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Discussion Starter · #1 ·
hy i,ve just reired my track to club specs, positive polarity. i,,ll try to explain the problem. viewed from me standing in front of a straight. press the trigger the cars go left. put a lightbulb tester on the - side of psu and furthest track rail and when i push the controller it lights up..... so i presumed the furthest rail was the +. problem is when i put just a motor leads on to the track, red from motor to farthest rail and black from motor to the nearest rail, the motor runs backwards when i press the trigger,and the light is still on to the farthest rail, which i presumed was the red to the motor.will any one explain it to me. john
 

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Discussion Starter · #5 ·
zendragon, thanks for trying to be helpfull, but i had a hard time understanding what you where getting at. i know the majority of motors run CW, unless you can see which way the timing advance is,check em on a speedo and see which direction is faster.offhand i can only think of 2 motors which run CCW, the falcon 2 and the proslot euro motor with an american arm. my problem is,? useing a slot it motor and leads, the rail that lights up when i press the controller seems to be negative. so placing the red lead from the motor on the piece of lit track and the black lead to the other rail, causes the motor to run CCW taking the motor to the psu and applying power, it runs CW, so its not as simple as crossing the motor wires as the track seems to power the motor from the negative rail. which if its right, will damage all my motors with any advanced timing. ive been over the wireing diagram a dozen times, and it seems okay. so whats the next step. john
 

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Discussion Starter · #7 ·
i used the wireing diagram from a recent forun topic and chris frost. i put DPDT switches in the circuit to reverse travel, curtesy of old weird harold. but the problems the same. the rail that lights up when you press the controller doesnt feed the motor. its the unlit lane that supplies the right power to spin the motor CW. john
 

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Discussion Starter · #12 ·
i,ve cheched it and the wireing is correct positive polarity. i just have to change the motor wires over to make the motor spin cw and travel in the right direction.. still dont under stand why! if i put the positive lead from a motor onto the poitive track rail it spins ccw, such are the vagaries of life for an electrics moron. thanks for your help. john.
 

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Discussion Starter · #14 ·
all? the mainstream cars are wired for reverse polarity tracks, so i,ve only got to reverse the leads from pick up to motor to make them run right. same for scatchbuilds, all the newer motors, slot it, nsr ect have a red spot on the poitive side of the motor teminal so no problem there. the few motors that i do have, that spin CCW are the only ones that the axle gear has to be reversed, so the advance in timing works right.. the majority of slower cars have neutral timing and no red spot, so there okay as long as the motor leads propel it the right way down the track. i think ive got it all sussed out now thanks to your help. by the way i,ve got that chinese dimmer switch and the DPDT switches in and it all works a treat. i was racing the grandson all afternoon on very low voltage and he beat me loads[he,s 3 yrs old] its his first question coming through the door, are we going to race our cars today. so i must be doing some thing right. he has the magnet cars and i run without, to even it up a bit. john
 
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