That is the beauty of the turbo rotary. It will put out as much power as TWO

aircraft engines at 650 HP  and weigh less than 200 pounds in the bargain with
out the gear box. Gear box is roughly 50 pounds.  That says a lot about the
shear robustness of the Mazda rotary. It is atomic bomb prof :-)

Watch and listen to this video.

Paul Lamar

650hp from a rotary makes me dare to dream.
I have read most of your site and enjoy your newsgroup. I still have doubts about some of your more extreme claims though.

1. What is the fwf weight of the 650hp ttc engine you put together? (Are you not running special fuel to achieve that?)

2. I have the preconceived notion that an engine setup like this is much different than a day-to-day engine you expect to fly 1000+hrs on.

3. Why haven't I read about any 500+hp rotarys flying around?

4. What do you honestly/realistically see as a high power 500+hp option for power, weight, and longevity.

650hp you are talking King Air size, comfort, and performance on a Homebuilders budget.... like I said you make me dare to dream.

75% scale homebuilt version of the Dornier Seastar I linked earlier would make me drool.


Narfi Willem

1.  The FW forward weight of the TTC airplane is less than 275 pounds.
I have a friend getting 900 HP on a 3 rotor running on gasoline for the world drift show.
Our engine would easily put out 500 HP on gasoline. There is nothing trick about
it except the aluminum end housings. The rotor housings, e-shaft and rotors are stock.
The rotor housing have a low cost  p-port modification. It is using an off the shelf EFI.

2. We only run it up to 7000 RPM. The Le Mans winning  aluminum
4 rotor averaged 8500 RPM for 24 hours and no wear was detected.
My RX8 is red lined at 9000 RPM.

3. So far we have only been off the ground for ten feet three times.
It leaves the ground in 4 seconds in less than 100 feet at half throttle.
Empty weight of the airplane is about 1000 pounds. 450 pounds lighter than
with the 260 HP six cylinder  engine the Harmon Rocket came with.

I thought we were going to fly it tomorrow but our UAL 777 pilot got
called away to fly a UAL 777 somewhere in the world.

New schedule date to fly it is the 4th of October. It is designed to get the world absolute
record to climb to 10,000 feet from a dead stop on the runway. Currently held by
a WW II Bearcat at 91 seconds.

In 18 years of experience on this news letter people die or loose interest in aviation
very roughly around 1000 flight hours. Nobody has worn a rotary out flying it yet.
Several had well over 1400 hours.

I have had  two Mazda rotary powered cars with over 300,000 miles and the engine was still
running fine. I see many first gen Mazda RX7's on the freeways that are 30 years old.
2.5 million rotary powered cars have been sold. My first was an RX2. That was
in 1973.

Rotaries are not legal for aviation commercial use or pilot training. There you
are likely to expect aircraft piston  engine life of 2000 to 2500 hours.

The apex seals are the main parts that see wear normally. The only measurement  i have
seen for silicon nitride apex  seal life is 20,000 hours. Not 2,000 hours. 20,000 HOURS !!!!!

In general the vast majority of people in the world are highly resistant to new ideas :-)
They don't like to think that what they have is obsolete and worthless. They are also
incapable of rational thought :-)

I highly recommend an excellent 500 page  book on the history of aviation called "Air Power".
Written by Stephen Budiansky. 73% gave it five stars on Amazon.

Paul Lamar

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