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| May/June 1967

1615 San Francisco St., San Antonio, Texas 78201

This is in response to Roger L. Eshelman's inquiry in 'What It It?' page 34, Mar.-Apr. 1967 GEM. I at once knew the engine shown on page 34 as a 'Gilson 60 Speed', built in 1/4 hp. size and 3 hp. size, by the Gilson Manufacturing Co., Port Washington, Wisconsin. But, since I have no catalog on any Gilson engine, I checked through my few 'Gas Review' magazines, which showed me, from 1908 to May 1912, Gilson had been advertising, using the same ad, showing a small (1? or 2 hp.) horizontal air-cooled gas engine, stating that their engines were built in all sizes. In the June 1912 issue of Gas Review, Gilson changed their ad to the one reprinted with this story. That is the way the '60 Speed' Gilson engines looked in 1? hp. and hp. sizes. The engine in question, on page 3.4, is most likely the 1? hp. size. Now there could I find the rpm. of the engine given; but you could adjust your engine speed at 450-500 rpm. and be about right. I have never seen a 'Gilson 60 Speed'. The enclosed reprint shows how the frame held the jack-shaft with its different size belt-pulleys, which can be arranged for different speeds of any machine driven. As stated in the reprint, this '60 speed' outfit also included a pump-jack attachment, not shown. Also stated, larger engines up to 27 hp. were built.

In later ads, they supplied stationary engines in 4-5-6 and 8 hp. sizes with friction clutch pulleys on the engines; each of these engines were sold with five pulley-rims, different sizes, for quick changing, to get the right speed for the driven machines, in addition to the 1? and 3 hp. '60 speed' outfits. Such ads seemingly went on to the end of 1913 in 'Gas Review'.

The copies of 1914 'Gas Review' that I have show no advertising at all by Gilson. Then, in 1915 'Gas Review', Gilson advertised again, showing only the stationary hopper-cooled engine in sizes up to 15 hp. called 'Johnny on the Spot' engines. This kept up and ended with the Jan and Feb. 1916 issues of 'Gas Review'.

Roger's engine could be a 1912-14 engine. Note that the battery box rested on the axle at the jack-shaft end and between the jack-shaft supporting irons.

In reference to my story in the Mar-Apr. 1967 GEM, you readers might mark reprint on page 30 as #3 and reprint on page 31 as #1- Someone masked out my numbers and I found out later that the make engine in #1 reprint is the ERD engine, 4 x 6 cyls., made by the ERD Motor Co., Saginaw, Michigan in connection with my Port Huron 12-25 tractor story. You might put 'Erd Motor' some place on the reprint #1, which will indicate that the Port Huron 12-25 tractor was equipped with the 4x6 'Erd' motor the first year; an then the 4? x 6 'Chief' motor was used the rest of the duration.


Gas Engine Magazine A_M 16Gas Engine Magazine is your best source for tractor and stationary gas engine information.  Subscribe and connect with more than 23,000 other gas engine collectors and build your knowledge, share your passion and search for parts, in the publication written by and for gas engine enthusiasts! Gas Engine Magazine brings you: restoration stories, company histories, and technical advice. Plus our Flywheel Forum column helps answer your engine inquiries!

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