Sintz Engine


Keith Johnston

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As this issue is being compiled in late February, this writer at least, has a longing for some warm southerly winds to herald the beginning of warmer weather. For those of us who don't keep the shop heated all the time, the winter months slow up any engine and tractor restoration projects. Cold hands and cold feet sure diminish one's enthusiasm.

We find it interesting indeed that our previous mention of a Junkers diesel engine in our stable is still generating letters and even a few phone calls. Just to clear up one point, this single-cylinder engine is of two-cycle design. The two pistons travel toward each other, toward the center of the cylinder where the injector is located. Just as soon as we get warm weather, we'll take some photos of this engine. Our sincere thanks to all who have called and written us about this engine.

A final note regarding the Junkers engine-Hobart Welder Company bought three diesels at a Trade Fair in Europe during the early 1930s. One was the single cylinder engine we have, and the other two were of two-cylinder, opposed piston design. These were tested for possible use with Hobart welding generators, but were never adapted on a production basis. So far as is known, these were the only three Junkers diesels imported into the United States, although a few may have gone to Canada. No doubt due to deteriorating relations with Germany in the late 1930s, no further work was done in this regard, and after World War Two, the design was apparently discontinued entirely. In fact, we have been told that the Junkers factory was destroyed by Allied bombing missions.

We talked with Mr. Bill Starkey over at Starbolt Engine Supplies the other day. Bill continues to express his concern over safety or the lack thereof at engine shows. Especially during the past year or so, we've published several 'horror stories' that were real life experiences for a few of our collectors. At the risk of sounding like Casper Milquetoast personified-folks, we need to be careful about this old iron, whether it is engines, tractors or whatever! We can all have a lot of fun with our hobby, and we certainly are doing the right thing in showing our gems at the shows. Almost anything can happen with these relics, especially since most were designed with almost no thought of safety for the operator, much less for spectators. Mr. Starkey speaks of a valid concern we believe, in that if we do not police ourselves and exercise safe practices, the day will come when some politician or some bureaucrat will decide to do it for us. If somebody grinds up a finger in the timing gears of your engine- perish the thought! And one other thing-why not carry a fire extinguisher in the box with the oil can and water pail?

Our questions this month begin with:

24/5/1 Crawler tractor Q. See the photo of this little crawler tractor. Can you identify the model, the proper colors, etc.? Forrest Greene, Rt 10, Box 472, Lenoir, NC 28645.

A. Yours looks like an Oliver HG crawler. The HG was tested at Nebraska in 1949 under No. 434. (See Nebraska Tractor Tests Since 1920). We assume it to have been finished in the same Oliver Green as its contemporaries.

24/5/2 U.S. Tractor Co. Q. The below photo illustrates a small garden tractor from U.S. Tractor & Engineering Company. We would be happy to hear from anyone with information on this tractor or the company. David S. Meyer, 2482 Roxana Street, Placerville, CA 95667.

A. There's nothing in our files on this one. . .

24/5/3 Briggs & Stratton Q. I have a Briggs & Stratton upright, kick-start engine that is not pictured or mentioned in American Gas Engines. I would like to know the year and horsepower of this engine, s/n A 34810. See the below photos. Frank Dorsey, 548 Franklin 'Terrace, Washington, PA 15301.

24/5/4 Bolens and others Q. I'm a recent subscriber, and am submitting a picture of a Wade engine and a chain-driven pump jack. See 24/5/4A and B. Would appreciate hearing from anyone with information on either the engine or the pump jack. Photo 24/5/4C illustrates a 1918 Bolens Model 812 garden tractor. It uses a chain drive to both wheels with an independent clutch for each wheel. Would like to hear from anyone with one of these tractors, as mine is missing some parts. Keith Johnston, 105-547 Belmont Ave W., Kitchener, Ontario N2M 5G9 Canada.

24/5/5 Stover CT-2 Q. What is the year built for Stover CT-2, s/n TA201569. Hal Opdyke, 4960 Sioux Way, Okemos, MI 48864.

A. Your engine was built in 1929.

24/5/6 Kohler information Q. I have a Kohler Electric Plant, Model DP, s/n 104989. When was it built, and where can I find information on it! Bruce Brockett, 9572 ST 224, Deerfield, OH 44411.

A. We suggest you contact Kohler Company at Kohler, Wisconsin for further information.

24/5/7 Cat'30' Q. See the photo of a Cat 30, s/n 365 purchased from the Warsfold Estate at Trivoli, Illinois in August, 1988. Any information or help regarding the restoration of this tractor will be greatly appreciated, as we have no manuals or any other information. Steve Warters, RR 3, Box 198, Tuscola, IL 61953.

24/5/8 Sintz engine Q. Here are two photos concerning a Sintz engine I recently acquired. It is a two-cylinder two stroke engine, s/n 841, and uses a 53/16 inch bore and a 6 inch stroke. The heads appear to be different than on the engine illustrated on page 468 of American Gas Engines. Although I don't expect to find any parts, I would like to hear from anyone with information or dimensions that would assist me in making the needed parts. Also would like to know the original color. Miles R. Parker, RFD 1, Box 3490, Poland Springs, ME 04274.

A. Since there are a number of GEM readers who are very interested in Sintz engines, we certainly hope they might be of help in your project.

24/5/9 Sta-Rite engine Q. I have a Sta-Rite engine, Type A-1, 1? HP, s/n 3621. Since a number of parts are missing, I would like to correspond with someone having one of these engines for the proper dimensions etc. The engine appears to have original paint; green on the block, and red flywheels.

What is an ignitor, and do I need one for this engine?

In my oiler collection I have an ornate one with a 3/8 pipe fitting. It is stamped, 'Standard Gas Engine Co., San Francisco, Cal.' on top. What size engine would use this size oiler? David Hughes, PO Box 21, Columbia, CA 95310.

A. Sometimes the terminology is confusing in the gas engine hobby. An ignitor generally is meant to be the mechanical low tension ignitor often used. It usually is a cast iron block with an insulated stationary point and a moveable point. In operation, a mechanism on the engine pushes the points shut at the proper time, and when the trip-off mechanism operates, springs on the ignitor allow the points to open very quickly. In so doing, the circuit is broken and a substantial spark results.

Regarding the outlet size of the oiler, we would suggest that the 3/8' pipe size was probably used on some thing of 4 horsepower or larger, but this is only a guess-some engines of only 1 ? HP used this pipe size on the oiler body, and in fact, the 3/8 size is quite common. More indicative of the engine size might be the oil capacity of the lubricator.