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Racine Model 816 info needed


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I just picked up this Racine Model 816 power hacksaw. I have found myself with a small pile of train rail that needs cutting, so I had been on the hunt for a decent bandsaw. I have scored and snapped rail before, but I want to make clean, square cuts all the way through. I lucked out and found this on FB marketplace, only had to drive 260 miles round trip to get it. Absolutely worth it.

The saw is in great condition; the motor is not original and part of the stock gauge is missing, but otherwise it is in great shape. I have found the Racine sales pamphlet online regarding their power hacksaw lineup, but so far i have come up dry regarding a user's manual or parts explosion. Is there anybody out there that may be able to share some info or point me in the right direction?

 

power hacksaw racine1_small.jpg

power hacksaw racine2_small.jpg

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Still haven't found much info on this power hacksaw besides the Racine brochure, but I found a video on this exact saw on YouTube by a man named Jeff Heath. Not sure if Jeff is a member on this forum, but his work is much appreciated. I try to avoid "going in blind" whenever possible.

I started tearing it down today while still on the trailer. It's too heavy for me to safely manipulate by myself, so this will help lighten the load. I know I started this topic as an information-seeking post, but I'm also going to use it to document as I tear it down and get it set back up.

Picture descriptions:

1. Saw base and lower casting; saw arm and upper casting removed.
2. The Hydraulic Pump. The check valve was stuck and full of gunk.
3. Hydraulic Down-feed mechanism removed, showing hydraulic oil reservoir.
4. Upper casting removed, showing other side of the oil reservoir where the pump sits.
5. Hydraulic Pump chamber; I found some dirt dauber nests in the reservoir and about 1/2" of old sludge in the bottom.
6. The Hydraulic Down-feed mechanism. The piston and rings are in great shape. The ball bearing check valve was stuck and full of gunk.
7. I choose to call this the function selecting piston. It fits into the side of the Down-feed Mechanism and is part of the system that cuts the saw off and raises the arm when a cut is finished.
 

The motor that came with it was all wrong; the original motor was a 1200 rpm, 1 HP motor. One of the previous owners installed a 1/3 HP, 288 rpm gearmotor, which I'm sure cut about as fast as a herd of turtles stampeding through peanut butter. I ordered a new motor of the right rating from Zoro. BTW, Zoro generally has good prices and frequently offers 20% coupons. I have saved a bunch of money ordering industrial supplies through them.

I also need to determine the correct drive pulley size. This hacksaw is the 2-speed model, which is achieved by swapping the drive belt on the step pulleys, similar to a many drill presses. Unfortunately, the drive pulley is missing, so I have been doing some math to figure out the proper pulley size. The motor turns the drive pulley, which drives a pulley attached to a small sprocket (14 teeth), which drives a large sprocket (54 teeth). One revolution of the large sprocket equals one stroke, which is 5 inches. The Racine brochure says that this model has two speeds, 100 SPM and 140 SPM. I believe SPM is Strokes-Per-Minute, but I heard someone refer to it as Surface Feet-Per-Minute. Not sure I buy it though. The large side of the driven step pulley is 9.25" OD, and the small side is 8.25" OD. By my math, the drive pulley needs to be 2.25 or 2.5 inches, with a 4" step. I doubt I'm going to be able to find that, so I may just order a single pulley for the slower speed and run it like that. If anyone wants to check my math, or if someone actually has one of these saws and wants to let me know what is right, I would welcome the input.

I'll keep updating this post as I get the chance to work on it.

 

Arm&Drive removed_small.jpg

Hydraulic Pump_small.jpg

Hydraulic Oil Chamber_small.jpg

Hydraulic Pump Chamber_small2.jpg

Hydraulic Pump Chamber_small.jpg

Downfeed mechanism_small.jpg

selector piston_small.jpg

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Rojo, thanks for sharing my enthusiasm for this old saw. I am also excited to get it running. I found a Racine sales brochure that give some specs on the saw, attached below. Looks like it weighs about 600 lbs. Judging by the included table of example material cuts, I'm going to take a wild stab in the dark and say I should be able to cut a section of 85 lb. train rail in 5 minutes or less. The downfeed pressure is adjustable however, so that will affect the cut speed. I'll have to do some experimenting once it is up and running.

Racine 816W2 brochure page snip_small.jpg

Racine 816W2 brochure page snip1_small.jpg

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I've been chipping away at getting the saw up and running.

I found a mistake in the math from one of my previous posts for the drive sheave/pulley and I ultimately decided on a 3" diameter pulley. Once its running, I'll time it and count the strokes to see how close I am to the factory speed.

I got the base pretty much cleaned up, but I still have to scrape some more gunk from the inside. I painted the base exterior and the access doors, I know the black with white lettering is not factory original, but I like it and it's my machine.

The motor frame did not align to the driven sheave on the original mount but fortunately I was able to fab up an adapter plate without the need to modify the original mount.

Still have a bit more cleaning to do, and I'm waiting for another part to be delivered before I am ready for the final assembly.

For the electrical circuit, I am planning on separating the coolant and the motor power. I'm going to bring power to a small gang box, and parallel wire a switch to the pump and a magnetic motor starter to the motor. A motor starter is not really necessary for a motor of this size, but I decided that it would be a good safety feature. Besides, who doesn't like a cool industrial start/stop button? Also, I'll have the option to dry cut if I so choose.

Picture descriptions:

1. Shows the front of the saw, partially reassembled.
2. Front-Right isometric view, shows motor fitted with the adapter plate.
3. Rear view of sheaves and sprocket.

base painted_small.jpg

motor fitup1_small.jpg

motor fitup2_small.jpg

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