Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Thanks so much for the testimonial. There are many great builders out there, we just get to see a few of them. Ron Colonna is at the top of the list also.

Ron does make some very fine engines George.  His V-Twin Panhead is one of my favorites.  And a lot of others; as this video has over 1.4 million views since 2010!

Ron's Description included with his video.

V-Twin Panhead
Ignition: Spark
Bore:  1 5/16 in.
Stroke:  1 1/2 in.
Two Cylinder Four Cycle
No Castings Used

This engine was scratch built to a scale of 2/5ths or 40% of full size. The bottom end was taken from a drawing of a Knuckelhead engine that I puchased on e-bay. The top end was patterned after photos taken from e-bay of Harley parts for sale. I also bought a Harley repair manual that helped with the oil system. The crankcase was split into three sections instead of the usual two for ease of machining. The ignition is solid state and I use a GM coil which fires the two plugs simultaneously. Timing is advanced and retarded with the timer body. Two rotating magnets fire a Hall effect device at the proper times as per full sized points. The engine is large enough to produce that lovely V-twin sound.