1320stang
Well-known member
This thing is so cool and detailed, I forgot what the heck you were rebuilding, a BANDSAW!!! 


This thing is so cool and detailed, I forgot what the heck you were rebuilding, a BANDSAW!!!![]()


The Motor
This afternoon I disassembled the motor and assessed it's condition. The result isn't good.
I began by removing the motor from it's mounting plate. Then, I removed the main drive pulleys, which are just a couple of stock Browning pulleys stacked up on the motor shaft:
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You'll notice in these two photos that the motor has a lot of shaft endplay. Over 1/8", actually. I suspected a couple of broken wave washers:
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I split the motor, curious to see the carnage:
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Years of hammering due to severely worn belts have taken their toll. The thrust washers and shims are in pieces, as is the wave washer:
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In places, the bearing is completely worn through. The oiling grooves are full of swarf:
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The windings are in OK shape, considering a mouse had made a home in here at one point:
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The front bearing thrust face is worn over .020":
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Verdict:
This motor is shot. It needs a re-wind and conversion to ball bearings.
Cost to rebuild / rewind:
Magnet wire: $60
Insulation: $25
6005 bearings: $20
Propane to burn out motor: $2.50
Epoxy: $75
Misc materials: $20
Machining time: 6-8hours
Rewinding time: 2 days
$202.50 total
24 man-hours of labor
Versus a $142 new motor:
https://www.surpluscenter.com/item.asp?UID=2009110313082427&item=10-2393&catname=electric
I'll buy a new motor. As much as I'd like to save the old motor just for the fun of it, motors this size are a commodity item. In these sizes, it's orders of magnitude less expensive to buy a new motor than rewind an old one. So, this old Peerless has served her time. A new motor will soon be powering this old V-36.
You have 3- phase power coming in your house? If so cool!
...this method will also be very accurate, at least as accurate than Do-All's jig and likely better.
Instead, I have a plan. It involves... a trip to the music store.
Let me guess: You plan to tension the blade by tone of the plucked blade?
I had to dig up my account after my brother linked me to your thread. Excellent work. Me and my brother are in our mid 20's and its great to see someone with the same drive/skills.
We do exist.
We just rebuilt our Champion R15 and are working on a Jet 7x12 bandsaw rebuild.
Keep up with the good work!
Hi Ken,
The trip to the music store will be to purchase some .016" music wire. After using a master precision level to bring the reference plane level, I'll clamp a holder to the guidepost with a short section of music wire attached. At the other end of the wire will be a weight immersed in oil. This "plumb bob" will provide me with a reference to vertical that is precisely perpendicular to the reference plane.
I'll then inject a very low voltage "click" into the perfectly clean wire. Using a home-made wire micrometer, which is just a depth micrometer and an insulating bushing, I can locate the wire in space using an oscilloscope or an audio amplifier and headphones. When the micrometer makes electrical contact with the wire, the click, or tone, will jump in amplitude.
The vertical wire will allow me to set the guidepost perpendicular to the reference plane and later establish a reference line for the plane of the upper and lower band wheels.



I thought you could hold five decimals with a tape measure!
This sounds like a very accurate method, quite an interesting approach too.![]()

I guess using a straight edge would be too boring, eh?![]()
...gravity is fairly dependable.
To say the least!
And a little conundrum:
Could gravity be faster than the speed of light?
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funny you should mention this, I just tore down my upper wheel-housing last night and was looking at some of your reference pics.
I think I'm going to lose the original motor too. TSC has a replacement that looks pretty good that I picked up from Gray Walker's page. I think I'm going to go with that and just run it on 220V 1P.

Does your upper trunnion look more like mine, or more like Grey Rider's? They changed designs several times. By the time you're ready to get it back together I should have an alignment procedure documented.![]()
I made extra sure to note where the shims were located and bag/tag where everything came from.
The trip to the music store will be to purchase some .016" music wire. After using a master precision level to bring the reference plane level, I'll clamp a holder to the guidepost with a short section of music wire attached. At the other end of the wire will be a weight immersed in oil. This "plumb bob" will provide me with a reference to vertical that is precisely perpendicular to the reference plane.
I'll then inject a very low voltage "click" into the perfectly clean wire. Using a home-made wire micrometer, which is just a depth micrometer and an insulating bushing, I can locate the wire in space using an oscilloscope or an audio amplifier and headphones. When the micrometer makes electrical contact with the wire, the click, or tone, will jump in amplitude.
The vertical wire will allow me to set the guidepost perpendicular to the reference plane and later establish a reference line for the plane of the upper and lower band wheels.
You lost me after music wire. I cannot picture at all what you're trying to do but it sounds complicated... which in my experience, usually means highly accurate. Please take lots of photos for the benefit of dumb schmucks such as myself.![]()
A Pmech thankyou for posting gave me the courage to buy some quality used equip.
Thanx Trevor
Quick question- what type of paint stripper did you use?
However, I can recommend "Aircraft Remover" made by Klean Strip. It is sold in most Auto-Zone stores. Apply it with cheap natural hair "chip brushes", which are generally the cheapest of the cheap paint brushes you can buy at the hardware store. Synthetic brushes will "melt" in minutes.

) mod the end bells for modern bearings.I like your method of perpendicularity. Quick question, though: How do you keep the music wire hanging perfectly straight? I would think that any weight on the bottom would have to be perfectly in line with the center of mass of the wire or else it would pull it off to an odd angle.
I had to apply a couple of coats and scrape in between, but this stuff WORKS. One item they suggest using a PLASTIC scraper, I say BS, get a sharp, stiff, metal scraper. Also I wanted a bit better finish when I was done, so I hit it with a surface prep roloc and it polished up nicely.
Thanks for the recommendation A_PMech.![]()
wineslob said:A P Mech, don't throw out the old motor, that thing is pre '64 NEMA, much better than "new". Essentially it's built like the proverbial sh*thouse.
You can (NO KIDDING ) mod the end bells for modern bearings.
Commodore said:How do you keep the music wire hanging perfectly straight? I would think that any weight on the bottom would have to be perfectly in line with the center of mass of the wire or else it would pull it off to an odd angle.
Commodore said:Also, how fine of a resolution do you have as the depth gauge approaches the wire? I think that another neat way to check for distance between the gauge and the wire would be some sort of very precise LCR meter to measure the capacitance between the wire and gauge. Given clean oil I think it may be capable of detecting a much smaller distance, so that you can more sure you are "just touching" it. If you want to be that nitpicky for anything else, that is.
Mjozefow said:I await with great anticipation A_Pmech!


I'd love to save it and there's plenty of meat in the end bells to bore them for ball bearings. However, the windings are shot. Small motors are such a commodity item, I'm going to replace it with something of the same weight. It would be fun to re-wind it, but that just isn't in the cards. I can buy at least two motors for the cost of materials and my labor
Snip
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Exceptional rebuild. I am the new owner of a 3613-2 from the other forum. And this thread is really awesome.
Luckily I had read about the eye bolt before hand. And luckily the saw is intact. No damage done after the loading.
Anyhow, just wanted to let you know. You are doing a great job. Really nice to see someone else who cares about older machines. If only they could talk!!!
Jokeman said:Wow, this thread is very impressive. Have you posted pictures of your shop?
Wineslob said:Darn thats too bad. You could probably replace it with a severe duty, and be in the ballpark.
Commodore said:Oh, yeah, that makes perfect sense. Things are always a lot more rigid in my head. Explains how I keep up with all those supermodels up there.
1320Stang said:Seems to me that DoAll should have just provided the forged eyebolt already installed. The darn thing is so tall, no one would see the hole much less think to look for one.