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Rotary powered 242

"Someone who has unlimited funds...." If he did, he'd just pay someone to do it most likely. Money, time, quality - pick any two. He's limited on the first one. That's why he's been at it for several years.
 
This is why 4 rotor..

<iframe width="420" height="315" src="http://www.youtube.com/embed/RJnyJyBxzCE" frameborder="0" allowfullscreen></iframe>
 
diponyou said:
He is building a complete engine on a cnc out of aluminum :wtf:
are you at all aware of how much that would cost just for materials alone??:roll:
more than most have into their entire car here on tbricks....
then we have an entire frame, suspension, that is all being done via cnc, tig, stainless, etc etc
not to mention the programs and machinists needed to make those very intricate parts that have to be within tenths of thousandths of inches.

This wasn't built in some dudes garage. I guarantee there is at least 50-100k(labor and materials) into this car when it is said and done.

Unless this guy is a machinist that has been machining on cnc machines since they came out, and somehow has unlimited access to these machines and materials I guarantee he hasen't "built" half of this car.

And on top, he is on an RX7 forum building a rotary engine, and hasnt even posted in here yet. :roll:
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It is my understanding not his CNC equipment, he works there only and they let him use the machines when slow or off hours. (many shops do this, we used to have a hobby shop club at work that allowed people to use one of the shops once a week at night)

He has been building this for quite some time and I'm guessing he can justify some of the cost as part of his side business expense.

Really shocked I see no plasma or water jet cut parts, guessing the shop he works at does not have a CNC plasma and he does not own one as well.
 
images
 
diponyou said:
He is building a complete engine on a cnc out of aluminum :wtf:
are you at all aware of how much that would cost just for materials alone??:roll:
more than most have into their entire car here on tbricks....
then we have an entire frame, suspension, that is all being done via cnc, tig, stainless, etc etc
not to mention the programs and machinists needed to make those very intricate parts that have to be within tenths of thousandths of inches.

This wasn't built in some dudes garage. I guarantee there is at least 50-100k(labor and materials) into this car when it is said and done.

Unless this guy is a machinist that has been machining on cnc machines since they came out, and somehow has unlimited access to these machines and materials I guarantee he hasen't "built" half of this car.

And on top, he is on an RX7 forum building a rotary engine, and hasnt even posted in here yet. :roll:
Click to expand...

Are you brain damaged? The guy is doing EVERYTHING himself, no farming anything out. He is a talented machinist with a generous employer who lets him use the machines in the evenings and weekends.
 
Thanks! No I'm not an automotive engineer, just a hobby-engineer
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:rofl: and a master troll.


If you read even a little Diponyou, you'd know he uses no aluminum, because it is expensive.
2 lathes and a mill:e-shrug:
His estimate was about $1000 for engine materials, but that was before he decided to make the rotors.

Why a rotary? well, his buddies 2 rotor is 700+ HP, so....
The chassis fab is much more about careful measuring and cutting than any expensive process.
 
Karl Buchka said:
His engine build is off-the-charts bad ass, but I wish he would spend more time on the suspension design. The chassis doesn't do the engine justice.
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On that same token... What am I missing in this picture?

IMAG1664.jpg


Won't that 1.5"x1.5" bar lock that arm in place at certain positions?


I'm not an engineer, it just doesn't look right to me.
 
Joe - the bar is just there to mimic the ride height for mock up purposes. A coil-over will replace that bar....

Yes - it will lock that arm in THAT position.
 
You mean the piece of square tubing bolted between the control arm and upper damper mount? It's just a damper placeholder.

What bothers me is how almost everything is thick plate steel or just grossly overbuilt, rod ends in bending, load paths that are poorly accounted for, camber adjustment that changes SAI, and the practically nonexistent kinematic simulation.
 
M.H. Yount said:
Joe - the bar is just there to mimic the ride height for mock up purposes. A coil-over will replace that bar....

Yes - it will lock that arm in THAT position.
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AHH got ya! Now it makes sense. :oops:

Karl Buchka said:
You mean the piece of square tubing bolted between the control arm and upper damper mount? It's just a damper placeholder.

What bothers me is how almost everything is thick plate steel or just grossly overbuilt, rod ends in bending, load paths that are poorly accounted for, camber adjustment that changes SAI, and the practically nonexistent kinematic simulation.
Click to expand...

Some of that went over my head, but I know you know your ****. So.. yes I agree. :nod::omg:

LOL Do you guys know if this guy has had the same kind of training/schooling as you guys?
 
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