Paul, I am drawing up  a full set of RX8 side housings for
aviation use with several changes from stock. The cooling water
will be introduced and returned from the center housing. All
housings are two piece construction divided in the center of the
water manifold with the running surface of cast iron half the
thickness of a center housing and the remainder of aluminum. the
drive end aluminum section will mate to the dimensions on this
site two weeks ago for tracy crooks RWS planetary  6 pinion
drive, and include four extra bell housing bolts.


the accessory
end aluminum housing will be flanged to mate with  a rear
housing  of the second engine for a four rotor. I am attempting
a 6  rotor engine for enough power to do something stupid.
Anyway the flanged connector housings will be "O" ringed oil
tight and hollow dowelled to match the rotor housings. stock
thru bolts will be used making the engine modular. rotor cooling
oil will be thru drilled passages
to the barnes gearotor dry sump pumps.


An additional drilled
breather passage will vent the housings.This will be the start
of an inverted oil system because it is easier to CNC as are the
open face water jackets of the two piece housings. A big block
chevrolet  sprint car water pump will be manifolded th the
center housings water inlets. Porting is similar to  RX8 with
the exhaust unchanged and the intake opening stock and the
closing similar to an RX7 6 port but closing earlier. the
intermediate housing intakes will be more like the end housing
to increase port open area, and all ports are CNC machined and
reangled to more closely follow rotor rotation. I am also
investigating adding integral motor mount pads to match a
lycosarus pattern and  rubber bushings on the accessory end.
This is just an overview without getting  mired down in the
finer details.


     I took apart one of the RX8 engines and
used a telephoto lens on a 15
megapixel camera ( less angular distortion) to make images
which I scalled up by a factor of 100, then drew over with CAD
followed by reducing back to the actual size. This has provided
sufficient accuracy to machine the casting paterns, however I
need the accuracy of factory drawings oe a electronically
scanned front housing(can be RX7) for the hollow dowels and
through bolts similar to the RWS  6 pinion mounting dimensions
on this site two weeks ago.

I also could use the shaft location
of the oil injection pump for it's intended purpose or to drive
the governor for a constant speed prop. ignition and fuel
injection control will be RWS also as it is configured for uo to
6 cylinders. I have had no luck finding dimensions  after
extensive looking on the internet. I am hoping that after a
deckade of aviation development someone has saved these
dimensions. Racing Beat etc sell replacement aluminum side
housings  so they aparently came up with
dimension. So if anyone out there can help I would really
appreciate it.

When I get finished drawings and G-code will be
made available for about $4 to coved a DVD disk and postage, or
I can send it to this site for download. I am outsourcing the
castings, and unmachined castings could be provided from the
foundary.If someone has dimensions and is concerned about
liability and o course I
follow this site.        GG

George Grimes