Electric Motor

[espookid]

I have been given a 24v motor from a scooter and the idea is to make an electric spit to fit over the b-b-q
I have 12 volt batteries but I want to know what the problem would be if I used just one to reduce the speed and would it be possible to slow it even further or is it better to pick up a windscreen wiper motor instead

[beso]

It will go at half the speed. The speed is proportional to the voltage and the torque is proportional to the current.

Gearing reduces the speed but increases the torque by the same factor.

The windscreen wiper motor has the gear advantage.

[rojash]

Wouldn't it be easier to buy one?
http://www.gardenxl.com/dancook-barbecue-spit-motor-5-volt?gclid=CJ3Qlaq9sLQCFebLtAodrBEA8A

[ChuckFickens]

A 24v motor driven at 12v and connected directly to the spit would be fun to watch!.... see a chicken spinning at approx 1500RPM would be entertaining even if not very effective at cooking it. you'd need to have a gearbox with a reduction ratio of about 500:1... or to put it another way, assuming a on stage gearbox with a 10 tooth gear on the motor you'd need a rather large 5000 tooth gear on the spit to bring it down to a usable speed (it would have huge amounts of torque though, you'd never be able to stop the chicken spinning!)

[espookid]

well thanks for the answers yes I love to reinvent other peoples waste but realistically it would e best to ROJASH'S motor because the extra bits I need to find or buy make it a bit pointless
My next project is ---------
Thanks

[bestmilfordlock]

Electric motor is the best invention done in 21st century.its according to you to use motor and batteries according to requirement.[url=http://en.wikipedia.org/wiki/XRumer]wikipedia[/url]

[bestmilfordlock]

electric motor is one of the best inventions in the 21st century.you can use motors and batteries according to your requirements.wikipedia

[rojash]

"electric motor is one of the best inventions in the 21st century"

Blimey! I've been living in the future.