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HI all

Just for fun, what has been your all time favourite mod car, and why ?

SCX Cadillac Le Mans:
Mine for example, was an old SCX Cadillac Le Mans car with boxer style Reprotec torque motor. I will have to go check the gearing, but this thing was a rocket out of every corner. I didn't have much handling yet, but the car could compress time between each corner it was so fast.

I removed all play from all the axles, slipped in a half size round Ninco magnet just behind the front axle, and kept the std. small bar magnet below the pinion gear.

This has been my single most fun car ever. I eventually wore out the rears completely !

Best regards

Trevor
 

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Russell Sheldon
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2,855 Posts
I have a very quick Ninco Opel Calibra, non-mag car. Quick, easy and cheap mods; pretty much standard stuff. Opened the motor and advanced the comm timing by gently twisting it about 2 degrees, slightly increased the tension of the brushes, ran in the motor for a few seconds under water, blew out the muck, glued the motor into the mount, glued the motor mount screws to the chassis, glued in the bushings, selected straight axles, sorted out the end-play, slightly lowered the front end of the chassis by shaving the guide "tongue", sorted out the guide wobble, glued and trued the tyres, loosened up the body mounting.

Kind regards

Russell
 

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I forgot about that trick with the comm russell ;-) cheers.

my mod car? vectra, still more to come from that, lacking grip - severly, powersliding it out the bends last night, when i had got used the the 35k+ rpm with 8/28 gearing !! did I mention the magnut sits on the rails almost?

Rob
 

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Russell Sheldon
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2,855 Posts
Hi John

Yes, I run-in all my motors under water. This method of seating the brushes is commonly used and recommended by most motor builders, including top builder Monty Ohren of "Best O' the West" (Big 'O' in the good old days of Pro racing).

Running the motor in under water "seats" the brushes on the comm quicker. The water also lubricates the brushes and virtually prevents them from arcing during the break in period. Arcing does of course damage the comm. I find that with most "stock" motors, 30 seconds of running at 3 volts under water is sufficient.

After running the motor under water, clean it up with lighter fluid and spray it dry with compressed air. Don't forget to lightly oil the bearings before running the motor again. If you've taken these motors apart, you will know that the brushes are really tiny and attached to beryllium copper "arms" and are not replaceable. Running-in the motor, under water or otherwise, reduces the amount of brush and therefore the life of the motor, so don't overdo it.

Kind regards

Russell
 

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scaley beetle chassis running under a bus body
nope actually did this, cut the chassis in half and extended it
i will be doing more mod work on a car soon.... just wait!!!!
 

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well... ive been working on my single seater ttoday and its running sooo much better now even on my crap controller, i put bearings on the front and lightened the body and chassis slightly. one question. do you think that a slot it proaxel would be good for it?
 
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