Originally Posted by SuPerDraGon
Nipple,
Basically the eddy current dyno is similar to our brush motor. If you remember Tekin dyno introduced >10yrs ago or Competition electronics,
they make use of a secondary motor to measure the Test motor.
Base on the rpm and current/voltage induced, they are able to give you a quite accurate data.
If you need a fixed mass dyno for DC motor, I can lend you my Fantom motor dyno.
I think the eddy current used in "proper dyno" is to generate electromagnetic braking thus creating the load. Then also got hydraulic braking ones rite?
CE's turbo dyno measure actual torque from load cell.
But the Tekin one.........also got slave motor as load. But it's power measurement I think is based on p=vi.
then power in - power loss = power out.
then from power = torque x angular velocity to determine torque.
So when slave motor condition changed, the calulated power also change despite the test motor's performance is constant.
Can find pple selling Tekin ones on ebay....but I'm not very interested.....
Correct me if I wrong.
BTW, why u buy fantom one, don't buy robitronic one?
Alvin Yap (Not the Alvin Yap playing F103 now) bought one from Wui Kiat last time, dunno if he still has it with him......