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paul-im new on the block so please bear with me. am i to understand by your
hp -rpm table that the hp of the rotary increases  right along with rpm to
9000 ?.

Depending on the type of intake porting yes. It starts to drop off anywhere
from
5000 RPM to about 8500 RPM. The HP peak can be as high as 9000 RPM.
Peripheral ports, such as used by Power Sport, which are straight shots
into the rotor housings, are preferred for anything over 6000 RPM

i realize that this engine is unique, but is there no hp, torque and
specific fuel rate curve ?

Here is a chart of HP verses RPM and BSFC for a Mazda four rotor PP port
Leman winning engine and a picture.

_____________________________________________________________________________

paul--thanx much for the reply to my questions and the really cool pic of the
4 rotor-really appreciate it. we are developing a belt drive for the 13b and
trying to decide on the optimum gear ratio from a rpm-hp-sfc curve if
availiable--anybody out there have one or constructive ideas ? ive noted the
some of the discussions on rpm here and cant come to a positive answer
yet--thanx again       tom k

Several people have belt drives. Ken Welter in the Coot comes to mind
for one.

Paul Lamar

Make sure you have dual bearings on both pulleys on your belt drive.
Don't yield to the temptation to use the eshaft bearing by attaching the
pulley directly to the eshaft.  The eshaft must ONLY put out torque,
NO side loads.

Bill
Long EZ builder & pilot
BSME, MSME

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