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Discussion Starter #63
I like how the inside of the back tires are almost where the outside of the front tires are.:lol: There is an FB sitting in my parent's neightbors barn in near mint condition, white with blue interior and meshies... except the engine is blown with only 44,XXX on the clock. The old guy siad he knows what it's worth and won't let it go for less than $30,000, yeah right!

Personally I think with those big whale tail spoilers they start to look a little like a Porsche.
 

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There was a certain member on this forum who boldly claimed that "NO ROTARY CAN EVER MAKE A THOUSAND HORSEPOWER OR MORE" and that "EVEN A 20B IS LIMITED TO ABOUT 700HP MAXIMUM"
Thats clearly bullshit....Ian Boettcher used to regularly get 600+ from his supercharged 13B, which would translate to 900+ on a 20B at the same boost.

I have seen 400Hp from fuel injected (sequential) PP 13B motors, once again translated to 20B would be around 600. I say this would be about the limit NA.

the 400 was hit around 9000Rpm.

If thats still not enough, I have heard of people building their own R26B by bolting two 13B engines together.
 

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Discussion Starter #65
Yeah the dual 13Bs, that's where you get the quad rotors from. Uses a custom shaft to bridge the two together, from what I have read before.
 

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RX3 flamethrower.

This is car is a local at my autocross events. Multi time champion car/driver. Always under development to be faster. To that end, this is his latest development......



Anyone care to take a guess?

Gavin
 

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Discussion Starter #68
Ya it's hard to tell whats going on with the shield in place. The intake sits really high off the top of the motor, almost looks like a velocity stack or something.
 

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^It looks like a ram-air idea. The box is probably in place for a scoop of some sort as the upper seal makes it appear as if to seal to a hood.
 

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I posted that car for a reason.... :D GF and i are getting an FB this spring as a backup car while we finish next round of upgrades on my Celica and the Escort. Then that picture will become VERY relevant to our interests. The car is already lined up.

I've already been in contact with the company that manufactures those body panels. It's a go.

I haven't done a ground up build in a few years, and this was something that immediately dropped both of our jaws.


Gavin, i've seen that RX3 all over the internet... i think it was in the GRM magazine at one point, too. :)

Have some more....










 

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Individual throttle bodies??Would be weird, but interesting.
Yes that would be weird, but no..thats not it ;)

almost looks like a velocity stack or something.
Well, the runners are bellmouthed, so yeah They have velocity stacks. But thats not it exactly either.

^It looks like a ram-air idea. The box is probably in place for a scoop of some sort as the upper seal makes it appear as if to seal to a hood.
No ram air. You may have missed the snorkel tube going to the bottom of the engine bay. Thats where the sealed airbox (its sealed on top to the hood) gets its air from.

The answer actually is........Variable length intake runners.

The setup is RPM actuated. I think the owner (Tom Ellam) got the idea looking at a newer sportbike (I want to say Gixxer 1000) and adopted the idea to his car. Tom is somewhat inventive :)

Gavin
 

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Discussion Starter #73
I wondered why there where two sets of intake pipes! I thought maybe there was another piece that went on the top of that thing.
He must be inventive to be messing with that sort of thing, looks like it cost him a little bit to go with that setup.
 

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One of tha causes for tha rotary's poor emissions and mileage is illustrated by that animation. Like a piston engine with a radical cam the fresh intake charge is exposed to the exhaust port for a time and that allows good cool air and un burned fuel to escape the chamber.

This is mostly a low RPM issue (also like the radical camed piston engine) and it has been addressed pretty well in the renisis version, but I'm wondering if anyone else thinks the rotary would benifit from direct injection?

If the fuel is not injected until the trailing seal has passed the exhaust port the contamination becomes a non issue, less fuel needs to be injected for a given A/F ratio and emissions go down as well.

I have also thought about strictly timed sequential port injection, but my thought is that even at low RPM where the problem is most prevelant the time between the exhaust being closed off and the intake being closed off would be very small. (you could actualy start injecting some time before hand but not much) That would require primary injectors of a much larger than normal size to flow enough fuel in a fraction of the time a normal set would have.

The injectors would still have to be precise and thats something thats not easily done as injectors get drastically larger.

At higher RPM the issue becomes less prevelant so at some point the injectors could return to a more normal duty cycle. Infact as RPM climbs and the time between the exh port being closed and the int port remaining open gets smaller and smaller it would quickly become impossible to inject enough fuel in the available window.

Thoughts? Opinion? Ideas?
 

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I'll get back to that later ls six, I just want to mention that I've been thinking about a new rotary concept which would involve a sort of Cam and Piston IN the rotor.

It would basically be a completely round engine, not the peanut shape that the current one has. Keeping the 3 chamber system, the deeper part of the rotor face would be like a piston. After passing over the intake port and being fully sealed by the "apex" seal, the "cam" would push the "piston" to compress the air/fuel mixture and allow it to combust. I know it's vague and hard to picture now, but I'll draw it up tonight and scan it to show you guys what I mean. I obviously don't have any training as an engineer, but this idea I have would be worth discussing IMO.
 
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