Just wondering how the Rotamax differs from the Mazda 13B?

I noticed that the 2-rotor Rotamax is rated at 150 horsepower, but
weighs only 150 pounds. Is aluminum substituted in some of the castings?

It also appears to have only two intake ports, which seems nice and
simple. Any downside to this?

Also any general opinion on these engines would be appreciated -- there
is very little info on the website.

At first glance it seems like a very attractive package. With a gearbox
and cooling system, total weight would probably not exceed 200 pounds by
much. And the price is right too.

Regards,

Gordon Arnaut
Ontario, Canada.

The first thing you have to remember is it is vapor wear until
somebody actually sees one running in some application of some kind.
And even then unless they copy the Mazda steel rotor housing
liner the durability, life and quality control is questionable.
Not to mention the durability, life and quality control of the
aluminum end housing coatings. If I were them and doing a rotary I would
copy the Mazda exactly. 2,000,000 Mazda rotary engines have
been sold and still improvements are being made.
Many companies have failed trying to build rotary engines
and that includes General Motors. Mistral is taking the right
tack and copying the Mazda.

Paul Lamar


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