电车用珠差好还是齿差好

以下是TAMIYA RC GUIDE BOOKS 對滾珠差速的解釋 所以  AMAT 大哥你所說的重量並不是第一考慮的要素喔
THIS IS A UNIQUE DIFFERENTIAL SYSTEM USED ON R/C CARS,A BALL DIFFERENTIAL CONSISTS OF METAL BALLS SANDWICHED BETWEEN TWO PRESSURE PLATES. THE BALLLS WORK LIKE THE SMALL BEVEL GEARS IN A GEAR DIFFERENTIAL, ABSORBING
ROTATION DIFFERENTIAL BETWEEN THE RIGHT AND LEFT WHEELS DURING CORNERING. EVEN WHEN A WHEEL LEAVES THE GROUND ,BECAUSE OF THE FRICTION CAUSED BY THE PRESSURE TO THE BALLS , THE POWER IS TRANSMITTED TO SOME
EXTENT TO THE WHEEL THAT IS IN CONTACT WITH THE GROUND ,THUS A TATAL LOSS OF THE DRIVING FORCE IS AVOIDED.
THE PRESSURE CAN BE ADJUSTED BY TIGHTENING A SCREW ,AND ADDING SPACERS OR WASHERS ETC. TOO LITTLE PRESSURE RESULTS IN SLIPPING OF THE BALLS ,SO THE POWER IS NOT TRANSMITTED TO THE WHEELS