[modeleng] Re: Topsy - to charge and how to charge, that is the question!

  • From: "R.L. Roebuck" <rlr20@xxxxxxxxxxxxx>
  • To: "'modeleng@xxxxxxxxxxxxx'" <modeleng@xxxxxxxxxxxxx>
  • Date: Wed, 30 Mar 2005 12:14:29 +0100 (BST)

Hi there Peter,

Can I ask - how are you acheiving motor control in all of this. Do you
have a PWM unit lined up such as 4QD supply, or are you thinking of using
a large resistance, or something else?

Also, do you have any details from the makers/ratings plate on the



On Wed, 30 Mar 2005, Peter Sheppard wrote:

> John,
> Thanks for that.
> I note the use of the diode, but shouldn't it be the +ive terminal to the
> battery ? (the pointy end!)
> With regard to the petrol/electric bit, my main concern is that when the motor
> is pulling serious current (it limits at 96A on 24v dc) then the alternator
> will try and fill that gap (or at least it will try until it current limits).
> I only have a 3/4 hp petrol engine driving the alternator, so I have visions
> that it may stall.  The only thing I suppose is to try it.  I have no idea 
> what
> the maximum charge current of a 24v alternator is - any suggestions?
> Cheers
> Peter

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