I want to use atleast 300rpm and minnimum 25kgcm torque motors, where will i get them ? can any body suggest me , i want them in very cheap rates. need to use them as drive motors.

Where are you located?

What size weight etc, could be heaps of different motors!
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It will also help to know what your battery voltage is. 25Kg/cm is not all that much torque, you can get that from a 550 motor geared down about 20:1. Without knowing all the information, I suggest a 100W scooter motor with chain reduction or a cordless drill gearmotor; they are available at low cost and can deliver the torque and speed you want.

i m in india, and i dont find drill motors so chip, incase anybody can suggest a site which provide just motors for robotics (robowars)

In Australia, drill motors are about the cheapest motors to use. The sort of item I am talking about is this:
http://www.ebay.com.au/itm/ozito-14-4v-cordless-drill-pack-/131096194605?pt=AU_Power_Tools&hash=item1e85f12e2d . Can you find something like that in India?

If they are too expensive in India, then you might be able to get a scooter motor like this:



They run at 2,500 rpm so you will need to gear them down by 5:1 to work in a bot.

http://www.ebay.com.au/itm/ozito-14-4v-cordless-drill-pack-/131096194605?pt=AU_Power_Tools&hash=item1e85f12e2d

The other option is a car windscreen wiper motor. They have plenty of torque but may be too slow. They are also hard to mount wheels to, but you can possibly get them where you got your starter motor.

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Originally posted by anshulmahale1:
I'm in India, and I dont find drill motors so cheap, incase anybody can suggest a site which provide just motors for robotics (robowars)

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