Peter S. Lert wrote:
> 1.) Unlike a two-stroke gasoline engine, the Zoche diesel (and, so far
> as I know, all the other new two-stroke diesels) uses entirely
> conventional pressure lubrication (i.e., either remote oil tank or "wet"
> crankcase, oil and scavenge pumps, etc.). Overall, a two-stroke diesel
> is considerably more efficient than a two-stroke gas engine: since
> nothing but air is inducted into the cylinder (the fuel is injected
> later), port timing is chosen such that the incoming charge (already
> supercharged by a blower or turbo, or, in the case of the Zoche, both!)
> completely scavenges all the combustion products from the cylinder.
>
> I've run the Zoche myself (alas, only on a test stand so far) and was
> impressed by its smoothness and ease of starting.
>
> 2.) Based on purely subjective experience behind and astride the 2-cyl
> Franklin and BMW, respectively, the latter is an order of magnitude
> smoother.
>
> Happy new year to all!
>
> Peter Lert
Re: the Zoche diesel, I've heard various parties describe this engine as the
aviation powerplant equivalent of "vaporware". Is this at all accurate, or are
they just (forgive me) blowing smoke?
Steve Genotte
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