Dc 100v 25a

1134 Views 1 Reply 2 Participants Last post by Yabert, Feb 25, 2011

bgoner

Discussion Starter · Feb 25, 2011 (Edited)

I got this old DC motor which should be 100V X 25A = 2.5kW ... which is about 3HP.

I read somewhere that for each 1000lbs you need 6-8hp. My car would be around 2200lbs - so minimum of 15hp.

My first gear ratio is about 1:10 and my 4th gear is about 1:3 (opel corsa 88').
Does that mean that in first gear I could have 3HP X 10 = 30hp?

or am I mixing torque with power?

I don't need the car to go beyond 35mph, it would be prototype for city use. Ment to learn from the project. Is this motor suitable?

Save

1 - 2 of 2 Posts

Yabert

· #2 · Feb 25, 2011 (Edited)

bgoner said:
My first gear ratio is about 1:10 and my 4th gear is about 1:3 (opel corsa 88').
Does that mean that in first gear I could have 3HP X 10 = 30hp?

Hi

You can't have more HP with ratio. Only torque change when you change ratio.

3HP @ 1000 rpm = 15.76 lbs-ft of torque.
3HP @ 100 rpm = 157.6 lbs-ft.

Save

1 - 2 of 2 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month