Hello Rich, Its a 4QD unit, their "Uni" controller. The motor is shunt wound, but I grabbed the reversing contactors when I removed it from the stacker truck so reversing is not a big issue. I haven't looked closely at the alternator, I got it from a lorry scrapyard and was only too pleased to find that it worked! If I get a chance I'll have a look, but I don't remember anything obvious. Cheers Peter On Wednesday, March 30, 2005 12:14 PM, R.L. Roebuck [SMTP:rlr20@xxxxxxxxxxxxx] wrote: > 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 > alternator? > > > Yours, > > > Rich. > MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.