A new type of flat engine design

Steve C · Post by **Steve C** » Fri Aug 09, 2002 4:24 am

Hi

I went to a trade night at REVETEC Limited the other night. They had new type of engine that has been invented. Go to this website to find out more info http://www.revetec.com/

Steve C

PapaG · Post by **PapaG** » Fri Aug 09, 2002 8:23 am

Kind of cool.
Looks like a VW boxer, Alfa ,suburu, Porsche and a Rotary all mixed together....
I have to give it to you guys downunder you have some cool stuff...

Makes me want to move, only if you used the right side of the road

goatmaster187 · Post by **goatmaster187** » Fri Aug 09, 2002 9:53 pm

I ran across another interesting engine design. It's called the Erickson engine. A rotary expansion engine. The only thing is that it is only offered in model plane size of a cubic inch or so.

Steve C · Post by **Steve C** » Sat Aug 10, 2002 4:58 am

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by PapaG:
Makes me want to move, only if you used the right side of the road <HR></BLOCKQUOTE>

We just drive on the right side of the car.

Apprently these motors will be coming to the states in trikes made down here.

Murdock · Post by **Murdock** » Mon Aug 26, 2002 5:40 pm

man, that was a good read. My current major is mechanical engineering and someday down the line when im through with college, my dream job would be to research new engine designs like this..Thanks for the link!! Any other links that you people are hiding?

reub-revhead · Post by **reub-revhead** » Tue Aug 27, 2002 3:15 am

Hey Steve,

Pretty cool. I did a post (and probably should have done one here) in the volksrodders forum. Lets see if this one stays in Australia or walks overseas due to lack of local investment. MMMMMM

------------------
Reub-Revhead
VolksROD Enthusiast
[email protected]
http://photos.yahoo.com/volxrod

Steve C · Post by **Steve C** » Sun Sep 01, 2002 3:56 am

Hi reub-revhead

I didnt see your other post.

Like everthing we invent down here it needs to go overseas to make money.

Australian Firsts and Inventions

Democratic Firsts

First place in the world to have a secret ballot in elections (1856)
First Place in the world to give women the vote. (1894)

Legal Firsts
Torrens Title. An Australian invented the worlds first method of land registration. Now in use by many countries around the world.

Sporting Firsts
First country in the world to beat America in the America's cup.
Only country to have attended every modern Olympic games.
The first country to employ skiing as a sport. (1863)
The Australian crawl. Until the 1890's competetive freestyle was done with the head out of the water. (Remember how Tarzan used to swim in the movies?) Australian Dick Cavill popularised it and enabled it to be accepted in world class meetings.

Inventions
The bionic ear, a device that enables some deaf children to hear.
Flexible wine casks... the bag in the box.
The boomerang. Ancient weapon of the aboriginies. Other cultures have throwing sticks but none came back to the thrower if it missed the target.
The Notepad. In the whole history of paper, it had been sold and used in single sheets until in 1902 JA Birchall thought it would be a good idea to stack a pile of half sheets together, back it with cardboard and glue one end. Making the world's first notepad.
Xerox photocopying process was the result of research by Prof O U Vonwiller from the University of Sydney published in 1907.
The Electric Drill was the invention of Arthur James Arnot, who patented it in 1889.
Postage stamps. The world's first pre paid postage system was introduced at Sydney in 1838.
The worlds first refrigeration plant was an Australian invention of 1858.
To our collective shame, the worlds first bathing beauty contest was held in Australia in 1920.
The famous "black box" flight recorder for recording aeroplane movements was invented in Australia in 1958.
Also in 1958 the worlds first regular 'round the world' airline service was begun.
The inflatable aircraft escape slide, which becomes a raft if the aeroplane ditches in water was an Australian invention of 1965.
The Automatic letter sorting machine - 1930
Two stroke lawn mower.
The rotary hoist washing line.
Lithium as a treatment for manic depression.
Latex gloves 1945

Military firsts
The underwater torpedo, Louis Brennan 1874
The tank (1912 - Lance de Mole)
Paper machine gun belt - dramatically reduced gun jamming while firing.

DaveM · Post by **DaveM** » Mon Sep 16, 2002 10:56 am

Hey:

You Oz-types also have a great sense of humour, good beer and V8 super car racing.

Thanks!!!

DaveM

goatmaster187 · Post by **goatmaster187** » Mon Sep 16, 2002 9:50 pm

Anyone ever hear of "negative supercharging"?

kit · Post by **kit** » Tue Sep 17, 2002 4:58 am

not heard of "negative supersharging" but I know some 2stroke diesel engines used a supercharger ot assist in scaveging the exhaust.The L7 engine in the Chieftain tank(British main Battle Tank before @1985)
used this. It also ran 2 cranks with the pistons running towards each other in the same bore.
kit

Post by **david58** » Thu Mar 01, 2007 7:19 am

That looks pretty sporty.

didget69 · Post by **didget69** » Thu Mar 01, 2007 6:53 pm

Steve C wrote:Hi reub-revhead

I didnt see your other post.

Like everthing we invent down here it needs to go overseas to make money.

Australian Firsts and Inventions

Democratic Firsts

First place in the world to have a secret ballot in elections (1856)
First Place in the world to give women the vote. (1894)

Legal Firsts
Torrens Title. An Australian invented the worlds first method of land registration. Now in use by many countries around the world.

Sporting Firsts
First country in the world to beat America in the America's cup.
Only country to have attended every modern Olympic games.
The first country to employ skiing as a sport. (1863)
The Australian crawl. Until the 1890's competetive freestyle was done with the head out of the water. (Remember how Tarzan used to swim in the movies?) Australian Dick Cavill popularised it and enabled it to be accepted in world class meetings.

Inventions
The bionic ear, a device that enables some deaf children to hear.
Flexible wine casks... the bag in the box.
The boomerang. Ancient weapon of the aboriginies. Other cultures have throwing sticks but none came back to the thrower if it missed the target.
The Notepad. In the whole history of paper, it had been sold and used in single sheets until in 1902 JA Birchall thought it would be a good idea to stack a pile of half sheets together, back it with cardboard and glue one end. Making the world's first notepad.
Xerox photocopying process was the result of research by Prof O U Vonwiller from the University of Sydney published in 1907.
The Electric Drill was the invention of Arthur James Arnot, who patented it in 1889.
Postage stamps. The world's first pre paid postage system was introduced at Sydney in 1838.
The worlds first refrigeration plant was an Australian invention of 1858.
To our collective shame, the worlds first bathing beauty contest was held in Australia in 1920.
The famous "black box" flight recorder for recording aeroplane movements was invented in Australia in 1958.
Also in 1958 the worlds first regular 'round the world' airline service was begun.
The inflatable aircraft escape slide, which becomes a raft if the aeroplane ditches in water was an Australian invention of 1965.
The Automatic letter sorting machine - 1930
Two stroke lawn mower.
The rotary hoist washing line.
Lithium as a treatment for manic depression.
Latex gloves 1945

Military firsts
The underwater torpedo, Louis Brennan 1874
The tank (1912 - Lance de Mole)
Paper machine gun belt - dramatically reduced gun jamming while firing.

And don't forget; in 1788, the British turned Australia into a penal colony...

(snicker, snicker... he said "penal"!)

But the Aussies do have some great V8 cars! And Vegemite!

bnc

didget69 · Post by **didget69** » Thu Mar 01, 2007 7:09 pm

PapaG wrote:Kind of cool.
Looks like a VW boxer, Alfa ,suburu, Porsche and a Rotary all mixed together....
I have to give it to you guys downunder you have some cool stuff...

Makes me want to move, only if you used the right side of the road

Heads on this version are Subaru, as are quite a few of the other components -

Another interesting engine/cylinder head idea... Coates rotary valve heads -

V8 version - tested on 5.0L smallblock

Excerpt from Coates website - www.coatesengine.com

"The Coates Spherical Rotary Valve Engine is the most advanced in the world, with the most positive valving system ever built. The breathing capabilities of the system are almost double that of a poppet valve. For instance: a static test of a five-litre poppet valve engine on an airflow machine produced a reading of 133 cubic feet per minute (CFM) with valve fully opened. The five-litre Coates Spherical Rotary Valve Engine on the same machine, however, produced a reading of 319 CFMs fully opened; a colossal advantage in airflow comparison. A five-litre poppet valve engine tested on a dynomometer under the same loads and conditions at 5500 produced 480 BHP and 454 foot pounds of torque. The maximum RPMs on the poppet valve engine were 5700 RPMs; the Spherical Rotary Valve Engine in comparison reached 14,850 RPM's."

I read in a follow-up article where one problem was in getting the engine bottom-end to hold up to the RPM potential of the heads -

bnc

petew · Post by **petew** » Mon Mar 05, 2007 6:08 pm

rotary valves VERY GOOD

revetec not so good. the idea of the motor is that it gets 6 power strokes per full crank revolution on a 4 cyl boxer as oppose to 2 with a normal crank. the thing is, it doesn't produce the equivalent of 6 power strokes.

Let me compare.
a 1600 toyota twin cam can make 100hp at 7500rpm.
the revetec of similar bore and stroke then should make 3 time this amount, say 300hp.

Look at the figures and it doesn't even get close to this.

It actually does little to increase the efficiency of the engine.

I just looked through the site again and the testing figures seem to have been removed. I wonder why?

subybaja · Post by **subybaja** » Tue Mar 06, 2007 10:28 pm

Cool, Didget! I've been trying to track those rotary valves down for the last 10 years! I saw them briefly in a performance mag when I was into Mustangs, and then couldn't find a single mention of them again.

I'm gonna be in Aus in 3 weeks...maybe I'll stop by and have a look!

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