Field Notes

category article image

Challenge and Associated Engines

 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 ...

| Mar 13, 2017

Gas Engine Magazine

Preserving the History of Internal Combustion Engines