I have been wanting to put together a small scale hydro generator but have not found a suitable motor until maybe now. In cleaning the office I was about to toss an old blueprint machine (Bruning PD101) and noticed that the drive motor was listed as a DC motor. Here are the specs from the motor
RAE Corporation
90V DC 38rpm
0.47 amps 50inLbs Torque
model 241839 date J88
I marked the first gear off the gearbox and noted using the variable speed setting of the machine the rpm varies from 4 to 50rpm. If it is not suitable I will be donating it in whole so I haven't tried to take it apart yet to see the resistance by hand to spin.
I know I will need to calculate flow and head eventualy but until it's not frozen that will have to wait. Just looking to charge a small 12V system for the cottage used on the weekends.
Thanks.