Don't forget, these engines are 4 stroke machines (the
crank makes two full revoltions for each cylinder to
fire once.) on a four cylinder engine, all the
journals are in the same plane. A water wheel would
be akin to a two stroke engine (each cylinder fires
once each revolution.)
Tim
--- Randall Young <randallyoung@earthlink.net> wrote:
>
> Kai :
>
> Suggest you take another look at your TR6 crank. I
> believe you'll see
> that the journals are indeed separated by 120
> degrees, with #1 and #6
> being in one plane, 5 and 2 in another, 3 and 4 in
> the third plane.
> Otherwise, the peaks on the point cam would have to
> be unevenly spaced
> ...
>
> There have been 'uneven fire' engines made, the
> reason was not
> efficiency but vibration suppression. To try to
> extend this to your
> water wheel analogy, it doesn't matter where the
> splash boards are
> located, as long as they each receive the same
> amount of water as the
> wheel turns (and the wheel has enough inertia to
> make a full
> revolution). Adding more splash boards is akin to
> adding more
> cylinders, it makes the power delivery smoother, but
> you get about the
> same amount of power for the same amount of water.
>
> Randall
>
> "Kai M. Radicke" wrote:
> >
> > As I was trying to fall asleep last night, I began
> to wonder why the crank
> > for my inline six (TR6) motor has all of the
> journals in the same plane
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