Motor Part number

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Model: PR775AG-7021

The Roth Motor board is powered by two 325 Watt motors that fit into the "Motor Power Sled".[1] The same motors are used for all types of motorboards: 1500X 2000X 2000XR 2000XR+ .

Motors information:

  • 750W (both motors together 1 horse power)
  • high-torque
  • custom twin motors
  • weight: 12oz each

Chopper side (with wheel)

This is the LEFT Motor, looking from the rear of the motorboard. It has an extended shaft which the round black plastic chopper attaches.

Model: PR775AG-7021-97FR-B
0.03 Volts: 18.0V/DC
EXT: 25.0~25.1
(green label, stamped CW , C)

Other side

Non-Chopper Motor Label, marked CCW (Counter Clockwise)

This is the RIGHT motor as seen looking forward from the rear of the motorboard. It does NOT have an extended shaft on it for the black plastic chopper.

Model: PR775AG-7021-90FR-B
0.03 Volts: 18.0V/DC
EXT:24.9~25.0
(white label, stamped CCW , D)

Description

Apparently sold by http://www.promotor-sz.com/

Here's the spec, although it looks like Roth Motors had them custom made with an extra long shaft and motor cone (perhaps added afterwards).

http://www.promotor-sz.com/EnProductShow.asp?ID=694
http://www.promotor-sz.com/pdf/PR770&775.pdf

Both motors appear to be wound exactly the same. Looking from the back, with the word PRO stamped in the metal on the right, both motors will spin clockwise if + is attached to connector above PRO and - to the connector below PRO. The direction of spin of the motor is accomplished by placing a red dot at opposite positions on each motor.

The Chopper Side motor (the one with the wheel has a red dot below and to the left of the word PRO. The connector closest to the dot must be connected to positive/red cable from the Motor Controller.

The other motor has a red dot above the word PRO. The connector closest to the dot must be connected to positive/red cable from the Motor Controller.

Connecting incorrectly will cause the motors to fight each other by spinning the wrong direction and will probably damage the Motor Controller.

External links

References

  1. The Motor Power Sled interfaces with the Motor Control (Pcb) and Brake unit