wrote:
On-Condition wrote:
Just wondering, exactly why are radial diesels not part of the
diesel revival? You can't beat radials on airplanes for smooth
reliability. I once saw a cracked-off jug pounding through the
cowling as the engine was still running (the single Otter had
just landed).

Guiberson: 4 stroke 9 cylinder radial, 2 valves per cylinder, 300HP.

Packard: 4 stroke 9 cylinder 1 valve per cylinder (Neato) 225HP.

Zoche is a ported 2 stroke, if I recall it was supposed to be available
in 2 4 and 8 cylinders.


Well done.

DHC-6's (PT6) run on winter diesel in the north all the time
where turbine fuels are simply not available. Wouldn't know
about biodiesel but I've heard that fish-sourced biodiesel
(used in Halifax) tends to congeal a bit more than winter diesel.
I've always thought that summer fuel with a slight BTU/lb
edge added to lower cost was the way to go, even if it means
preheat with exhaust or whatever.

As for emissions, diesels appear dirty but are cleaner as far
as ozone is concerned. Might be the lesser of two evils.

Finally, walking the prop on a radial would clear lesser hydraulic
locks but I think the objective was more detection that cure.
This would not be much different for a diesel radial (out on a
limb on this). I sure would not look forward to having to swing
one though ;-)