I'm running out of places - and people - who have enough understanding of the questions I am asking. Please help!
I'm building a crab/shrimp pot puller. I've seen the regular production models and a few home built versions. What I don't understand is how a 12v PMDC 90:1 worm drive motor can be rated at 2.3hp. As far as I can tell, it looks to be the same motor I'm planning to use, and mine is a 12v 600w 60:1 worm drive that is rated at 0.8hp.
I'm told that my motor can be increased to 48v. Other than the 90:1 gearing, I don't see how they can claim a 140' per minute pull of a 200lb weight on a 90:1 ratio of a motor speed of 3600rpm,with a drive pulley of about 12". Doing the math:
3600/90:1 = 40rpm at the drive pulley. 1'(12") x 3.14 x 40rpm = 125.6' per minute ....without load. Is this even possible?
Can I create more HP if I increase the voltage to 24v? And if so, would increasing it to 48v give me the 2.3hp their motor claims to have. Can I do that with a 900w PMDC motor?
Moreover, is it even possible to create 2.3hp from a 12v supply, especially if the motor is in a 3" x 4.5" housing?
Is the 2.3hp a rating of the actual motor or what is coming off the drive shaft?
I installed my 12" (11" internal diameter) drive pulley on, turned the motor on, and I cannot stop it. I'm guessing this will be more than adequate, ...but feel I am missing something.
Thank you in advance.