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Old 03-15-11, 10:54 PM
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Originally Posted by Bigyellowcat
That is the displacement of materials in the engine.. aluminum, tool steel, titanium, magnesium, unobtanium, ect. ... not engine stroke.

I bet it was a PITA to get pass the smurfs for Unobtainium..

Old 03-15-11, 11:08 PM
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Originally Posted by Bigyellowcat
guestimate...?? you dont know us very well.... 839.95 lbs... maybe take an ounce of sanding material away .. to polish it...
So does this qualify as a big block rotary AKA "Big Keg" engine ??

Bigyellowcat, The resleved housings really is something to consider. I just tonight made a p-port display out of a trashed housing that was just sitting around. Honestly if you were offering this I would have just sent it to you. And now with the 13B and renesis being phased out in the not so distant future in favor of the 16X there is going to be even more demand .
Old 03-16-11, 01:48 AM
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Wow, that's just sick. Are the 3 'rows' geared together or will they each run a separate prop?
Old 03-16-11, 05:57 AM
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Originally Posted by Bigyellowcat
but if there was enough demand for it we could work on a faster cheeper way to do it.?

but for stock i would say its not going to be cost effective unless we made hundreds or thousands of them..
Get ready...!!!
Attached Thumbnails 12 rotor engine-housing.jpg  
Old 03-16-11, 09:04 AM
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^^ My FSM! Where was that picture taken?
Old 03-16-11, 10:54 AM
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now wonder its dwindling down over here...Greece has all the engines
Old 03-16-11, 11:29 AM
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That engine is awesomeness in its purest form. Excuse me while I change my pants.
Old 03-16-11, 11:37 AM
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Originally Posted by MadScience_7
Wow, that's just sick. Are the 3 'rows' geared together or will they each run a separate prop?
they are geared together. the center engine is the output..

Originally Posted by Ferrariferg
That engine is awesomeness in its purest form.
thanks...
Old 03-16-11, 12:11 PM
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Originally Posted by Aaron Cake
Well hell, screw the 4 rotors, 5 rotors and 12 rotors, becuase this is what is important! You've just done something that for some reason, no one else has done. The demand for re-sleeving housings is going to be huge. How huge? Try finding an OEM 12A or early 13B housing. If the volume demands, and it will, and you can get the price down to say $250 a housing, then you have a massive winner here. These resleeved housings are likely the most important development in the rotary world since the Renesis.
Lets not get too excited yet guys. From the sound of it, it doesn't appear that this engine has even fired up yet and how long it will last and run, let alone some inserts for housings. Sorry to be Donny downer but lets be realistic and get some numbers and time on this stuff before going crazy.
Old 03-16-11, 12:43 PM
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^jealousy^ ;D
Old 03-16-11, 03:01 PM
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Originally Posted by Aaron Cake
^^ My FSM! Where was that picture taken?
Actually that picture was taken from http://www.rxmotors.co.uk/ They've been in the business for a long time and also do good business. Btw their rx7 with a rx8 totally stock transmission broke into the 9's, just a nice fact.
Old 03-16-11, 07:37 PM
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Originally Posted by lastphaseofthis
^jealousy^ ;D
Not at all. I admire his work and craftsmanship to the highest levels, but looks don't mean anything if it doesn't run or function for any lenght of time. It's pretty hard to beat the factory chrome plating on the housings, so if you cannot duplicate this with a sleeve, then a sleeve with other coatings I don't think will work very well as we have found out with the cerment coatings, etc.
Old 03-16-11, 08:55 PM
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Give the dude some time before you start hating bro.
Old 03-17-11, 01:12 AM
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Originally Posted by Jibaro 12A
Give the dude some time before you start hating bro.


True! Ya neva know! The sleeve may work perfect with ceramic seals. Hell the older factory chrome was pretty hard and you could easily get 200k out of those housings with metal apex seals.
Old 03-17-11, 01:21 AM
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Originally Posted by Bigyellowcat


thanks...

I really admire your bravery for posting as much info as you already have. I know we aren't your target market but I'm sure you have a ton of info that (understandably so) needs to stay a secret. Take as much time as you need for any future updates. We really appreciate what your passing on to us! I know for a fact that if I was a high roller, I would most definitely have your engine in my boat as I'm a rotary NUT.
Old 03-17-11, 01:31 AM
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Originally Posted by ultimatejay
Lets not get too excited yet guys. From the sound of it, it doesn't appear that this engine has even fired up yet and how long it will last and run, let alone some inserts for housings. Sorry to be Donny downer but lets be realistic and get some numbers and time on this stuff before going crazy.
Maybe it is wise to keep your mouth shout or gingers off the keyboard and open your mind alittle. As for not getting too excited that's how I feel about your high 11's n/a drag car. Light up alittle and go with the flow.
Old 03-17-11, 01:51 AM
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Old 03-17-11, 08:43 AM
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Originally Posted by ultimatejay
Not at all. I admire his work and craftsmanship to the highest levels, but looks don't mean anything if it doesn't run or function for any lenght of time. It's pretty hard to beat the factory chrome plating on the housings, so if you cannot duplicate this with a sleeve, then a sleeve with other coatings I don't think will work very well as we have found out with the cerment coatings, etc.
if you tried to test different coatings you can only test one at a time. if you try to test another one it would not be a good test because you would not know if it was ran as hard, as high of boost, as many starts and stops, ect..

i have two different materials i have made sleeves out of... i have sent some of each out to have different treatments or coatings put on them.. then in the engine i am going to run one of each material raw with nothing on it, and one of each material with each coating on it and one factory sleeve we have machined the housing away from to have a control piece. now my test will have the exact same abuse to each material and coating.. and i will run it and take it apart and inspect it and put back together and do again till i see wear in all of them and know which one is the best..

there are a couple that im pretty sure are going to do better then the factory one but they are very expensive and were not available several years ago, which is why i dont think mazda used them..and i am trying to build the best engine i can so cost is not as much of a factor as longevity. and if the factory coating is the best then that is what i will do..

and cermet is not one of the coatings im doing.. i may end up testing that also but i doubt it.

here is a video of some of the testing i have been doing... no need to tell me how this is not a good test.. i know every reason its not.. but it is still a good test..

every week it has ran is around 11,000 miles at 70 miles per hour at 3-4 k rpm. i slowed it down for the camera to try to pick it up but it has been running at 6,000 rpm... kinda scarry to stand there..

http://www.youtube.com/watch?v=VUMTba3Aw3c

Last edited by Bigyellowcat; 03-17-11 at 08:53 AM.
Old 03-17-11, 09:16 AM
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sooo cool.
how are u spinning that thing some type of drill press?
Old 03-17-11, 09:52 AM
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Wow very cool indeed.
Old 03-17-11, 12:02 PM
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Originally Posted by Bigyellowcat
if you tried to test different coatings you can only test one at a time. if you try to test another one it would not be a good test because you would not know if it was ran as hard, as high of boost, as many starts and stops, ect..

i have two different materials i have made sleeves out of... i have sent some of each out to have different treatments or coatings put on them.. then in the engine i am going to run one of each material raw with nothing on it, and one of each material with each coating on it and one factory sleeve we have machined the housing away from to have a control piece. now my test will have the exact same abuse to each material and coating.. and i will run it and take it apart and inspect it and put back together and do again till i see wear in all of them and know which one is the best..

there are a couple that im pretty sure are going to do better then the factory one but they are very expensive and were not available several years ago, which is why i dont think mazda used them..and i am trying to build the best engine i can so cost is not as much of a factor as longevity. and if the factory coating is the best then that is what i will do..

and cermet is not one of the coatings im doing.. i may end up testing that also but i doubt it.

here is a video of some of the testing i have been doing... no need to tell me how this is not a good test.. i know every reason its not.. but it is still a good test..

every week it has ran is around 11,000 miles at 70 miles per hour at 3-4 k rpm. i slowed it down for the camera to try to pick it up but it has been running at 6,000 rpm... kinda scarry to stand there..

http://www.youtube.com/watch?v=VUMTba3Aw3c
First off, it seems people have been reading my responses negatively like I'm bashing your work or project. So I want to make clear for the people that can't read and comprehend my intentions. These are the kind of people that start wars- that make a mountain out of a molehole. Like I said three times before, your engine is amazing and the workmanship and craftsmansip and design are off the charts.

My comment before was regarding the sleeves that people were already placing orders for. lol It takes alot of R&D before you can just put something like that out on the market and sell. They have to be reliable and cost effective and last just as long as the factory housings or longer or else they will not do well in the marketplace. Like you said, just the cost in all the machining that needs to be done is very very costly, let alone the coatings, etc. All I'm trying to do is keep it real. Yes, this is very exciting and I'm excited too. For example: Look how everyone was excited about the billet aluminum rotors that came out by E&J. How many people here actually bought them? I don't know of any. There's one thing I have learned about rotary owners over the years is that they are CHEAP! LOL

Anyways, I wish you the best of luck and if I had the money I would be doing the same thing. People like you and E&J are moving the rotary engine to the next level and we commend you guys.
Old 03-17-11, 03:34 PM
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I remember reading somewhere either on this thread or the other that you're not planning on injecting oil or premixing. It doesn't look like you are in the video. Am I correct in saying that you're not going to be lubricating it? I know you designed your parts differently than Mazda but...?
Old 03-17-11, 05:00 PM
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No we did not have any oil on it, stopped it and put grease on the stationary gear and main bearing a few times, but nothing on the sleeve. I hope with one of the coatings I have that we will not need oil in the gas so it will be easier to pass emissions and make more power. I will be running a premix in the engine and tapering out the oil over time to see which coating will handle it..
Old 03-17-11, 05:58 PM
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So you spin that setup at 3-4k for the equiviant of 11,000 miles per week with out any coolant? Does it not create friction?

Very cool stuff your working on!
Old 03-17-11, 06:09 PM
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Originally Posted by R.P.M.
So you spin that setup at 3-4k for the equiviant of 11,000 miles per week with out any coolant? Does it not create friction?

Very cool stuff your working on!
Yes gets hot as hell, it's mounted to big aluminum blocks (10x10x6) each that have lines in them with a fan blowing on them.. The rotor has burnt me a couple times taking it out to put grease on the stationary gear


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