Paul,
I have some scrap 13B housings now and I still can't imagine where to drill
the hole for a third plug that won't end up letting water into the engine.
It seems the only possible solution is to braze some more aluminum into the
water passage and then to drill a small spark hole down through the filler
and through the stainless liner. Next the hole plug hole needs to be
enlarged and tapped to except a spark plug.
I think the R26B housings were probably specially cast. It would nice just
to find a few of those laying about my friend's shop. That and a linear
bearing slide throttle and water pump. Ahhhh yes If pigs could fly:)
Notice how the injectors which appear at location #1 are located and angled
down just before the slide throttle. In item #2 it appears high pressure
lines are coming from the tubular fuel rail and heading towards some other
unseen injectors which if like other racing applications we have seen, are
installed directly into the housing above the intake P ports.
Somewhere on the engine top beneath all of the clutter and behind the water
pump is said to reside an oil reservoir. I can't imagine where. It looks
more like the whole front housing is a large reservoir.
Doug in Japan.
What kind of file was that Doug? It had no extension
and it was not a jpg, gif or doc file.
What you do is bore a hole in the rotor housing for a solid
cylinder. tig weld it in and then machine a spark plug
hole. Or if you don't want to tig weld it in thread
the hole and thread the cylinder and screw it in.
Seal with high temp epoxy. JB weld will probably work.
A lot of work for less than 3% better BSFC.
Have you given up on the 20% better BSFC turbo compound?
My turbine gear box is close to being done. We had some
set backs in the grinding process but things are moving
along somewhat slowly now.
-------------------------------------------
Only Linux gimp was able to open it. Some sort of strange
jpg. Here it is exported from gimp as a REAL jpg :)
That is a custom front cover so that looks like
where the oil reservoir is. That is a good idea
and perhaps the RX8 engine uses that to increase
the oil storage volume above the level of the oil pan.
That is a picture of the 4 rotor that I have never
seen before. Where did you get that one Doug?
Most of the pictures I have seen and
the engine I saw in the museum in Hiroshima and Seven
Stock did not look like that injection system or front
cover.
The next two are pictures I took.
The last picture is of the engine in the museum.
Paul Lamar ...No rotor no motor.
Howdy Paul,
The R26B JPG, sorry Japanese Adobe PhotoShop software file, originally
came from the net on Craig's rotary page. It looks like he posted some new
ones lately.
Roger on the TIG. My only concern was whether I could actually get a wire
and/or the welding tip in there to weld completely around an insert. JB Weld
may not hold up on the hot side of the engine.
Next.. 1 lb off here 3 lbs off there. 1% improvement here and 3% improvement
there. It all adds up to respectable numbers. My plane is over 150lbs
lighter now. As for the engine we need to make it as efficient as possible
to change the paradigm. Some day in the near future if I am 100% confident
aluminum side housing are durable enough I'll want them also. Yes it is
time consuming making a good engine and sometimes I find myself go backwards
wondering where the starting point is. So perhaps the approach is a little
'cough cough' anal but I enjoy it. The building that is:)
As for giving up on the turbo compounding not at all my friend. I have
revved the ROTREX traction drive up to a steady 8,000 rpm at the Tokyo lab
for an hour with a 7 HP motor and have had no cooling problems. It has a
500 cc reservoir. Next I want to try it at higher power settings on an
motorcycle engine with a the multi v belt pulleys they supplied and put a
load on it and measure torque. This may require running the traction oil
through a small radiator. If everything is solid I will buy the gear drive
innards of the next size up and use the present one to supercharge the
engine and then find a large turbine dedicated to power the compound only.
Power going in the engine rear from the turbine and power coming out the
rear to the supercharger. An e-shaft in between. What's not to like?
Doug in Japan
I am kind of curious about something. If you turn the
Rotrex compressor end with you fingers can you feel any friction
or break away torque? Mine is a few days away from being assembled.
Paul Lamar
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