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Forum topic by joesf posted 439 days ago 1039 views 0 times favorited 11 replies Add to Favorites Watch
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joesf

25 posts in 493 days


439 days ago

I have an old powermatic model 66 that I am thinking of getting and fixing up. It is green. It is in good condition with just some rust from about a year of neglect. It has the old style round rails on it. It also has the big extensions to give a much larger table to the right of the blade. How good or bad is this fence system to use and are there any special considerations I should note in using it? I am trying to figure out how much I am going to have to put in the saw if I get it to make it a good saw. It is 3 phase so I know I am gong to need a converter and that is about $400.


11 replies so far

View a1Jim's profile

a1Jim

112002 posts in 2182 days


#1 posted 439 days ago

I’ve seen some old Delta’s with the round style fence and they both had dented areas that did not allow the fence to lock down properly, I don’t know if all of the old style fences have this problem in time or not . If you end up replacing the fence and buy a converter it seem like your going to be into this saw $800-$900 it seems you could find another PM66 that’s close to that price with a good fence and single phase motor. I have had a PM66 for 20 years and it’s a great saw.

-- http://artisticwoodstudio.com Custom furniture

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Jerry

2167 posts in 2151 days


#2 posted 439 days ago

We just sold an older model pm66. But not before I could steal the old style fence with round pipe rails. We use the fence daily on another saw and it works great for us. We have the long rails so we can cut about 50” to right of saw.

I have a motor source that can get u a replacement single phase motor, 3 hp leeson for around 340.00 plus shipping. Then u would have a brand new motor or u could always get the converter and work with the old motor. I just bought a 4 hp leeson for our grizzly ts.

-- Jerry Nettrour, San Antonio, www.topqualitycabinets.net

View toolie's profile

toolie

1724 posts in 1233 days


#3 posted 439 days ago

i refurbbed a ‘72 unisaw with an OEM fence system similar to yours. it’s a much maligned system but was parallel and stable when set up properly. the etched ruler on the front rail didn’t line up, but the fence was absolutely parallel to the blade. it can probably be made quite serviceable, even though it isn’t nearly as “sexy” as a bies type t square fence.

as far as powering a 3 phase on single phase 220v power, you might investigate a variable frequency drive. they seem to work quite well and give your 3 phase tool a variable speed control.

http://www.factorymation.com/Products/FM50_230V/FM50-203-C.html

http://www.sawmillcreek.org/showthread.php?189669-Running-my-3-phase-bandsaw-using-a-VFD&highlight=band+saw

http://www.temcoindustrialpower.com/search.html?category=Variable_Frequency_Drives

https://www.youtube.com/watch?v=SOxNjsuUrZA&noredirect=1

-- there's a solution to every problem.......you just have to be willing to find it.

View Shawn Masterson's profile

Shawn Masterson

1246 posts in 553 days


#4 posted 439 days ago

I have the same saw with 3hp single phase motor. The fence you are referring to is a jet lock fence. They are an accurate good quality fence once properly set up. I did end up changing it out for a t-square style I got a great deal one. as far as it being three phase a VFD is the wrong way to go for a TS. I would only use them on a machine that you need variable speed(BS, DP, lathe). the other options are static or rotary. Here is the RPC I put in my shop, it is a 10hp unit and I have less than $300 in the whole set up. The choice for me to go rotary was that it gave me the option to run any 3phz machine up to 7.5hp. if you go static you can mount the converter to the machine and then just plug it in like any other single phase machine, but it will run at 2/3 power. If the saw is 5hp I don’t see a problem with this. A good quality 2-5hp static converter is $90. My planer came with a cheap 3-5hp static. It would run it but you could tell it was needed more. An RPC is really more of an investment for the future. What I mean is once you have it, it will run whatever you need. if you only plan to have the 1 3phz machine then a static may be what you need, but it is nice to have the option if a good deal comes around on other old iron.

View SCOTSMAN's profile

SCOTSMAN

5281 posts in 2190 days


#5 posted 439 days ago

I wouldn’t lose sleep about a convertor they are a good long term investment more than half of my machines are three phase but I have several rotary and invertors in my two shops they never gave me a problem yet or actually once I had to replave a timer about £55 and a capacitor around £12 . Alistair

-- excuse my typing as I have a form of parkinsons disease

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SCOTSMAN

5281 posts in 2190 days


#6 posted 439 days ago

I wouldn’t lose sleep about a convertor they are a good long term investment more than half of my machines are three phase but I have several rotary and invertors in my two shops they never gave me a problem yet or actually once I had to replave a timer about £55 and a capacitor around £12 . wow those statics are cheap I paid around £650 for mine Alistair

-- excuse my typing as I have a form of parkinsons disease

View REO's profile

REO

582 posts in 678 days


#7 posted 439 days ago

Shawn, I believe your assessment of RPC’s is a little off. depending on the type of equipment up to three times the nameplate rating of the RPC can be driven at the same time. over sizing the RPC is only needed for heavily loaded start-ups like air compressors and can be handled with a balanced array of capacitors in the start circuits. the power of the motor is not reduced by 1/3! in fact if the RPC is tuned to the load of the driven motor they can be extremely efficient. If you really want to do it up build a start bank and circuit and a run bank to phase the supply power for the existing motor, integrate the phase conversion and skip the external RPC.

After saying all that I would agree with Scottsman. IF this is the only motor you plan to use the RPC for your money would be better invested in a single phase replacement motor. then save the old motor to build an RPC in the future if the need arises. It will become old in a hurry having to start the RPC every time you need the saw.

View Shawn Masterson's profile

Shawn Masterson

1246 posts in 553 days


#8 posted 439 days ago

An RPC gives you full 3phz power, but a Static phase converter will only give you 2/3 power. If you look at the post I linked of the setup up I have, mine is switched by a cheap remote from any where in the shop. The remote I bought has 3 receivers 1-DC#1, 2-DC#2, 3-RPC. since I turn on the DC before I use the planer I turn on the RPC with the same remote. It really is pretty sweet.

View lwllms's profile

lwllms

535 posts in 1886 days


#9 posted 439 days ago

In our shop we used to have two Powermatic 66 saws. One with the old style cast iron fence and one with the Biesmeyer style fence. The one with the old style fence was always used when we needed accuracy like when doing joinery and the one with the newer style fence was used for roughing out material that was cut over-size anyway. We now have just one of those saws and the one with the Biesmeyer style fence is the one that went away. I wouldn’t consider giving up the old style fence and it’s the reason we won’t be replacing that saw with a SawStop.

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joesf

25 posts in 493 days


#10 posted 437 days ago

First, let me thank you all for the responses. I have a friend with some old motors and if he has a single phase 3 hp may swap it out. May still have to buy one as suggested or do the converter.

I am happy to hear that the jet lock fence is a decent one. I tried to adjust it parallel to the miter slot yesterday. I think I did by and using an allen wrench in the holes on opposite sides of the fence to get the fence to get it to lick down so it is about a 64th to the right in the back compared to the front.

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joesf

25 posts in 493 days


#11 posted 408 days ago

If I replace the 3 phase motor with a single phase 3hp do I have to get a new magnetic switch as well? Leeson makes a 145tc frame motor model 120824 that is supposed tot fit. Id rather have the full 3 hp than derated to 2 hp with the converter. http://lumberjocks.com/topics/49953#

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