Paul wrote:

With aluminum end housings the piston engine

can't come close on

power to weight ratio of the Mazda rotary

either. I think Mazda

aluminum end housings are inevitable sooner or

later. The Diamond

engine has them and it is putting out 115 HP

while weighing under 160

pounds (as I recall) PSRU included.

Fred Osborn wrote:

Does anyone know what the inner surface of the

Diamond aluminum end

housings is made of or coated with?

They told us and I did not write it down. Mark

Wrathal wrote it down I

think. Mark?
It is flame sprayed something or other. Not

Nicosil. The rotor housing

is Nicosil.
It is quite thick as there is a slight recess

machined in the end

housing to accept
the coating. If it were me I would just put

hardened and ground sheet

steel in there.

Paul Lamar

Wow, that is quite a bit smaller than the Mazda.

Are there any plans on

a 4 rotor version?

Chris C.

As I recall we talked about that and they said no.

Paul Lamar

-Kevin Richey wrote:

Paul & others on the rotary list:

Would a nickel or chrome plating work with the temps
that the housings (rotor or end) see in the RCE?

How about wearability for the seals (both side and
apex) on such a coating?

Kevin

See above message.

Paul Lamar
 
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