bigdogtech01
Well-Known Member
You will want to get a "narrow" type rotor made for the S&S motor. Compufire has one for around $100.
Why are you replacing it?
If the charging system is working correctly, it will charge the battery at idle...usually around 14 VDC
If the voltage fluctuates a lot at battery when the motor rpm's are changing, then you most likely have a bad rotor or stator. If you not getting enough volts, at least 13 VDC, then you probably have a bad voltage regulator. If over 14.6 VDC, then your voltage regulator is bad as well.
A typical test on a good stator will show around 19 VAC at idle, and climb up around 50 VAC at 3000 rpm. You also want to check with an Ohm meter for any opens to ground in the stator.
Have you had th primary open yet to check the Rotor? Sometimes the front Compensator sprocket nut will loosen up and cause the rotor to fail. The inner splines end up grinding off from the splines on the output shaft of the crank.
I would say, replace what is broken...why spend the money on a high output 3 phase if you don't need it?
Why are you replacing it?
If the charging system is working correctly, it will charge the battery at idle...usually around 14 VDC
If the voltage fluctuates a lot at battery when the motor rpm's are changing, then you most likely have a bad rotor or stator. If you not getting enough volts, at least 13 VDC, then you probably have a bad voltage regulator. If over 14.6 VDC, then your voltage regulator is bad as well.
A typical test on a good stator will show around 19 VAC at idle, and climb up around 50 VAC at 3000 rpm. You also want to check with an Ohm meter for any opens to ground in the stator.
Have you had th primary open yet to check the Rotor? Sometimes the front Compensator sprocket nut will loosen up and cause the rotor to fail. The inner splines end up grinding off from the splines on the output shaft of the crank.
I would say, replace what is broken...why spend the money on a high output 3 phase if you don't need it?
