20-in
ch wheeled bike will be geared lower than a 29er, which will be geared supe
r high. The more amps and voltage you pump, the more likely you should go w
ith a speed motor for top speed since torque will not be much of an issue.
However if your daily commute involves climbing steep grades you are better
off with the high-torque motors and smaller wheels, and may want to consid
er limiting the volts and amps to keep from smoking your motor.
Rule of thumb: The HT is more efficient at lower speed; the HS is more effi
cient at higher speed."