Quincy Compressor Pulley and Hp ??

[Pattonky]

I recently bought an old Quincy compressor, model 106. Everything works and she has a 14" sheave with an approximately 3.5" motor pulley. The info I have been able to find says that this puts the compressor in the low range of the 400-900 operating rpm range. This compressor has an old Dayton 1hp 1725 rpm motor that looks like a "tank." Could I purchase a 7" pulley and go to the high side of the range without incident or would that be too much for this 1hp motor? I am pretty new to this so anybody wants to educate me then please do so. I would love to get this up and going well. Currently wired 120v. If additional info is needed then please let me know.

 

[OccupantRJ]

Use a clamp on amp meter to see what amps the motor is drawing right as the pressure switch cuts it off, then you will have more info for others to be able to input.

 

[Pattonky]

Thanks for response. That makes sense. Determines what load the motor is at when under max load in current setup. Sadly, I don't have such a clamp. I will have to ask around and find someone that has one. Thanks again.