Hi,

Can you please explain the problem and solution of balancing when
using  a cut down e-shaft  with single rotor 1/2 Mazda 13b engine.

Regards Zahid


Balance is controlled by these equations. The Wankel is not just
statically balanced but dynamically balanced as well.

In a single rotor engine the counterbalance weights must provide a
STATIC balance for the e-shaft eccentric and its rotor and must also
account for the DYNAMIC wobble caused because the static counter
weights are not located at the mechanical centres of the rotor and
the eccentric. It is impossible to do this.

They must be mathematically sized relative to their lateral position
from the rotor and eccentric centre line.

Paul Lamar


I sent all rotating components to Mazdatrix for dynamic balancing. They worried over
the balancing for a few days--got it quite close.  I paid them a little over $300.

Lewis Bjork



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