bhigdog
Stainless
- Joined
- Jul 20, 2005
- Location
- Eastern PA
I have a home made rpc using a 5 HP motor. I have a 5 HP motor I want to see how it runs. Will I harm my RPC if I briefly try to run the tested motor.........Bob
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I have a home made rpc using a 5 HP motor. I have a 5 HP motor I want to see how it runs. Will I harm my RPC if I briefly try to run the tested motor.........Bob
It may well start and run it, but maybe not if there is much of a load on the motor. Usually 1 1/2 x the HP is a rule of thumb for ordinary loads. For anything that may be harder to start, 2x is likely to be better. Totally stupid loads may require a bigger ratio.
I'm more worried about damaging the RPC. I use caps to start/run the RPC motor. I guess the question is will I blow the caps by an overloaded start. What I'm actually testing is a used 5HP Champion compressor. I'd like to run the compressor pump before I commit to buying a new 5HP single phase motor. Guess I should have said all that first. My apologies. Thoughts/opinions.........Bob
I'm more worried about damaging the RPC. I use caps to start/run the RPC motor. I guess the question is will I blow the caps by an overloaded start. What I'm actually testing is a used 5HP Champion compressor. I'd like to run the compressor pump before I commit to buying a new 5HP single phase motor. Guess I should have said all that first. My apologies. Thoughts/opinions.........Bob
If I do try it the plan would be to have the rpc up and running, then cut in the compressor motor. The compressor tank will be at 0 pressure. I just want to make sure the air pump is functional before I spring for a new and single phase motor. Likely be next week before I can try it.........Thanks........Bob
Great idea. I'd forgotten that every motor in the RPC circuit acts as another rpc. I remember being in a guys shop and he couldn't run his biggest lathe unless he ran his smaller lathe too. Thanks......Bob
I have a home made rpc using a 5 HP motor. I have a 5 HP motor I want to see how it runs. Will I harm my RPC if I briefly try to run the tested motor.........Bob
You probably should have given more details in this first post that the “5HP motor I want to see how it runs” is not just a motor, but actually a motor driving a compressor...
Compressor motors. can have significant startup and run loads on them.
As has been suggested by others, add in other idlers to increase capacity.
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