Pau,
Do you know of any work that has been done with rotaries in which rollers were used at the tip seats in order to reduce friction?

Next question.  Do you know if anyone has played around with either graphite alloy for rotor and/or housing in order to eliminate tip seals?
jd


Friction is not a problem in the rotary. It is much less than a piston engine.

Nor is seal life. Silicon Nitride seals have a projected life of 20,000 hours.

That is longer than I will live :)

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