This motor works well as a replacement/upgrade in the ELF solar e-bike. It fits in ELFs that originally had the geared MAC motor (model years 2013-2015). If your ELF originally had the TDCM direct drive motor (made in ~2015-2019), we recommend this motor instead.
"GMAC Clutchless Geared Hub Motor, 8T (10.2 rpm/V) Winding. This motor includes an internal 6-pole speedeometer sensor so it can use a CA-DP device and not require an external speedo pickup. Includes 3 piece CNC'd torque arm with inner spline made from 7075 alloy. For more details see the GMAC Info Page
|Actual Weight (kg)||3.82|
|Motor Power Range (Watts)||600-1200|
|Motor KV (RPM / V)||10.2|
|Phase Resistance (Ohm)||0.046|
|Disk Brake Compatible||Yes|
|Axle Length (O.L.D.)||138|
|Spoke Holes||36 Hole|
|Flange Spoke Diameter (mm)||173|
|Magnetic Pole Pairs (Phaserunner)||80|
|Speedo Poles (for CA)||6|
|Hysteresis Losses (N-m)||1|
|Eddie Losses (N-m / rad/sec)||.013|
|Motor Inductance (H)||.00014|
^ Above information provided by Grin Technologies, the supplier.