[ausev] Souping up a small dc motor

[Brian Lasseter]

On Mon, Jul 7, 2008 at 1:05 PM,  <evehicle4me at hischopsticks.org> wrote:
> I just bought a Dahon folding bike.  I really enjoy riding it but
> already am thinking of ways to add a small motor to the bike.  There
> is a space within the frame that will accommodate a motor that I have
> found but it is only 24 volts/200+ watts.  Is it possible to rebuild
> this motor so that I can run 48 volts through it (and still get a
> typical service life out of it)?  The motor will drive the rear wheel
> through a chain.  I know I will need a different controller for it but
> controllers for 48 volt motors are pretty easy to find.


Well... you can buy 24 volt controllers easy enough if you are stuck
on your 24 volt motor.   Like the Curtis 1210:
http://curtisinst.com/index.cfm?fuseaction=cProducts.DownloadPDF&file=50123RevBcolors%2Epdf

Alternatively, if you program your 48 volt controller to be nice, and
not punch the amperage to get your bike up to 60mph... then it may
work fine.   (I'd test it a lot though.)


> I am hoping to get at least 500 watts into that space - 600 or 700
> would be idea.  yes...I know, if it had wings it would fly :)

A flying bike... I'd like to see it when you finish that project.
(Also, I suspect you mean "watt-hours of batteries into that space".
The Curtis 1210-24XX can routinely give you 480 watts of power for an
hour, and it's not a big controller.)


-- 
TTFN,
Brian "Lasso" Lasseter

 · (512)736-1677 · AIM:digininja · ICQ:2238123 · MSN:azoreg ·
"No Sane man will dance." -Cicero (106-43 B.C.)