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Hukshawn
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This for the folk with 60 gal compressors.
What's your average run time from dry to full? And from kick on to kick off. (List the psi's)
And for reference list your compressor HP and cfm's if you have them.
Reason.
I'm a bit of a Victor Frankenstein with compressors. I've built my way from a home made 8 gal up to my current 2 HP 60 gal.
Originally this was a Brunner 2 HP two stage. The head was shot so I traded it for a single stage 2 cylinder. The original 2 HP Robbin's & Myers from 1964, is a TANK of a motor. It's 1740 rpm. Amperage rates it a true 2HP. But it's tired. Short of rewinding it, its had it's day.
Since I swapped the head to the two cylinder I've been playing around with rpms. I use this unit for general shop air and lacquer spraying/pneumatic sanding. So I need high cfm output.
The head runs about 1200 rpm. That's quick... I needed it to be able to keep up to me. But I finished the big furniture refinishing job I needed this brute for, so I can slow things down.
Due to the pulley size to get those speeds, it put that big ol motor under some stress. It would cough and spit before it jumped into second stage then it was fine. But sometimes it would cough and spit for 30 seconds or so before the centrifugal switch had enough speed to kick over. I replaced the caps and over gauged the wire and breaker to give it some more amps but that had limited success. It's a nice old motor and I don't want to kill it.
So, currently, I obtained a Franklyn electric 2HP motor. Seriously smaller than the R&M as modern motors are. Rated for the proper amperage, so it's a true 2HP. But it's a 3450rpm. But starts right up immediately under the compressor load. Again, playing with pulley sizes, with various pulleys I have in the shop the pump is running 1400rpm. Wayyyy too fast. Motor is pulling 20amps running (supposed to be 12a @ 240v) it started to let the smoke out, so I killed it. Gonna reduce the rpms, gonna try to do down to 770rpm, which is pretty slow for this pump, but I gotta get those amps down.
So, since I have zero reference to average fill times, I'm having a hard time finding that butter zone. The rpm won't dictate the butter zone, but it'll give me an idea if I'm running too fast or too slow based on your input with stock compressors.
I realise modern compressors are **** and I'm going to have to sift through the information and pick what I think is best.
Modern compressors do not list the true HP. They list pipe dreams and complete lies. But let's hear what you got.
And that's a tallboy beer. Lol. Huge motor.
What's your average run time from dry to full? And from kick on to kick off. (List the psi's)
And for reference list your compressor HP and cfm's if you have them.
Reason.
I'm a bit of a Victor Frankenstein with compressors. I've built my way from a home made 8 gal up to my current 2 HP 60 gal.
Originally this was a Brunner 2 HP two stage. The head was shot so I traded it for a single stage 2 cylinder. The original 2 HP Robbin's & Myers from 1964, is a TANK of a motor. It's 1740 rpm. Amperage rates it a true 2HP. But it's tired. Short of rewinding it, its had it's day.
Since I swapped the head to the two cylinder I've been playing around with rpms. I use this unit for general shop air and lacquer spraying/pneumatic sanding. So I need high cfm output.
The head runs about 1200 rpm. That's quick... I needed it to be able to keep up to me. But I finished the big furniture refinishing job I needed this brute for, so I can slow things down.
Due to the pulley size to get those speeds, it put that big ol motor under some stress. It would cough and spit before it jumped into second stage then it was fine. But sometimes it would cough and spit for 30 seconds or so before the centrifugal switch had enough speed to kick over. I replaced the caps and over gauged the wire and breaker to give it some more amps but that had limited success. It's a nice old motor and I don't want to kill it.
So, currently, I obtained a Franklyn electric 2HP motor. Seriously smaller than the R&M as modern motors are. Rated for the proper amperage, so it's a true 2HP. But it's a 3450rpm. But starts right up immediately under the compressor load. Again, playing with pulley sizes, with various pulleys I have in the shop the pump is running 1400rpm. Wayyyy too fast. Motor is pulling 20amps running (supposed to be 12a @ 240v) it started to let the smoke out, so I killed it. Gonna reduce the rpms, gonna try to do down to 770rpm, which is pretty slow for this pump, but I gotta get those amps down.
So, since I have zero reference to average fill times, I'm having a hard time finding that butter zone. The rpm won't dictate the butter zone, but it'll give me an idea if I'm running too fast or too slow based on your input with stock compressors.
I realise modern compressors are **** and I'm going to have to sift through the information and pick what I think is best.
Modern compressors do not list the true HP. They list pipe dreams and complete lies. But let's hear what you got.
And that's a tallboy beer. Lol. Huge motor.