Here is the data sheet.
Where in the datasheet did you see this info? Is CEMF (BEMF?) directly proportional to magnet strength?I can rig up plastic shaft coupler to my cordless drill for a quick test. I got 14 days to return it.Measure the line to neutral CEMF. According to the datasheet, it should be close to 335V at about 3000 rpm.
Field strength affects both Torque/Amp and Volts/RPM so you can measure either one.Is CEMF (BEMF?) directly proportional to magnet strength?.
It's in the speed vs torque graph test data.Where in the datasheet did you see this info? Is CEMF (BEMF?) directly proportional to magnet strength?I can rig up plastic shaft coupler to my cordless drill for a quick test. I got 14 days to return it.
Taking the no load generated voltage is the way to check flux level. However it is an AC signal so would be Vdc/√2, RMS. Better yet, put a scope on it and check the peak. And use line to line for the phase voltage. Neutral is unlikely to be accessible. Or connect the phases to a bridge rectifier and filter cap. That will then read the DC voltage.Measure the line to neutral CEMF. According to the datasheet, it should be close to 335V at about 3000 rpm.
I got nice scope to try this on.Taking the no load generated voltage is the way to check flux level. However it is an AC signal so would be Vdc/√2, RMS. Better yet, put a scope on it and check the peak. And use line to line for the phase voltage. Neutral is unlikely to be accessible. Or connect the phases to a bridge rectifier and filter cap. That will then read the DC voltage.
This means that I will either have to heat the coupler to press it on or shave down the motor shaft a bit.
Would it be possible to pull the coupler off the shaft later using bearing puller tool? I would like to be able to try different motor coupling methods.In the description they say to heat the coupler to 300-some degrees and press it over the motor shaft.
No. Interference fits are permanent.Would it be possible to pull the coupler off the shaft later using bearing puller tool? I would like to be able to try different motor coupling methods.
CoolFound the way to get exact shaft speed. I placed the microphone next to spline shaft and rubbed piece of plastic against spline teeth.
Thankswow! nice workbench! how did You used the audio mixer?)))))