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Forum topic by WVshooter posted 02-03-2018 04:55 AM 1496 views 0 times favorited 7 replies Add to Favorites Watch
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WVshooter

8 posts in 1542 days


02-03-2018 04:55 AM

Hi, all. Last I posted, I was debating on bringing home a nonworking Dewalt DW746 for the fine sum of my time and gas for a 45 minute trip. It came home, and I traced the issue down to a bad start capacitor. Hooray, me! At 1 3/4hp, I have been pretty happy and so I thought I had as good a table saw at the heart of my shop as I intended to find. Fast forward to today, and you will find, right next to it, the Powermatic 72A I bought for a song. This one is a 3 phase, 7.5hp 14” saw that Powermatic says was one of the very last 72A’s and rolled off the line in 2005. I’ve got both short cast iron wings and the 52 inch fence rails with an Accufence sitting on top.

The wheels are pretty stiff to crank, and the wings need re-aligned. It is missing the dust clean out door, and one spinning crank handle, but the top is rust free. I’m looking for any pointers on working on these saws, as well as info on building a rotary phase converter and anyone’s personal experiences with them. Thanks!


7 replies so far

View FancyShoes's profile

FancyShoes

592 posts in 2576 days


#1 posted 02-03-2018 07:25 AM

Its a good saw, powermatic 66 and 72 used the same wheels from what I have seen.

Check out this blog for some tips. These really are not hard to refurbish. Good luck.

http://www.ggober.com/shop/p66overhaul.htm

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FancyShoes

592 posts in 2576 days


#2 posted 02-03-2018 07:26 AM

Also I have a spare handwheel. Pm me if interested

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WVshooter

8 posts in 1542 days


#3 posted 02-03-2018 01:24 PM

Thanks. I will check out the link now. What’s a true fair market price on this saw? I know I got a smokin’ deal, I would like to know how smokin’ it was.

I actually have both wheels, just have to find the grab handle that threads into the rim of the wheel, as well as a handle for the fence.

View Loren's profile

Loren

11251 posts in 4860 days


#4 posted 02-03-2018 03:09 PM

I think you can probably start that saw with
a 10hp phase converter, but that’s right on
the edge of what the converter will do. I know
this because I have a 7.5hp motor on a belt
sander and the converter won’t start the motor
unless the air tension is shut off.

I built mine from a panel I bought from
Phase-craft, an ebay seller. The idler I found
locally on ebay as well.

I expect the saw is worth around $1000. The
power requirements are a turn-off to many
hobby users and many pros would choose
something else these days.

3-phase machinery is fun to buy and use if
you don’t mind moving heavy stuff around.

View Riddle's profile

Riddle

4 posts in 46 days


#5 posted 08-04-2021 11:43 PM

I just picked up a 72TA Powermatic, 3 ph 7.5 hp. In perfect condition, just missing the front panel door a motor cover. Picked up a 7.5 hp vfd off ebay for $173. Going to give it a 2 second ramp up and down to make it super smooth running. I hate the jerk and jump of full on saws. This one wont jump much though at 850 lbs. One thing I am try to find is a manual. I am not sure what the difference is between a 72A and a 72TA. If anyone knows please let me know.

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MrUnix

8747 posts in 3411 days


#6 posted 08-05-2021 02:02 AM

Picked up a 7.5 hp vfd off ebay for $173.
- Riddle

Check the specs on that VFD. Anything over 3HP usually requires 3 phase input. or you need to de-rate the output if using single phase (if even possible, not all can).

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Riddle

4 posts in 46 days


#7 posted 08-05-2021 10:24 PM

I did verify that it will take 1 or 3 phase input. It takes both. A good thing to keep in mind for sure. They had a 10 hp one also that was single or 3 phase input but I didn’t want to have to put it on a 50 amp circuit. I had a unused 30 amp one just looking for something to connect up to it.

Thanks
Scott

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