G'day Guys,
Am working on tuning some SCX COT cars for a class here (Home Racing).....
Initially I was just going to swap out the RX-41's a couple of the cars came with for RX-42B's.
Then I thought I'd chuck in a new RK-42 I had left over from a Cuda project (thank you H, I'll make use of the stock motor here now!)....
I ran the RK-41 against a stock 42B to see what lap times were, the chassis is still stock that I did the runs in. 2.5 with the 42B and 2.6 with the RK-42.
It was slower BUT, the new RK-42 seems to produce a mile of torque, it was breaking traction a lot with the stock SCX tyres. I think if I can get it to hook up it will fly!
The RX-42B ran 8800RPM at the rear wheels, the RK-42 turned in 8200RPM. Not a lot but the torque factor I cant measure.
I was over at Robert Livingstons motor list the other night, he has tested some really good torque figures for the newer SCX motor....
Maybe this newer motor will be a killer on the Home tracks many of us race on?
About the only thing I didnt like about the new RK series motor was the dicky brush set-up, its really flimsy (although it should be a snap to get equal tension on the brushes).....
I'll see how it all goes over the next few days :)