Baserunner V6 User Manual
Rev0
The start of the Autotune process asks for your best guess of the motor’s kV in
rpm/V, as well as the number of pole pairs in the motor. The firmware uses these
initial parameters for determining the test current frequency.
The Autotune routine will usually work fine even if your initial guess for the kV
value is incorrect. Most ebike hub motors fall within 7-12 rpm/V and an initial
guess of 10 will usually work.
The effective pole pairs is a count of how many electrical cycles corresponds to
one mechanical revolution of the wheel and must be set correctly. The
Baserunner V6 needs this information to correlate it’s electrical output frequency
with the wheel speed. In a direct drive (DD) motor, it is the number of magnet
pairs in the rotor, while in a geared motor you need to multiply the magnet pairs
by its gear ratio. The following table lists the effective pole pairs for many
common motor series.
Table 1: Effective Pole Pairs of Common DD and Geared Hub Motors
Motor Family # Pole Pairs
Crystalyte 400, Wilderness Energy 8
Crystalyte 5300, 5400 12
TDCM IGH, TSM-A5 16
Crysatlyte NSM, SAW 20
Grin All Axle, Crysatlyte H, Nine Continent,
MXUS and Other 205mm DD Motors
23
Magic Pie 3, FH/RH212 26
Bafang BPM, Bafang CST 40
Bafang G01, MXUS XF07 44
Bafang G02, G60, G62 50
Shengyi SX1/SX2 72
eZee, BMC, MAC, Puma, GMAC 80
Bafang G310, G311 88
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