The concept should be valid and I'm willing to pioneer the use of small
motors if no one else has, but I thought for sure given the price
someone would have already tried it. Maybe I should look at an eBike
forum. Those enthusiasts seem to be more price sensitive and individual
motor output is better suited to a bicycle. Try getting a 260v battery
pack on a huffy though....
What is the general feedback on the treadmill motors? My DC motor
experience is thin, so a more experienced opinion would be great. My
feeling is you get what you pay for, so I'm hesitant. For $50-60, they
are cheap enough and easy to replace that a failure here or there is no
big deal, but it would suck to have them go out every couple of few
weeks or to have 3 fail all at once when I gave her a bit of juice to
execute a lane change or get up a hill. Here are some examples:
http://tinyurl.com/2uofgq
(http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=250177184833&ssPageName=STRK:MEWA:IT&ih=015)
http://tinyurl.com/37dkx6
(http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=220161776122&ssPageName=STRK:MEWA:IT&ih=012)
Seth
lyle sloan wrote:
IF you have the room and the means, try it. We'll use
you as the reference. In fact not too long ago on the
evdl, a member used a bunch of ETEKs to propel a VW.
(Sorry, I dont have pics) So if that can be done so
can your idea.
If they are simple PM DC then you dont have to have a
controller for each but a way to balance them in
parallel. Or just hook them up and see if they can
take the load without one motor shorting. Combined
with serial-motor-switching, it should be interesting.
--- "Seth A. Keel" <[EMAIL PROTECTED]> wrote:
I have 2 eteks and a D&D ES-33 that a friend let me
borrow. A single
etek fit perfect, but it's pushing a '75 Gold Wing
and probably will be
underpowered. The pair of eteks fit, but it's real
tight and will take
a lot of extra work to make it work. The D&D fits
too, but is longer
than I would like. So any of those options would
work, but are not ideal.
What I'm wondering is... has anyone built a
successful bike using 6 to 9
smaller PM DC motors? The small treadmill 2-3hp
ones I've seen look
cheap and I doubt they are as strong as they are
rated, but would they
work if you had enough of them? What are the
primary reasons to not use
them? And would a separate controller be needed for
each?
Thanks,
Seth
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