# output power measurement for christmas motor 1.wmv

The idea here , is to show a possibility to measure the output mechanical power of the Christmas motor from Ted at www. hereticalbuilders.com. So i installed a sewingmachine spool on the shaft of the motor. Than i attached a very thin nylon (fishing line ) wire to the spool . Than i hang a weight of exactly 1 newton ( or 102 ,5 grams ) at the end of the wire. Than i installed a ruler of one meter divided all 10 cm along the trajectory of the lifting weight. And i decided to measure only on the length of 0.5 meter, because i want to avoid that the spool gets on a second layer which could trouble the measurement. on the upper stage. So i can calculate with this formula. 1 Newton x 1 meter per 1 .second = 1 watt So as you can test yourself on the video the load needs about 2.6 to 2. 65 second to travel across the 0.5 meter. so the math is 1 N x 0.5 meter X 1/ 2.65 sec = 0.1886 watt. I think that this method is good enough for basic measuremt with this very slow spinning motor. good luck at all Laurent