Speed Talk

by **Torquemonster** » Mon Nov 20, 2006 1:12 am

Recently someone was talking about a multiple rotary engine for power.

Found this - the sound you can hear dominating this video is the Mazda that won LeMans. Sounds a lot better than the twin rotor engines!

Thought some here might enjoy hearing it

http://videos.streetfire.net/video/459c ... 6d974a.htm

by **SWR** » Mon Nov 20, 2006 2:46 am

Couple more. The sound grows on you...
http://videos.streetfire.net/video/70488214-ce83-48b2-bc0d-e9b42a7d7c75.htm
http://videos.streetfire.net/video/2ec0470c-6163-4302-9a0f-1e4dc362c3fb.htm

by **ROGUE GTS** » Mon Nov 20, 2006 5:28 am

Wow thats CRAAAAAZY :shock:

It idles like a fuel car and revs like a 2 stroke dirtbike. The sound when he revs it is very much like a nitro RC car... on crack. :lol:

Were they fast/powerful?

Hey Barry. . . How about a Diesel :shock:

ala audi R10 :twisted:

by **Eric68** » Mon Nov 20, 2006 10:26 am

Very cool.

It does have a major lope at idle, I thought it sounded like it was on a two step when he raised the RPM just off-idle -- almost sounded like it was missing, but when free-reving response was immediate and it was "all there" . . . cool.

Thanks for posting

by **MadBill** » Mon Nov 20, 2006 11:09 am

After being pitted beside one at the track for a few hours, it doesn't sound nearly so cool! Not only that, the drivers must all carry Harley rider DNA; they're constantly blipping the gas. Last big race at Mosport we loaded everything back into the trailer first chance we got and moved as far away as we could from a wild-motored RX7 ...

by **Torquemonster** » Mon Nov 20, 2006 1:25 pm

ROGUE GTS wrote:Wow thats CRAAAAAZY It idles like a fuel car and revs like a 2 stroke dirtbike. The sound when he revs it is very much like a nitro RC car... on crack.

Were they fast/powerful?

Hey Barry. . . How about a Diesel ala audi R10

cc = 4 x 654
700hp at a low 8000rpm (low for a rotory) - naturally aspirated

The sound under load is a lot less tiny and annoying - I also have a wav file of it racing under load and it sounds even better isolated without the single seater near it - but can't upload it here.

RogueGTS - ANY ICE can be turned into a diesel thanks to Professor Poring (ex Naval Academy) of Sonex Research. He took me thru his lab in Annapolis - very interesting! Via a unique piston design - even a low compression (even well under 8:1) will fire without spark. He replaces the sparkplugs with a direct injector aimed strategically. The engine will run on gas, diesel, JP5 etc. Obvious military application = lightweight JP5 engines.

For road use - heaps of applications as they will rpm like no diesel can!!! They've seen 8000rpm from a Subaru boxer and were looking for 400hp from the turbocharged 4. Not bad with no spark. They need a lot more air however than a conventional engine.

I haven't forgotten them

:wink:

that's for some future play money

by **Noob** » Tue Nov 21, 2006 2:21 pm

after racing against that 787 car and other RX7's.. I'm convinced that the amount of HP produced is exponentially related to the amount of time working/porting/rebuilding that engine goes through.. very few rotarys can make 24 hours endurance racing and competitive power.

by **timdog** » Tue Nov 21, 2006 6:52 pm

Here is another
http://videos.streetfire.net/search/rot ... c68809.htm

by **Torquemonster** » Tue Nov 21, 2006 7:14 pm

timdog wrote:Here is another
http://videos.streetfire.net/search/rot ... c68809.htm

hey - that's my home track! lol about 90 minutes away

Noob - yes - everything I've heard tells me the same thing - not my scene - but I appreciate the efforts that go into them

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