It occurred to me that the RX8 rotor housings have the O-ring slots.
Therefore the end housing can be real simple. The steel wear surface
is just the cheese in the simple sandwich. It can even be chrome
plated just like the rotor housing for a super low wear and a super
smooth surface. When over haul times comes (if ever) it can be
replaced or refinished. One of the cheap ways of making these things
is chemical etching. One large O-ring seals the steel wear surface to
the aluminium end housing.
Light weight end housing are essential for 120 HP one rotor light
sport engines.
An external AN hose oil gallery further simplifies the engine. An oil
scavenge pump replaces the stock oil pump and scavenges the rotor
cooling oil drain back, front and rear main bearing drain back. An
after market combined oil pressure and scavenge pump is used. Here is
one from Barnes.
These are ideas Jim Mederer, owner of Racing Beat, used on the time
to climb engine.
The end housing themselves can be NC machined billet. No need of
castings.
Paul Lamar
Hi Paul,
I have looked into end covers for a friend and we are considering
the viability of bonding a thin SS sheet to the Al end plate with
Hi temp glue which is available at a reasonable price. The best
option is to use elevated cure temperature and press to provide
the pressure at the same time. The idea came from an electric
frying pan that that has been used at home for over 30 years at
least 5 times a week and is as good as new and it has a SS skin
bonded to it on the inside. What are your thoughts on this idea?
Col
I have not heard of glue that will support those kinds of temperature.
Steel can be braised to aluminium.
The idea is two piece end housing don't require hollow castings with
core boxes. They can be machined on NC mills.
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Paul Lamar
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