OK Don wrote:
I first ran into the balance shaft in my '74 Sonett (Saab) with the V-4 (Ford forklift engine). I don't imagine that the fiberglass body would have lasted long without the balance shaft!
I once saw, in an aircraft application, a 1-cylinder engine with a large *external* balance shaft. It was driven by a toothed belt off the crankshaft.
David Brodbeck '83 300D Turbo
