Paul


  Picked up the engine today..dusted it off and it still looks good. It's
  been about 15 years since being turned over, still has compression...

  there is some damage on one intake runner that  got banged in and the
  fuel injector lines in various places are dinged....


  Ross reduction unit has 4 planets and a bunch of end play......Was this
  designed for CS prop??? the engine is setup for it.......


  Not sure what to do with it but I think its time to disassemble,
  inspect, rebuild for display only.....pull what ever info or ideas that
  are worthwhile...


  jeff

  Sure is beautiful. It needs an airplane :)

  Not a CS prop PSRU. Probably a 2.17:1. I think it can be converted
  to a six pinion 2.85 to get the prop to rotate in the right direction
  and allow the engine to rev up and gain a little HP. It probably
  also needs a thrust bearing added for the sun gear.

  Paul Lamar

 Jeff,

 Curious as to how you ended up with this engine in the first place? I
knew
 the original owner for a lot of years and first approached him about
 putting
 the engine on my RV-4 about 10 years ago. At the time he was looking to
 market the engine and I thought it might help to get it on an
airframe and
 get some visibility. He declined. Last time I saw him about a year
ago he
 asked me if I was still interested but by then my engine was
installed and
 running so I said no. I think he regretted turning me down. I recently
 heard
 he'd died and I wondered what happened to it. You've got a real nice
piece
 of work there. Hope its going on an airplane and finally going to fly
soon.
 I would recommend dumping the Ross drive though - Maurice had
problems with
 it and was going to switch to an RWS drive.

 Mike Wills

 I like it because it is better designed and therefor 10 pounds
lighter than
 Tracy's.
 Two inch hollow prop shaft (stiffer, stronger) and better housing
casting.

 Paul Lamar

 Jeff,  It sure would  be nice i you could post a pictue of the
disassembled
front drive
pieces while you have it apart.Now that engine mounting and intake
systems
are well
sorted out the accessory end might need an aircraft inspired upgrade.
Things
like a dry
sump oil pump drive for aerobatic use and a constant speed prop
governor and
pump.
Mounting the waterpump on the lower cool side nearer to the  radiator
might
also be a
consideration.

Paul,

       I had been thinking about some plan to boost the horsepower
through
some type of
exhaust header using piston engine theory. I have come to the conclusion
that this is impossible
because the exhaust and intake chambers of a rotary are sealed off
from one
another which prevents
the exhaust from influencing the intake pressure. Some gain from organ
pipe
tuning may be of
benefit to exhaust scavanging however minimal reduction in pumping
losses on
the exhaust side
due to the short stroke and 3 to 1 ratio of the E-shaft to rotor reducing
the torqe required for pumping.
I still like the idea of the 90 degree inversion cones  to reduce sound
levels These could probable be
welded in to the external case of the muffler with cooling air
exposure on
the outside.

          This reply is done from the G-mail off the google page
rather than
the igoogle gadget page
I have been using. If it is tripple spaced again could you let me know?
Most of the parts for the
3.4 Ghz computer have arrived. I upped the ram to 8 Gb and 1 Gb on the
video
card. As far
as I can tell I have to use windows seven to access more than 4 Gb of
ram so
I added that to my
april budget.

george grimes

When it comes to the 13B or p-port engines I think you are wrong about:

"I have come to the conclusion that this is impossible
because the exhaust and intake chambers of a rotary are sealed off
from one
another which prevents the exhaust from influencing the intake pressure."

In a double p-port engine (exhaust and intake) there is a strong
influence due to the rotor depression.

That editor or email program worked OK.

Paul Lamar


Jeff wrote:

Paul


I will keep photo track of the disassembly and send to you these
pictures along the way if that is your thought...

It already has dry sump and inverted flight capability............


Goerge

I had the idea of using a RX8 end housings with a Rx7 exhaust P-port
rotor housings.......the exhaust outlet would be large and broken-up
that may aid in noise suppression..Large bell mouth to cover all ports
at once funneled down to the exhaust pipe...


Some of the heat scrubbed off to the end housing carried off through
water jacket, possible lower exhaust temp slightly.   Exhaust  gases
moving out in multiple directions and velocities could suppress some of
the noise signature when converging back in the exhaust
bell mouth cone......

I am sure someone came up with this long ago and I am to new to know
better,,but what could be the down side???...

jeff