Billet rotors from Mazdatrix
09-30-10 | 05:10 PM
#52
10-02-10 | 02:26 PM
#53
Learned alot | Alot to go
iTrader: (2)
Joined: Apr 2002
Posts: 4,232
Likes: 0
From: Rotaryland, New Hampshire
Ive been waiting for someone to make something like this.
Did they divulge any of the manufacturing process?
The main part of the rotor housing looks like its a cast extrusion, which isnt bad imho and if im right should help keep costs in check.
As for the sealing between the plates and the body of the unit, heat and pressure from combustion will only increase the sealing pressure between the two, a room temperature slip fit between the two i would imagine would be more than sufficient.
Im cringing to think what the gear/bearing race costs, that looks like a rather expensive piece.
Are they really using socket cap screws to whole that whole assembly together in an engine? That would worry me to death
-Jacob
Did they divulge any of the manufacturing process?
The main part of the rotor housing looks like its a cast extrusion, which isnt bad imho and if im right should help keep costs in check.
As for the sealing between the plates and the body of the unit, heat and pressure from combustion will only increase the sealing pressure between the two, a room temperature slip fit between the two i would imagine would be more than sufficient.
Im cringing to think what the gear/bearing race costs, that looks like a rather expensive piece.
Are they really using socket cap screws to whole that whole assembly together in an engine? That would worry me to death
-Jacob
10-14-10 | 05:25 PM
#54
Been here since dirt...
Joined: Jan 2009
Posts: 327
Likes: 0
From: AZ
It's not just the weight, but that makes a difference. The other weak point is the roll pins holding the rotor gear on. Once you hit a certain RPM range, the gear starts to back off the roll pins pressing it into the side iron. That's why racing beat used to modify the rotor gears. They wont do it any more though (at least not for me)... I've asked.
GD
10-14-10 | 06:40 PM
#55
Been here since dirt...
Joined: Jan 2009
Posts: 327
Likes: 0
From: AZ
GD
10-17-10 | 10:30 PM
#56
a month late to the party, but i think this is a good thing. as others have already said, i like the idea of a hybrid rotor better than full aluminum. i can't wait to see what results they yield.
10-18-10 | 03:24 PM
#57
we've learned the hard way that it is. its a completely different duty cycle. just to pick something we have data for, thunderhill, is like doing 14 dyno pulls back to back every 2 minutes, and our shortest run time is 15 minutes, and the longest is 25 hours.
drag racing is 100% wot, but your whole season of import drag racing is less than 15 minutes, and the honda crowd expects to rebuild the engine at least once.
not trying to make a judgement, but just pointing out that drag vs road racing IS different.
drag racing is 100% wot, but your whole season of import drag racing is less than 15 minutes, and the honda crowd expects to rebuild the engine at least once.
not trying to make a judgement, but just pointing out that drag vs road racing IS different.
As far as honda guys expecting build their engines once a year, that is pretty interesting. Our one car here has gone two full seasons now, same build, still making 110psi and running over 860whp. I'm currently building three more engines for other cars to match that cars performance.
~S~
10-19-10 | 01:38 AM
#58
As far as honda guys expecting build their engines once a year, that is pretty interesting. Our one car here has gone two full seasons now, same build, still making 110psi and running over 860whp. I'm currently building three more engines for other cars to match that cars performance.
~S~
~S~
I love reading stuff like this. And to think, all the naysayers always have something negative to say about rotary reliability.
Great job! 
10-22-10 | 11:47 AM
#62
Without a doubt, that was why I was saying not sure on track cars, keep in mind another aspect is you guys running thunder hill aren't running the 38-55psi of boost and the stress that comes with that as well. I agree with you though, I use the same argument on apex seals. You get guys that say "our seals don't wear the housings" yet a full season of drag racing may only be 30-50miles of driving. Of course you don't show much wear at 30-50 miles.
As far as honda guys expecting build their engines once a year, that is pretty interesting. Our one car here has gone two full seasons now, same build, still making 110psi and running over 860whp. I'm currently building three more engines for other cars to match that cars performance.
~S~
As far as honda guys expecting build their engines once a year, that is pretty interesting. Our one car here has gone two full seasons now, same build, still making 110psi and running over 860whp. I'm currently building three more engines for other cars to match that cars performance.
~S~
07-09-11 | 08:13 AM
#65
Save the rotary engine
Joined: Apr 2010
Posts: 26
Likes: 1
From: Miami
Mazda reported years ago that the aluminum rotors had problems with the apex seal grooves widening due to lack of hardening. It's been 2years and so far ALS hasn't given us any long term mileage test results or even a dyno showing the differences in power curve for a NA setup. All we know is that they are making more power with less boost. I wanna know what they are doing in an NA setup. Maybe that info is out there? I haven't seen it. Also there is nothing wrong with some healthy competition. We need more shops doing specialized rotary stuff like this. Mazda can't do it by themselves. It's the only way to get more R&D.
07-09-11 | 05:01 PM
#66
Thread Starter
I'll blow it up real good
iTrader: (1)
Joined: May 2001
Posts: 2,390
Likes: 1
From: San Francisco, CA
A little birdy told me that they will most likely not produce the aluminum rotors but have switched to titanium instead and may be available by the end of the summer....we'll see.
07-10-11 | 09:29 AM
#67
Save the rotary engine
Joined: Apr 2010
Posts: 26
Likes: 1
From: Miami
The Specific Billet Alloy compound is their own patent. Get into EastCoastParts.com to get a set.
I you want to see real fast na and Turbo Rotaries, check GRS-Motorsports.com and will be shocked to see 2-Rotor all-Motor cars doing 9 sec. 1/4mi. Times, and Turbos on the 6sec.
If you can attend the Pan-Americar Nationals this coming weekend(7/15-7/17) at Atco Raceway in New Jersey you can see them in person and ask them how they do it.
Too bad MAZDA don't put much attention to these Events.
I you want to see real fast na and Turbo Rotaries, check GRS-Motorsports.com and will be shocked to see 2-Rotor all-Motor cars doing 9 sec. 1/4mi. Times, and Turbos on the 6sec.
If you can attend the Pan-Americar Nationals this coming weekend(7/15-7/17) at Atco Raceway in New Jersey you can see them in person and ask them how they do it.
Too bad MAZDA don't put much attention to these Events.
07-16-11 | 07:24 PM
#68
That's Insane! I imagine the price will be much higher than they would if they were aluminum.
07-19-11 | 12:30 PM
#69
Yeah, just talked to them and they said they are switching material. I asked what kind and they said cast titanium. This **** is going to be nuts!
11-15-11 | 03:10 PM
#73
Joined: Dec 2001
Posts: 7,093
Likes: 122
From: Twin Cities, MN
11-15-11 | 03:53 PM
#74
me too... but at this point i've all but given up on anything being produced.... at least that would be fully operational in an adequate time frame. Seems like all we have are these lazy attempts at prototypes. The guy from 12rotor.com seemed like one hell of a smart guy. He was answering questions that people havn't even approached yet. Honestly....how hard could it be to re-design and modify/lighten/strengthen already in production item. No one's committed to it or it'd already be done. If piston companies can do it....there's no reason Rotary companies can't do it either. I almost want to call the rotary community...slightly lazy in the R&D department. yea I get it that were a very small enthusiast group....but that shoudl be all the more reason for us to be at the top tier of development.
