Keith;
That type is called a "rotary" engine; there were several used in WW I.
The "Rhone" was one, I think.
Regards, Neil Tucson, AZ
-----Original Message-----
From: Keith Turk [mailto:kturk@ala.net]
Sent: Wednesday, October 13, 2004 2:03 AM
To: Albaugh, Neil; land-speed@Autox.Team.Net
Subject: Re: Crank Balancing (Radial's )
One of the engines had a radial spin around the crank... rather then the
crank spinning..... think about that one for a second.... hmmm can't
remember the name of it... but I've seen it several times in film...
Keith
----- Original Message -----
From: "Albaugh, Neil" <albaugh_neil@ti.com>
To: <land-speed@Autox.Team.Net>
Sent: Tuesday, October 12, 2004 3:22 PM
Subject: RE: Crank Balancing ( Math )
> Bill;
>
> A well-balanced V-8 isn't bad at all but a well-balanced I-6 or V-12
is
> a thing of joy. In a V-8 there is still a "couple" that can't be
> compensated with balance weights.
>
> Some late 4-cyl engines are using a balance shaft that runs parallel
to
> the crank; this improves its overall balance but doesn't compensate
the
> vibration completely.
>
> Aircraft engine cranks are a special case, though. Propellers are a
> "flexible" load and those cranks aren't subjected to torsional
stresses
> like an automobile engine connected to its semi-rigid load through a
> clutch. A drag race would wind up most aircraft engine cranks like a
> piece of spaghetti.
>
> But then there's the radial aircraft engine-- a VERY short, rigid
crank.
> Some planes with radials even returned from missions with entire
> cylinders shot off. Sitting behind that big air- cooled bullet- shield
> was a psychological morale booster, or so I've read.
>
> Regards, Neil Tucson, AZ
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