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Thread: Fay & Egan Co. 3 Phase Jointer

  1. #1

    Fay & Egan Co. 3 Phase Jointer

    Question for three phase/old iron folks. I have a 16" Fay & Egan jointer with the original "Lightning Series", 3 HP, 3 Phase motor. I'm running it with a Phase-Matic static converter with three HP capacity. It works fine; no bogging, no dimming lights or popping breakers. It does take 13 - 15 seconds for the motor to reach full RPM once "Start" is pushed. Is this to be expected with this type motor? I have nothing to compare it to.
    Thanks much,
    Tim

  2. #2
    Join Date
    Jun 2008
    Location
    So Cal
    Posts
    2,884
    To me thatís a awfully long time. Bet itís because of the static converter
    Just for comparison my jointer is direct drive 5hp and it takes less then 2 seconds. With a Rpc
    I have patience for woodworking but not my machines starting slowly. I donít like to be kept waiting
    Good Luck
    Aj

  3. #3
    I'm not concerned about the "long wait" but is it doing any damage to the motor? This thing was made between 1925 and 1935 so I'd like to take steps to preserve it if this is a harmful situation.

    Thanks

  4. #4
    I worked for an old guy with a jointer that did that slow roll thing. He said he liked that kind of motor because they lasted a long time.
    I took his word as wisdom on everything regarding woodworking. He was mainly known as an artful turner of crisp and slick work.

  5. #5
    Join Date
    Dec 2005
    Location
    West Lafayette, IN
    Posts
    6,184
    I doubt thereís any harm being done to the motor - 3phase motors are pretty bomb proof.

    But Iíve got a VFD on all my 3 phase machines and appreciate the quick accel and decel times. My 12Ē Northfield jointer and 18Ē Oliver jointer start/stop in 3-6 seconds. Unisaws are even quicker since there is less rotational mass.

  6. #6
    I have a 16" F&E - probably a lot older - with babbit bearings. It is 5hp 3ph on a Kay 10hp RPC and the starting load is such that I have a handle on the motor bracket and lift the motor to slack the drive belts for cold starting.

  7. #7
    I think it depends on your roto. My experience, 10 HP roto heavy start application turning over a 10 HP motor likely a 70 lbs mass or more it was about a second or not more than 2 for full speed.

    10 hp Roto starting 10 HP heavy mass, clearly not all rotos are the same.

  8. #8
    Join Date
    Feb 2011
    Location
    Central WI
    Posts
    5,599
    Even though those old motors are not inverter duty, they have large frames and I'd prefer to run them off a vfd. As others have said, the old motors are tough but a static really isn't a first choice power source. A vfd is about $250. Dave

  9. #9
    not that I need to but ive run 5 machines off the roto at once to test it. Draw was minimal as they somehow act as ballasts for each other. No one has ever talked about cost of running either and comparing.

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