Hercules
Ignition: Glow or Spark
Bore: 5/8 in.
Stroke: 5/8 in.
Two Cylinder
Four Cycle
This engine is built from drawings and castings puchased from the late Bob Shores. The engine is a two cylinder design with both pistons and rods attached to a single crank pin. The cylinders fire alternately since it is a four cycle engine and the cam is cut accordingly. It is water cooled and sports a belt driven pump and fan. Oil is splash from the sump. I run mine on glow ignition and I burn straight methanol. It can really scream and I broke a connecting rod one day trying to see how fast it would turn. It was well over 10,000 rpm. Damage was confined to a single rod. Balance would be better with a conventional crank but it runs fine.
Beautiful engine. Well done.
Monpanache 3 months ago
Precious!!
chesstep7447 8 months ago
great model.
montey1017 8 months ago
very nice work , runs spot on too, what sort of piston rings are you using , i see you have managed to get a good seal somehow as there is no exhaust smoke.
scrapveiw 9 months ago
Exactly one year since it was uploaded and no comments! FIRST! It has an interesting sound and defiantly a nice model!
1IdeaAhead 10 months ago