dc motors questions

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Hello-
I am working on an electric skateboard project, and am having trouble
with a few things.
I have 2 12V motors rated at 10,000 rpms so I am assuming they are
series wound. I am wondering if it's possible to wire these motors in
series so that I can use a 24v speed control, which is really
inexpensive on ebay. Also, most of the 24v controllers use a Hall
effect throttle, but can that be used on a motor that doesn't have
hall effect sensors? I picked up these motors at American Science &
Surplus for 7 bucks each, I've connected them to a 12v battery and
they run great, but now I need to control the speed. I'm not the
brightest guy around but I'm not quite stupid either...
Any help is appreciated.

Thanks!

 

[John Popelish]

Hello-
I am working on an electric skateboard project, and am having trouble
with a few things.
I have 2 12V motors rated at 10,000 rpms so I am assuming they are
series wound.

My guess would be permanent magnet field. Do the cases
attract a screw driver with a permanent magnet field, when
the motors are unpowered?

I am wondering if it's possible to wire these motors in
series so that I can use a 24v speed control, which is really
inexpensive on ebay.

It might well be possible. But if they don't turn at the
same speed, they will not divide the total voltage, equally.
That is not necessarily a bod thing, since they will
produce nearly equal torque. This acts sort of like two
wheels connected by a differential gear.

Also, most of the 24v controllers use a Hall
effect throttle, but can that be used on a motor that doesn't have
hall effect sensors? I picked up these motors at American Science &
Surplus for 7 bucks each, I've connected them to a 12v battery and
they run great, but now I need to control the speed. I'm not the
brightest guy around but I'm not quite stupid either...

I am not familiar with a hall effect throttle.

 

[Homer J Simpson]

I am working on an electric skateboard project, and am having trouble
with a few things.
I have 2 12V motors rated at 10,000 rpms so I am assuming they are
series wound. I am wondering if it's possible to wire these motors in
series so that I can use a 24v speed control, which is really
inexpensive on ebay. Also, most of the 24v controllers use a Hall
effect throttle, but can that be used on a motor that doesn't have
hall effect sensors? I picked up these motors at American Science &
Surplus for 7 bucks each, I've connected them to a 12v battery and
they run great, but now I need to control the speed. I'm not the
brightest guy around but I'm not quite stupid either...
Any help is appreciated.

It might be easier to reconfigure the controller to 12 volts. Or buy the
right thing from http://www.kbelectronics.com/ or similar.