Mazda 16X (Large Pics)
#26
Administrator
interestingly - the over all size of the engine has only increased marginally and weight has decreased while they have managed to increase the internal volume and stroke substantially.
OD mention the longer flame front. intuitively the longer and narrower combustion chamber would lead to less efficiency. but they have dealt with that by reshaping the bath tub so that the overall effect is actually more "square" than the current motor.
has anyone heard the compression numbers?
OD mention the longer flame front. intuitively the longer and narrower combustion chamber would lead to less efficiency. but they have dealt with that by reshaping the bath tub so that the overall effect is actually more "square" than the current motor.
has anyone heard the compression numbers?
#28
Copied this from a Japanese website
10A
e=15mm
R=105mm
b=60mm
Vh=491cc
13A
e=17.5mm
R=120mm
b=60mm
Vh=655cc
12A
e=15mm
R=105mm
b=70mm
Vh=573cc
13B
e=15mm
R=105mm
b=80mm
Vh=654cc
プロトタイプ
12A'(12A量産前に検討されたエンジン)
e=16.4mm
R=112mm
b=60mm
Vh=573cc
21A
e=18.5mm
R=128mm
b=85mm
Vh=1046cc
22A
e=18.5mm
R=128mm
b=95mm
Vh=1169cc
15A
e=15mm
R=105mm
b=90mm
Vh=737cc
And their guess for 16X is
16X
e=17.5
R=122.5
b=70
Vh=797cc
10A
e=15mm
R=105mm
b=60mm
Vh=491cc
13A
e=17.5mm
R=120mm
b=60mm
Vh=655cc
12A
e=15mm
R=105mm
b=70mm
Vh=573cc
13B
e=15mm
R=105mm
b=80mm
Vh=654cc
プロトタイプ
12A'(12A量産前に検討されたエンジン)
e=16.4mm
R=112mm
b=60mm
Vh=573cc
21A
e=18.5mm
R=128mm
b=85mm
Vh=1046cc
22A
e=18.5mm
R=128mm
b=95mm
Vh=1169cc
15A
e=15mm
R=105mm
b=90mm
Vh=737cc
And their guess for 16X is
16X
e=17.5
R=122.5
b=70
Vh=797cc
#30
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Join Date: Feb 2006
Location: Oakland and Los Angeles, CA
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I'm wondering if they're going to find a way to lower the engine even more in the chassis. With the increased displacement and taller positioning of the eccentric shaft we're looking at a pretty high transmission tunnel.
#32
One Shot One Kill
my guess would be a bigger rotar though thinner, has more moment of inertia that the center has to overcome, so at too high of a rev, it wold put too much stress on the center rod.. thingy.. man i fail at this and i am a freaken ME
#33
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Join Date: Oct 2007
Location: Olathe, KS
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is it just me, (speculation) or will having different metals next to each other present the same problems many of the other earlier rotaries have? i don't know if this thing is going to be all aluminum but i remember hearing about the iron/aluminum ones having issues because the two metals stretch and shrink differently leading to leakage and breakdown. I hope this doesn't make that same mistake this thing looks sweet!
#35
Administrator
is it just me, (speculation) or will having different metals next to each other present the same problems many of the other earlier rotaries have? i don't know if this thing is going to be all aluminum but i remember hearing about the iron/aluminum ones having issues because the two metals stretch and shrink differently leading to leakage and breakdown. I hope this doesn't make that same mistake this thing looks sweet!
#36
Registered
iTrader: (1)
"A mazda planning exec says....it won't be ready until the early teens" <-- yeah that sounds more likely, especially with the complexities of direct injection in a rotary (there is a REALLY good technical discussion about rotaries and direct injection at https://www.rx8club.com/series-i-tech-garage-22/advanced-renesis-tech-99617/)
Actually, I'm probably the only person who's happy about this. I finish med school in 2012, start making some good money by 2014, and then BAMM get a nice new 16X-powered RX-8/9/10/whatever they'll be up to by then. Rotary power for life!
Actually, I'm probably the only person who's happy about this. I finish med school in 2012, start making some good money by 2014, and then BAMM get a nice new 16X-powered RX-8/9/10/whatever they'll be up to by then. Rotary power for life!
#40
I'm just hoping they use piezo injectors. The injectors on there right now look like regular fuel injectors mounted into the housing...
Piezo would be pretty gangsta.
Oh and while we're ripping off stuff, lets take the same aluminium/magnesium alloy that BMW used for their 3.0L N54B30 block and make the side housings out of that!
And how about a nice shiney forged magnesium inlet manifold? That'd be nice.
And lastly Santa....how about a nice big magnesium bell housing for the transmission.
Piezo would be pretty gangsta.
Oh and while we're ripping off stuff, lets take the same aluminium/magnesium alloy that BMW used for their 3.0L N54B30 block and make the side housings out of that!
And how about a nice shiney forged magnesium inlet manifold? That'd be nice.
And lastly Santa....how about a nice big magnesium bell housing for the transmission.
#41
Registered
And, in any case, there is always the possibility of relocating the oil pan, which would allow to lower the engine a little bit.
#45
http://www.moroso.com/articles/artic...mpSystems.html
Are you sure you want PSI? Not CC? As far as PSI, this all depends on the direct injection set up that they choose and hasn't been done yet.
#46
Need, want, need, want, need
If they are planning to release his in 3-5 years time, the very least they could do would be to offer a conversion kit for our RX8s as payback for the mulligan service a lot of us have received. Build it Mazda and we will buy!
If they are planning to release his in 3-5 years time, the very least they could do would be to offer a conversion kit for our RX8s as payback for the mulligan service a lot of us have received. Build it Mazda and we will buy!
#48
Registered Zoom Zoomer
iTrader: (2)
This is a good thing (as it is in our present engines). The dissimilar expansion properties of the metals ensure anti-seizing even if all the oil were lost.
is it just me, (speculation) or will having different metals next to each other present the same problems many of the other earlier rotaries have? i don't know if this thing is going to be all aluminum but i remember hearing about the iron/aluminum ones having issues because the two metals stretch and shrink differently leading to leakage and breakdown. I hope this doesn't make that same mistake this thing looks sweet!