Hmm, the guys on this forum sure know what they are taking about.
Yes , the Fairchild-Caminez Cam Engine was flying, and yes the weight of de rollerbearings doubled the weight of the pistons ( doubling Inertie )
The Caminez was not a rotary, it was a radial (rotating cam ).
In WOII a dutch airplane and motorcycle builder Joop Carly launched a engine called "Wondertol". It was a caminez with a fixed cam, a rotating cylinder bank AND with a fixed outerring. A predessor of Wankel. ( http://dl.dropbox.com/u/16914589/RBR...0Wondertol.jpg
Porche didn't knew that and patented this : http://ip.com/patent/US3077870
Recently Jerry Hale built a working one, I think it's already mentioned on this forum :
Besides the different drive mechanism, my cylinder bank is rotating 5 times slower and in opposite direction than/of the crankshaft. Bi-rotary
. Giving less wear on the - lets say - apex seals.
This results in 12 ignitions per cylinder bank revolution, done by 5 revolutions of the crankshaft.
Wankel has 3 ingitions per rotor revolution, done by 3 revolutions of the crankshaft.
In fact, this single block engine is 2.5 times a wankel ( 2.5 ignitions per 1 revolution crankshaft , wankel is 1 to 1 )