Rotary firings

[Clare Snyder]

Bruce Plecan wrote:
> 
> Just a tad rusty here, but (on a 2 rotor rotary), aren't the rotors, and
> shaft geared at 1:1,so at 1K rpm there are 2K exhaust pulsations?...
>   Where as in a 2 cylinder 4 stroke would only have 500 pulsations
> per minute at 1K rpm idle?.
>   EFI content is that this is in reference to O2 sampling.
> Cheers
> Bruce
Nope - usually NOT 1:1 Closer to 3:1 if I remember from back in the R100
and RX3 days when I worked for a Mazda dealership.
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                           Clare Snyder
                         Waterloo, Ontario