New Mazda RX Vision concept

[zigzagz94]

http://www.motoring.com.au/news/mazd...o-rotary-44652




Been a while since we had rumors of the next spinning triangle power plant but motoring.com.au is reporting possible twin scroll turbo rotary putting out 335kw (455hp) :


"Rotary diehards would, of course, remember that Mazda's first-ever rotary-powered production car, the Cosmo Sport, was launched in 1967, making 2017 the 50th anniversary of that event.

Earlier this year, the prototype for this new RX-7 was said to employ a naturally-aspirated rotary engine based on the 16X configuration. Using "laser ignition" that test mule was said to produce around 225kW. In less than six months, Mazda has decided to add a twin-scroll turbo setup, expanding power to some 335kW.

We'd also heard that, in the absence of a suitable rear-wheel drive platform, Mazda was using a reinforced version of the next MX-5's platform which could accommodate the suggested 225kW. But now, with over 335kW on the table, Mazda has ditched the MX-5 underpinnings and reverted to a significantly rebuilt RX-8 platform for its test mule.


Given that Mazda plans to celebrate the rotary-powered Cosmo Sport's birthday of May 1967 with the launch of a new RX-7, it stands to reason that we will see the all-new model in May 2017. "

[Sideways&Smiling]

A shortened, more powerful RX8 sounds amazing. It also sounds like the new MX-5 platform won't be as rigid as it should be if they dropped it...

[cdrazic93]

What about a diesel rotory? Good emissions, and now they have to fix the apexi problem

[strat61caster]

Originally Posted by cdrazic93

What about a diesel rotory? Good emissions, and now they have to fix the apexi problem

One of the things holding the rotary back is the weight of the rotors, diesel would mean higher compression which means higher stress which means a beefed up engine which means heavier rotors and rotating mass, which means it would not rev as high as past gasoline examples. It may get enough torque to compensate for the lower redline but it's still a sacrifice worth noting.

Modern diesel isn't clean burning, they just have complex emissions control systems. One of the past problems with rotaries is that it is difficult to combust all of the fuel in the chamber meaning unburnt fuel in the exhaust (which is why you can find videos of rotaries shooting flames out the exhaust without even trying) which would put a huge tax on any emissions control system, let alone unburnt diesel fuel.

This is all contingent on you getting enough compression out of a rotary to make diesel cycle work which has been tough from my limited amount of reading.

[Superhatch]

Originally Posted by Marchy

i could not agree more with this statement.


“For a pure sports car, it must be internal combustion,” he said.

Yeah...I mean who the F would want to put a hybrid system on a sports car! That's for hippies!









Ok...Maybe he was just referring to all electric cars. Those are probably super lame to drive and not very fun.

[ame="https://www.youtube.com/watch?v=q_cRqcbXAs4"]850hp Electric Racing Car: Driving the Drayson B12/69EV -- /CHRIS HARRIS ON CARS - YouTube[/ame]

"Paul Drayson said he has no interest in internal combustion after this thing" - Chris Harris

Ok, off my soap box.

I'm excited to see what Mazda do. It sounds like the are ready to make up for all the downfalls of the RX-8.

[serialk11r]

Originally Posted by strat61caster

This is all contingent on you getting enough compression out of a rotary to make diesel cycle work which has been tough from my limited amount of reading.

It doesn't. You can get 10:1 practically, a bit over 11 with a completely flat rotor, which would cause all the charge to be concentrated around the apex seals which would be bad.

I think there is room for new engine designs, but the Wankel rotary is near its limit. It simply has too poor of a surface area to volume ratio.

[Rampage]

Rumors had been swirling about an RX car to be shown in 2017 and put into production by 2020. Straight from the mouth of Mazda's CEO:

http://www.msn.com/en-us/autos/autos...els/ar-AA7uOdn

The Skyactiv MX-5 will remain the company's only sports car.

[zigzagz94]

F@ck you MAZDA!!!! I wanted to give you my money but I hate you so much right now.


You better at least give me a MX-5 coupe with the mazdaspeed3 engine to fill that niche.


And NO, an AWD Mazda 6 coupe is not a suitable alternative....

[sato]

Sad, sad day...

[wbradley]

emissions= no rotary engine

[strat61caster]

Mazda RX-7: second place only to the NSX for enthusiast cock-tease of the decade.

[BlueDubbinTDI]

Originally Posted by strat61caster

Mazda RX-7: second place only to the NSX for enthusiast cock-tease of the decade.

Why is the NSX a cock tease? Isn't that still being released next year?

[strat61caster]

Originally Posted by BlueDubbinTDI

Why is the NSX a cock tease? Isn't that still being released next year?

Yeah I'm pretty sure people have been saying that 'it's coming out next year!' since before it was discontinued, and just like people around here there were 'rumors' of a second generation with 'moh powah' since before there was a forum dedicated to the NSX.

2002:
http://www.superhonda.com/forum/f31/...re-info-23883/
http://www.vtec.net/forums/one-message?message_id=55834
2003:
http://honda-tech.com/acura-nsx-43/w...ave-v8-554828/
http://honda-tech.com/acura-nsx-43/w...ew-nsx-614696/
2005:
http://www.vtec.net/forums/one-messa...sage_id=431416
2006:
http://www.vtec.net/forums/one-messa...sage_id=484464
http://www.vtec.net/forums/one-messa...sage_id=585155
http://www.vtec.net/forums/one-messa...sage_id=522493
2009:
http://acurazine.com/forums/acura-ns...d-down-740019/

[STJ]

Originally Posted by strat61caster

Mazda RX-7: second place only to the NSX for enthusiast cock-tease of the decade.

No way number one, can only be the Supra!