Airsoft Canada - View Single Post

MadMax · October 8th, 2010, 02:00

You really need more complete info to make any meaningful comparisons.

Like electrical power (voltage x current), shaft power is the product of two variables: revolution rate x torque.

With a good dyno setup which output torque, rpm you can calculate shaft power and compare it to electrical input voltage x current to determine electromechanical conversion efficiency. If you measured a free running RPM at given voltage (zero torque output) outside the gun to see if you were running your motor at highest power output by measuring the ROF of your gun. Work out the motor RPM by multiplying the ROF by the gear ratios up to the motor. For maximum power output in a DC motor, you'd be running at half the free running RPM of the motor. There's something there at least.

October 8th, 2010, 02:00	#13
MadMax Delierious Designer of Dastardly Detonations Trader rating Join Date: Dec 2001 Location: in the dark recesses of some metal chip filled machine shop	You really need more complete info to make any meaningful comparisons. Like electrical power (voltage x current), shaft power is the product of two variables: revolution rate x torque. With a good dyno setup which output torque, rpm you can calculate shaft power and compare it to electrical input voltage x current to determine electromechanical conversion efficiency. If you measured a free running RPM at given voltage (zero torque output) outside the gun to see if you were running your motor at highest power output by measuring the ROF of your gun. Work out the motor RPM by multiplying the ROF by the gear ratios up to the motor. For maximum power output in a DC motor, you'd be running at half the free running RPM of the motor. There's something there at least. __________________ Want nearly free GBB gas?