> Torque peak is not only a function of pipe length
 > but also a function of diameter as shown in the least chart.
 > Perhaps something to due with Helmholtz theory.
 >
 > Paul Lamar ...No rotor no motor.

 Paul,

 OK I give up. What is the red object that looks suspiciously like
 another
 spark plug. It is too far down to be a leading plug and too far away to
 provide an exhaust gas scavenging spark. So is it a water
 injection port?

 DougFir

 Somebodies idea of where to put another spark plug.
 Richard Konnen I would guess.

 Paul Lamar ...No rotor no motor.

Paul,
The electronic revolution is making it's way into consumer motorcycles.
The newest Yamaha R1 (1000cc repli-racer) is being fitted with a servo
motor driven 2 position variable length intake. Not enough throw to
duplicate the LeMans engine, ...yet.
Bill Jepson

Here are pics of the Lemans engine mechanism for the new guys.

Paul Lamar

Paul,
Good to see those photos and revisit the design. Is it a slide throttle?
Or are there butterflys hidden in that mass of mechanism?
Bill Jepson

Slide throttles in the Lemans engine.

Paul Lamar ...No rotor no motor.

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