The Mysterious Case SI
A 1948 Case SI with Steel Wheels and a Two-Speed Winch Drive - is this the Only Survivor From a Run of 100?
By Kirk Unzelman

I have restored a wide variety of antique farm equipment in the last few years, and each project has given me the satisfaction of seeing a proud and sturdy piece of machinery put back to shape performing its original function. Except for one item: A 1948 Case SI tractor.

It's not that the restoration didn't go well, because it did. After a lot of cleaning, fabrication of missing parts, painting and carburetor and clutch work, the tractor looks and runs just fine. The problem is I can't figure out what it was used for, and I'm hoping an alert Gas Engine Magazine reader will be able to fill me in on the details. But first, some background.

The Case SI
I found this tractor in the vicinity of Mt. Rainier in Washington. The seller had bought it from someone who had tried to use it as a garden tractor, with understandably poor results. After getting it home and cleaning it up, I found that it was a1948 Case SI, serial number 5212750. It sits on spoked steel wheels, the rears wearing extension rims fastened with cleats, and it doesn't have a three-point hitch or a PTO - and it doesn't have a belt pulley, either. Instead, at the pulley location there is a two-speed gear box, which has this imprint:

 &n.. end up in Washington state? I still don't know.

The Rest of the Story
I couldn't stand to see the winch attachment go unused, so I added a sprocket to the winch gearbox and built a shaft support on the front of the tractor. The shaft has a sprocket at one end to carry the chain from the gearbox, and a nice, wide belt pulley at the other end so I can run any belt-powered implements I have. By coincidence, the belt pulley is an original Case unit with the "Old Abe" emblem cast in the spokes. I also built up a safety guard and fabricated another Case logo and eagle emblem from steel to give it an authentic look.

Now that it's finished, my Case SI is capable of doing some useful work again, but I am looking forward to hearing from anyone who knows the original purpose of the Evans winch attachment.

Kirk Unzelman has been, at various times, a cowboy, rancher, farmer, army medic, truck driver and mechanic. Contact him at: 4635 130th Ave. S.E., Bellevue, WA 98006

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