White Paper Discuss: Nothing But Dewalts

[Ryan Foley]

Originally Posted by jimfortytwo

My notes say the advertised output torque for the 18V XRP drill is 500 inch-pounds = 56Nm. The stall torque of the CIM (at 107A) is 2.2Nm. So the CIM put through the 46:1 reduction of first gear represents a 101Nm output, or just about twice the number DeWalt puts on the box

Just a note, the CIM assembly involves dropping the first stage of the transmission, so the gear reductions on the CIM assembly are 3:1, 4:1, 12:1. The CIM puts out .79Nm at 40A (which was the amp limit last year) so after the 12:1 gear reduction, the whole assembly puts out about 9.5Nm (assuming I did math right of course!).

Great paper Joe, thanks for posting it. Hopefully more teams can have shifters with this method, since it is so much easier and cheaper than building one from scratch.

Edit: Jim, I believe that Andy Brockway and Team 716 were the people trying out the XRP transmission with the FP and Bosch motors linked.