by Audi1 » Sun Jan 21, 2018 6:23 am
If we are going to allow both FC-050 and FC-130 motors to run together in the same proxy race, then I think we need to come close to matching them up on Power. Taking a look at Robert Livingston's New Motor List, as well as some of the manufacturer's specs, allows us to do that; at least to an approximation. No one actually knows how these two motor types will play together in a race and, therefore, the first year would have to be a simple experiment to see what the result was. Having said that, we can try as hard as we can to come close to matching the two on specs.
On rpms, the FF-050 would need to be higher, because on torque it will, definitely be lower.
There's a useful formula that Robert provided that allows us to calculate the Power (Watts) for any given motor:
(Max rpm /2) x (Max torque / 2) /100,000 = Power (Watts)
Based on that, here are some possible FF-050 and FC-130 match-ups, using available motors:
1a. H&R Jack Rabbit (FC-130): Max rpm = 15,364 / Max torque = 146 / Power = 5.6 Watts (12V)
1b. Scaleauto SC17 Tech 1 (FF-050): Max rpm = 21,124 / Max torque = 108 / Power = 5.7 Watts (12V)
Yes, both motors are available.
2a. SCC Tuna (SC-130): Max rpm = 16,000 / Max torque = 90 / Power = 3.6 Watts (12V)
2b. SRP FF-050 (FF-050): Max rpm = 15,760 / Max torque = 83 / Power = 3.3 Watts (12V)
The SCC Tuna motor has not been measured by Robert's procedure. SRP is the motor supplier to MRRC. I have received quite a few SRP motors and they perform very well.
So, knowing that you can never match FC-130 and FF-050 motors perfectly, those may be some reasonable places to start. Of course, if we don't need to use FF-050 motors, then this whole motor choice simplifies immensely.
Allan