Excellent read ph2t….the need for speed drives some of us to very interesting discoveries. I also fiddled with a FA 130 motor that came with the TYCO CROSSFIRE, I should add also that the performance sphere I m talking about is in no way comparable to what you geeza’s get up to, however much was learnt. The ‘out of box’ car would wobble it’s way up to a pathetic 6km/h and was immediately junked but the two motors,pcb and shell were retained. After much work a more acceptable vehicle was produced (centrifigal clutch steering is one of it’s virtues) however the motor mods may interest some of you…with 2.4volts and 8to1 reduction it’s on road speed went up to 7.5km/h (were talkin’ crap car speed here) and run time of 40 minutes. The motor’s origin is unknown but probably one of Kowloons finest and would run at a steady 11500/12000 rpm but was unusual in that it is fitted with carbon brush gear and not the copper fingers. A new end casing was made up that allowed the brushes to be advanced from 0 to 30 degrees, also mounting the said brush gear on an adjustable slide enable’s one to raise or lower the contact point on the armature to ensure that they are truly at 180 degrees to each other and finally two eccentrics were squeezed in so that brush pressure could be varied.
This bumped motor speed up to 15000 in forward and 13500 in reverse, acceptable results
I guess with such a plain motor but the big jump came when the car was run on 3.6 volts with 3 AAA’s,motor speed increased to 21000 and on road speedwas lifted to 14.8 km/hwhich is about all an old guy like me can handle…the drawback with this pattern of motor is having one brush leading and one trailing as they both should be trailing.
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