Sandy writes That may very well be...the Rover P-5 engine (the 3.0 litre
six) used to be
advertised as so smooth running that a 10 shilling piece (I think that
was
the coin....)
Sorry Sandy, in the days when they made the ROVER 3 litre, ten bob was a
note. The coin frequently used in those gimmicky trials was a 3 penny
piece which had ten or twelve sides so it stood up easily.
ISTR from several decades ago when I went to school that the six is
smooth because the vibration forces from the crank roatationt are
naturally in closed balance.
Regards from Western New York State
Bill Leacock.
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