| May/June 1983

  • 6 HP United States inverted upright
    6 HP United States inverted upright
  • Rock Island Heider tractor

  • 6 HP United States inverted upright
  • Rock Island Heider tractor

This picture was contributed by George S. Clark, 254 Pond Point Avenue, Milford, CT 06460. It is a 6 HP United States inverted upright. Bore is 6' and stroke is also 6'. Serial Number is 10657.

'It is a little unusual since it has a heat exchanger for both the fuel and the air intake. I suppose this is for using kerosene or gasoline. It also has only one port that functions as both intake and exhaust port with an odd arrangement for closing off the intake when the engine exhausts. It's a real strong running engine.'

This Rock Island 'Heider' tractor belongs to William P. Riekena, R.F.D., Wellsburg, Iowa 50680. It was purchased by his father in 1924, as a seven-year old used tractor. It was used mostly for belt work shelling and grinding feed. The tractor was made in 1917 and is a Model C, rated 12-20 HP. It has a Waukesha engine bore 4', stroke 6'.


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!

Be sure to take advantage of the Square Deal Subscription Program.

  • No Missed Issues.

  • No Renewal Notices.

  • No Additional Cost.

The Square Deal Subscription Program is designed as a paperless transaction with automatic renewals at a preferred low rate.   With advanced electronic notification, a 100% satisfaction guarantee and an easy opt-out plan, the Square Deal Subscription Program is the best value, risk free, eco-friendliest way to subscribe.

Facebook YouTube