gunrunnerjohn posted:Well, you don't need belt drive for that. My VL-BB pulled 70 cars and seemed it could handle a lot more if I was so inclined. The is a point of diminishing returns with the gear ratio. Something around 26-28 to 1 would be about right. If the gear ratio gets much higher than that, you start having a whole new set of issues.
I did a couple of Williams brass steamers with 44:1 gearing. Once you got past around 30 scale MPH, the motor was starting to really create some noise. The scale speed topped out around 44-45 scale MPH at 8,000 RPM of the motor, and you could REALLY hear the motor. I will allow for most running, the 30 scale MPH would probably be fine for me, but it's just the idea of being "limited".
Yeah i understand. I just like the concept of the belt drive. and there is some reduction. Not sure the ratio. There are always extremes one way or the other with gear reduction. just need the right balance. Why hasn’t this industry embraced brushless motors? they produce higher torque, smaller in size, higher rpm and quiet.
