Recreational Power Engineering introduces the Hirth 3701 aircraft engine.

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Recreational Power the North American distributor for the Hirth line of aircraft engines was at the show a prototype of their newest engine, which will be available in the spring of next year. According to Matt Dunbar the new three cylinder, in line, fuel injected water cooled 3701 will be available in two models a high torque low rpm model of 80 horsepower developing its power at 4200 rpm and a high performance version of 120 hp at 6200 rpm.

The 3701 will use a G-50 style of reduction drive, and be available in 5 different ratios. The exhaust system will have two basic manifolds and styles of expansion chambers. The 3701 will have Nicosil cylinders, with water jackets, a chromoly crankshaft, dual ignition, one digital the other magneto style.

TBO on the high performance engine will be 1,000 hours while the lower horsepower model will have a 1200 hour TBO. Weight complete dry 140 lbs.

"The engine has a very narrow profile making it ideal for applications like the P51 Mustang and BD 5, arrow with narrow cowlings." "with the liquid cooling and fuel injection,  fuel burn will come in at about the same as a four stroke engine." Five engines will be shipped out early next year to selected outlets for testing and evaluation, and the engine will be available to the public in May of next year.

For more information contact:

Recreational Power Engineering-
Factory Authorized U.S. Distributor-Hirth Aircraft Engines
5479 E. Co. Rd. 38, Tiffin, Ohio 44883

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