
A very short video of a project to drive a small dynamo and off-hand grinder through a dog clutch using a small high speed steam engine.
Engine
Stuart Sun, a garage rescue from a rusty non-runner with a lot of faults. ¾” Bore and stroke, simple expansion, single acting. Wet sump lubrication.
Dynamo
PM Research Kit, 1.6VDC at 6000rpm. Casting kit with a pre-wound amateur.
Off-Hand Grinder
Scratch built using Proxon wheels and mini ball races.
Dog Clutch
Scratch built with Delrin chain drives to reduce friction. Step-up drive 2.5-1
Engine runs at about 2,400 rpm providing dynamo and grinder shaft speeds of about 6,000 rpm. The engine is slowed in this very short video.