I agree with Russ. If the "converter" costs $600, that is probably
a greater cost than buying a brand new 220v single phase motor.
A used motor would be even less.
You might see who manufactured the original 3-phase motor and,
if the manufacturer is still around, check to see if there is a direct
replacement as a single phase 220.
Another thought is the actual purpose to which the lift will be
used for. If the lift is rated for a weight that is far above
what you will use the lift for, than you might even get away
with a smaller 2-3 horsepower motor. For example: If the
lift is rated at 8000 pounds and you never expect to put anything larger
than a Triumph (i.e. under 4000 pounds) on it, then a smaller HP
motor should do fine.
One last approach is to go to a hand crank if there is enough
gear reduction in the set-up.
By the way, who is selling these used lifts? Where?
----- Original Message -----
From: "Russ Moore" <email@example.com>
To: "'Bob Kramer'" <firstname.lastname@example.org>; "Russ Moore" <email@example.com>
Sent: Thursday, November 07, 2002 12:50 PM
Subject: Power for a lift.
> I have seen those before, they work pretty well. What are the economics of
> finding a 220volt 4-5 hp motor and using it to power the device. I think
> they're quite a bit (lots) less expensive than the converter. Even if you
> had to alter a mounting plate it would be worth it. Typically a 5-6 HP
> compresser would have just the item I believe. Getting it to work and mate
> with the gear reduction shouldn't be too difficult.
> There are actually some places that specialize in "used" electrical
> equipment. Even a new motor is likely just a couple of hundred dollars
> a place like Grainger. There are better deals than theirs out there.......
> Not a bad price.
> Russ Moore
> -----Original Message-----
> From: Bob Kramer [mailto:firstname.lastname@example.org]
> Sent: Thursday, November 07, 2002 12:13 PM
> To: Russ Moore
> Cc: email@example.com
> Subject: Re: TR4A bonnet hinges
> It's a Werther assymetrical 2 post screw type lift, actually 2 of them.
> Electrical/Mechanical. They are screw driven off one 4 HP 3 phase motor.
> motor sits on top of one post and runs that screw. A driveshaft
> though a raised floor panel runs the other side. The Phase converter
> manufacturers say it will take a 7.5 HP rotory converter ($600) to run it,
> but Werther says other people have tried it and it doesn't work. I can't
> why it wouldn't work, but I don't want to go out and throuw good money
> bad. The lifts were cheap ($850), so the total price is very attractive
> compared to a new lift of the same capacity and features.
> ----- Original Message -----
> From: "Russ Moore" <rem@CBORD.com>
> To: "'Bob Kramer'" <firstname.lastname@example.org>
> Sent: Thursday, November 07, 2002 10:25 AM
> Subject: RE: TR4A bonnet hinges
> > Bob,
> > If the lift is the old "in-ground" hydraulic type, run like hell.