New Rx-8 And Posible Rx-7 With Larger 16c Engine
10-02-07, 03:40 PM
#26
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thare you go guys, 1.6l , Direct injected, all aluminun engine:
http://rotarynews.com/node/view/949
for more detail:
http://www.mazda.com/publicity/relea...10/071002.html
http://rotarynews.com/node/view/949
for more detail:
http://www.mazda.com/publicity/relea...10/071002.html
10-02-07, 09:46 PM
#29
I'm sorry, but what the HELL was the design team for the Taiki thinking? The front end is okay, but the fact that the undercarriage moves up toward the back, and that HIDEOUS rear end... just ew.
That said, the 16a sounds enticing. If they get away from these too-far-out-there concepts, and make something that looks like I car, and not a horribly deformed one, I would buy a next-generation Rotary-powered car. Otherwise, I just hope there's a good way to drop a 16A-TT in an FD chassis.
That said, the 16a sounds enticing. If they get away from these too-far-out-there concepts, and make something that looks like I car, and not a horribly deformed one, I would buy a next-generation Rotary-powered car. Otherwise, I just hope there's a good way to drop a 16A-TT in an FD chassis.
10-07-07, 02:53 PM
#32
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10-07-07, 09:22 PM
#33
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alright, heres a shitty MS paintchop I did in about 5 minutes between the new taiki concept and the kabura's back end. I have ZERO photoshop skills and I did it in paint, so enjoy 
This is to show those that say this concept is butt ugly and useless that yes, it can be used as a design study.
This is to show those that say this concept is butt ugly and useless that yes, it can be used as a design study.
Last edited by a.y.b.; 10-07-07 at 09:38 PM.
10-08-07, 12:16 AM
#35
Almost certainly iron rotors. The cooling necessary with an aluminum rotor would be ridiculous. You need to keep the whole thing below 350F when the combustion chamber gets up to 4000F. That's easy with the housing: just bathe it with coolant and problem solved. Moving coolant conducts heat far better than air or metal, so your housing temp is essentially the same as your coolant temp. With the rotor what are you going to do? Fill the entire thing with oil? You'd need to or the apexes would be much hotter than the center. Or you could just cool the center and use an iron rotor, which can withstand several hundred degrees without softening.
That brings up another issue. I'll bet the new Renesis' aluminum housings will require extra cooling which will mean more put into the coolant and probably lower thermal efficiency. I'm guessing the aluminum housings were a compromise to keep the weight of the larger engine down to a reasonable amount at the cost of a slightly larger radiator and slightly worse fuel economy. Plus the direct injection improves fuel economy so maybe they think they can afford this. Or are the 13B iron housing parts already cooled with direct coolant contact? (vs. part of them being some distance away from the coolant) In that case there's no disadvantage I can see.
That brings up another issue. I'll bet the new Renesis' aluminum housings will require extra cooling which will mean more put into the coolant and probably lower thermal efficiency. I'm guessing the aluminum housings were a compromise to keep the weight of the larger engine down to a reasonable amount at the cost of a slightly larger radiator and slightly worse fuel economy. Plus the direct injection improves fuel economy so maybe they think they can afford this. Or are the 13B iron housing parts already cooled with direct coolant contact? (vs. part of them being some distance away from the coolant) In that case there's no disadvantage I can see.
10-08-07, 10:23 PM
#37
Almost certainly iron rotors. The cooling necessary with an aluminum rotor would be ridiculous. You need to keep the whole thing below 350F when the combustion chamber gets up to 4000F. That's easy with the housing: just bathe it with coolant and problem solved. Moving coolant conducts heat far better than air or metal, so your housing temp is essentially the same as your coolant temp. With the rotor what are you going to do? Fill the entire thing with oil? You'd need to or the apexes would be much hotter than the center. Or you could just cool the center and use an iron rotor, which can withstand several hundred degrees without softening.
That brings up another issue. I'll bet the new Renesis' aluminum housings will require extra cooling which will mean more put into the coolant and probably lower thermal efficiency. I'm guessing the aluminum housings were a compromise to keep the weight of the larger engine down to a reasonable amount at the cost of a slightly larger radiator and slightly worse fuel economy. Plus the direct injection improves fuel economy so maybe they think they can afford this. Or are the 13B iron housing parts already cooled with direct coolant contact? (vs. part of them being some distance away from the coolant) In that case there's no disadvantage I can see.
That brings up another issue. I'll bet the new Renesis' aluminum housings will require extra cooling which will mean more put into the coolant and probably lower thermal efficiency. I'm guessing the aluminum housings were a compromise to keep the weight of the larger engine down to a reasonable amount at the cost of a slightly larger radiator and slightly worse fuel economy. Plus the direct injection improves fuel economy so maybe they think they can afford this. Or are the 13B iron housing parts already cooled with direct coolant contact? (vs. part of them being some distance away from the coolant) In that case there's no disadvantage I can see.
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