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 Bike torque enhancer for pulse motor?
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Posted - April 25 2013 :  02:54:00  Show Profile Send Luciano a Private Message  Reply with Quote
Hi everybody,

i just stumbled into a patent of a bicycle torque enhancer.. using permanent magnets only.
Patent Number: 4,662,644
Date of Patent: May 5, 1987

Link: Patent:
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complete patent pdf:
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what stunned me, is that the patent from the 80s is quoted in many other patents so i assume it works.

My question is, would it be possible to adapt it to a pulse motor to enhance the torque?
there are 2 configurations, 1 being the iron part moving having fixed permanent magnets on the stator,
the other is a rotating permanent magnet in the middle with a soft iron stator around it.

second could be reproduced on a pulse motor.

imagine a shaft, with a 2 magnet disc powered by 2 coils (angle like the bicycle pedals)
further on, on the same shaft, a diametrical magnetized ring magnet.
around the ring magnet, as a stator, the iron core of a toroid transformer, cut open where the air gaps should be on the drawings.

maybe it has been tried already?
maybe it cant work because a bicycle is not a pulse motor?

I know you are going to say: test it...
but it certainly would be lots of energy wasted if it was done already and not working for pulse motors
if the gained torque is minimal for powering a generator..
if maybe the torque is only enhanced in very low frequencies
if the patent is a known fake
or... or..

Many questions...


btw.. is there an easy reliable way to measure torque of a motor?

(sorry if i posted in wrong section, but i didnt know where to put it..)

Edited by - Luciano on April 25 2013 03:24:00
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