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PetrolAholic
99 posts
51 months
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0-250mph in 4.8 Seconds? That HAS to be a MASSIVE type...
Thats... from... now *stares at office clock* to now and i'm doing 250mph?
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doogz
18,670 posts
56 months
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Crusoe
2,645 posts
100 months
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Already 4 rotor convertions for 1.3lr mazda that run over 1000bhp with big turbos, and the N/A Mazda race engines were making about 750bhp for 2.6l. Adding some turbos to the race spec engine could make the power they claim [though not get anywhere near putting the power to the road for the figures] they are after, though expect to stop at every garage you pass for fuel. Four rotor wankel sound rather fantastic too. http://vimeo.com/13278462
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DJRC
19,823 posts
105 months
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Hell I hope they make it. If for no other reason than I just want to see a roadcar try and lay down that much power and what happens.
Somehow I think Ill be next to the Pirelli, Michelin, Goodyear and Bridgestone chaps all rolling around on the floor killing ourselves laughing.
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C15
315 posts
112 months
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Specifications will be updated at regular intervals. DOWNWARDS at the rate of 600km/h - 0 in 7 secs...
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timmeh2k
15 posts
21 months
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Mr Whippy said: 3.1g ish acceleration. What tyres is it going to use  If it's on a drag strip with drag wheels/tyres, maybe?! I'd imagine 1.2-1.3g acceleration is about the limit for road car tyres to 60/100mph ish until down-force can give you a bit more to work with... Dave Top fuel drag cars push 4 g acceleration so yeah there is no way they could get road legal tyres that would be able to handle 3.1 g even with 405/20R22 rear tyres
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Hartge210
817 posts
66 months
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Adrian W
8,117 posts
97 months
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I thought four rotor engines self destructed when you try to extract large power outputs, due to crank whip.
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chrisgtx
468 posts
79 months
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The emissions seems a bit dubious to me,if Mazda can't manage it i doubt these lot will,especially the amount of power they plan to push out.
I bet it would sound nice though,google 4 rotor RX8.
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fathomfive
6,883 posts
59 months
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Adrian W said: I thought four rotor engines self destructed when you try to extract large power outputs, due to crank whip. It doesn't matter though when it's all held together with large amounts of bulls  t
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jon-
11,648 posts
85 months
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chrisgtx said: The emissions seems a bit dubious to me,if Mazda can't manage it i doubt these lot will,especially the amount of power they plan to push out.
I bet it would sound nice though,google 4 rotor RX8. IIRC the Mazda rotary is a pretty poor design. One engineer friend was telling me he was mid way through designing a rotary engine which would improve on mazda efforts in every way. Oh, and there's no road legal tyre that will allow anything close to those times printed.
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spud989
1,105 posts
49 months
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There's more chance of the Queen fellating Colonel Gaddafi in the Big Brother house than this happening.
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WCZ
1,463 posts
63 months
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Robmarriott
473 posts
27 months
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Ok, so Queen Street Rotary in New Zealand have extracted 1664bhp from a 4 rotor, but that's in a drag car with 2 of the biggest turbos I've ever seen.
1200bhp from a road going version seems possible but that's only 450odd bhp less than a drag car which gets 'serviced' every run.
Let's say that's theoretically possible though, as I suppose it is...
The 8 rotor version however, 2800bhp... that's more than twice what they quote for the 'half' engine, which again, I suppose is possible as we all know that in most cases and engine can produce greater power than the sum of it's parts (Powertec V8 for example) but, that's going to need 4 rather substantial turbos, which are going to totally ruin it for road use.
Tyres, again, possible if it runs on drag radials, but I seem to remember SSC quoting silly 0-60 figures which never came to fruition?
0-60 in 0.9 seconds is what, top alcohol drag car speed? not a chance on a road car using DOT approved tyres.
I'm intrigued though, I've always wanted to see a wankel engine with more than 4 rotors.
When I worked in Coventry there was a local rotary specialist who had a mocked up 6 rotor and it was massive, should have made about 1000bhp naturally aspirated too, but would have been to expensive to engineer as the crank was so long it would have flexed all over the shop.
I don't think it can be done, unless they're running 2 engines side by side, a la "U" engine? that should eliminate eccentric shaft issues and space problems too, an 8 rotor engine would be really rather long.
Also, it'd need 16 spark plugs, or maybe even 24 (if they run it like the 787B 26B engine) which at £25 a pop, at trade prices, isn't going to be a cheap service.
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Mini1275
9,417 posts
51 months
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I bet it would sound amazing. Obviously they could get the BHP they're saying, but those figures  . I'm not so sure.
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Dagnut
2,968 posts
62 months
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Do they sell magic beans?
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doogz
18,670 posts
56 months
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Surely, as with the Veyron, cooling is going to be a serious issue as well, running that many rotors and turbochargers, and producing that much power?
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Devil2575
4,402 posts
57 months
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Oddball RS said: 0-62mph in 0.9secs
How? Sounds very much to me like someone has been calculating accelleration figures by extrapolation of exisiting data. I suspect in reality it might not be quite that quick...
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Megaflow
3,341 posts
94 months
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 Yes, of course you are, you are really going to achieve top fuel dragster, loosely, levels of acceleration out of a homologated road legal production car aren't you... T s.
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robinessex
729 posts
50 months
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