[python] Re: Electric python (!)
- From: Ray Schümacher <mtb@xxxxxxx>
- To: python@xxxxxxxxxxxxx
- Date: Mon, 12 Sep 2005 07:31:09 -0700
At 01:12 AM 9/12/2005, you wrote:
>On 09/12/2005 05:50 AM, Ray Schümacher wrote:
>>I had a wild hair, so I put my dusty old electric motor on the rear of the
>>python.
>>I didn't use it much, ever, because it is a little weak for my weight. They
>>do sell a newer 36V 600W brushed version now (with optional NimH pack) that
>>would probably be nicer.
>>In any case, it cruises nicely ~25km/h, I'd guess. It will go up slight
>>grades, ~3%, at ~15. The hub weighs ~5kg as does each battery (2) so it
>>changes the handling a bit. The main issue is the wiggly support frame which
>>adds some whippy feel to the rear. I would not recommend it for a learner.
>>
>That is cool! Can it work in addition to pedal power? Could be cool on
>really long trips, when the legs begin to fall of the pedals... A friend
>of mine ---not me! ;-P --- always starts talking about solex motors on
>such trips.
Hi Dirk,
Yes, pedal power is required, really. The start-up torque of the brushless
motors is rather low, and you do get the opposite feeling of acceleration
stability. When you apply power, the pivot wants to turn easier, as opposed to
"straightening out" like your climbs uphill.
There is some extra parasitic drag due to the magnets inside, so a little power
is always desirable. Range is very good, though, 30-70km depending on model.
A local company has an even more powerful kit (and more expensive)
http://www.greenspeed.us/tidalforce_electric_motor.htm
Ray
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