Hi guys,
Proud new owner of a lovely G4B with lots of original goodies.
The only thing is - it's a 3ph motor, and I've only got a 1ph supply.
The choices are:
-Static converter: available on eBay for $70 shipped, and requires no rewiring of the saw...but cuts available HP to 2/3 of nameplate rating.
-New Motor: any suggestions on a direct-fit replacement for a G4B
that will mount on the existing holes and have the right form factor?
Cost is a bit of a factor, as is time required to change over if there's a new motor involved - unless it's a pretty direct replacement, the time to change over the motor and rewire the saw would be a definite downside.
Looking forward to any suggestions - thanks in advance!
Martin
G4B Motor - change 3PH to 1PH, or static converter?
Moderator: crzypete
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keithguitars
- Posts: 4
- Joined: Tue Feb 15, 2011 3:22 pm
- Location: Upstate NY
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Martin, an old adage comes to mind. "quick, cheap and good, you can have any two"
The static converter is quick and cheap, but not very good- too much loss of power on an already underpowered machine.
A properly sized motor- you match the frame number, this would be quick and good, but definitely not cheap- the frames are odd sized and matching them costs money.
Adapting another single phase motor to fit, this would be cheap and good, but not particularly quick.
For me good is a necessity, so I'd rule out the static converter. Also, a VFD would not please me in this situation, so if I didn't have a rotary converter, I'd look for a single phase alternative.
The properly sized motor would not fit well with me as I believe they cost some major dinero to properly size the frame to match the existing one. I am going off a friends story, so perhaps I am wrong on this solution. If you price up the motor, please report back with an actual number.
My choice would be option number 3, adapt up any old motor. A quick adapter plate makes short work of this task and then you are good to go. Not the fastest route, but to me the best alternative.
Pete
The static converter is quick and cheap, but not very good- too much loss of power on an already underpowered machine.
A properly sized motor- you match the frame number, this would be quick and good, but definitely not cheap- the frames are odd sized and matching them costs money.
Adapting another single phase motor to fit, this would be cheap and good, but not particularly quick.
For me good is a necessity, so I'd rule out the static converter. Also, a VFD would not please me in this situation, so if I didn't have a rotary converter, I'd look for a single phase alternative.
The properly sized motor would not fit well with me as I believe they cost some major dinero to properly size the frame to match the existing one. I am going off a friends story, so perhaps I am wrong on this solution. If you price up the motor, please report back with an actual number.
My choice would be option number 3, adapt up any old motor. A quick adapter plate makes short work of this task and then you are good to go. Not the fastest route, but to me the best alternative.
Pete