Doug,

The R.A.V.E. valve is on the exhaust side of the Rotax engines, the rotary
valve is on the intake side. Many of the Rotax mills are of a reed valve
design(still in conjunction with the RAVE), now, as are all of the
Suzukis(Arctic Cats), Yamahas, and Fujis(Polaris). I personally have had
very good experience with the rotary valved Rotax... good power and great
reliability. Seeing also that about 30 years ago, Bombardier bought all
remaining shares of Rotax they did not yet own, I doubt they will install
any different power in their vehicles.

Rob
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"Doug Meredith" wrote in message
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"Gene Kearns" wrote in message
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Bulletproof? Right. Unfamiliar with Rotax marine engines.... I told
a friend that they seemed to make a pretty good engine for the
Experimental Aircraft market.

He bought the boat and within a year both engines were toast because
the engineers designed the carburetors to be (carbs?) cooled with raw
water.

Let's see.... zinc bearing metal and sea water.... whatta we got
here?

Nope. He doesn't use the term "bulletproof" to describe them.


I've had 6 Ski-Doo's all of course with the Rotax engine zero problem.
As far as RAVE goes, it must not be any good. Thats why the other
builders have copied it.

Sea-Doo had a problem with one of their 900 cc class engines in their
PWC's. Since fixed.