Challenge and Associated Engines


| 3/13/2017 12:20:00 PM


Tags: April/May 2017, Field Notes, Flywheel Forum, Dave Irey,

challenge engine 

Enclosed are two pictures of me coupling two gas engines together to seat in the rings on the green engine. The engine is a circa-1917 Challenge 2 hp made in Batavia, Illinois, just outside Chicago. I was never happy with the compression. I re-cut the 1/4-inch piston ring grooves to 5/16-inch. This squared up the piston ring lands, which were well worn. The new rings needed some run time before trying to start it up. I had this 2-1/4 hp Associated air-cooled engine that I planned to sell, and which had sat for over 20 years. I got it running and put it to work spinning the 2 hp Challenge for a couple of hours. I live in an urban setting and don’t want a lot of noise escaping from my yard and offending my neighbors. The car muffler helped with noise reduction.

The Challenge always ran OK, but had some blow-by; that is now gone. I have owned it about 45-47 years. The 2-1/4 hp Associated got a good workout that day and was later sold, as I have another one on a wagon with a magneto. I bought this Associated in the mid-1970s. The shop foreman standing on the Challenge is giving us the High Five for a job well done.

Dave Irey
6348 Mildred Ave.
Edina, MN 55439


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