On 07/03/2011 18:58, Michael Rigby-Jones wrote:
> This assumes your Beetle engine will hang together for more than one
> spark period at 8000RPM...
>
red line at 5,000 rpm?
my VW van did 55mph

it was revised flatter flat air cooled twin done after Beetle ceased=20
production.  Eventually the covers over the push rods started to leak :(

It had electronic Ignition. When I was very small my Grandfather had a=20
Beetle with 6V electrics.

Most 1960s to 1980s cars I worked on  12V and  ignition coil + "points"=20
and distributor cap with 4 sparks in turn per revolution, 4 cam bumps =20
on shaft opening the "points" to interrupt current to ground through=20
ignition coil.

Four stroke is 1 spark every two revolution. So distributor shaft is at=20
engine RPM x2 since it does 1/4 revolution for distributor each piston=20
stroke?
--=20
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