jreynish

iTrader: (2)

dunno about the supercharger being better than turbo.. but sure... I think the altimate setup would be ... sequential port setup as well as a super charger for the low end power and a turbo for the high end power sure you would spenk like 30k on the whole thing but wow what a fast car that would make

RETed

This is where a little information is a dangerous thing...
You need to take some metalurgy classes and find out the characteristics of Ti.&nbsp Ti by itself is a very "abrasive" metal and galls other metals.&nbsp It has also different heat expansion characteristics, so I wanna know how you would solve the clearances problem.&nbsp You would think, if it was a good idea, someone else would've done it by now - there's a reason there is no Ti rotors being made.

Also, someone found out that going extremely light on the rotors does not offer better perfomance.&nbsp Ultra lightweight rotors are already being milled down to the 7 lbs. range.

I would think trying to program a 5-axis CNC to produce a Ti rotor is going to be mega expensive, even though you work at the place.&nbsp Raw Ti material is not cheap.&nbsp Having the bits break going through that much Ti is not cheap.


If you produce this kit for $2,000, then give me a call...


-Ted

geargrabber

i thought of the different expansion of ti.. i could experiment with some plugs of both materials to make the rotors to dimension/side housing clearance when heated...


also titainium is not real hard to machine.. the trick is to keep a chip on it (not let the endmill cut air... always staying in the stock)

i think it would be a cool little project.. but i think your right-- the stock alone is going to be mega-expensive.
but im thinking if it lets me do 20000 rpm, why not?

also, why again doesn't super ultra lightwieght rotors offer better performance?? i thought it would.. maybe its like the lighter/heavier flywheel thingie...

a light flywheel makes for awesome road racing but sucks for getting out of the hole in drag racing... i dunno.

all i can imagine is the sound of a 20000 rpm rotary engine scaring the hell out of everyone. =)

Matt RC-Racing

Think your oilpump chain, the ring gear on the flywheel, input shaft to the gearbox etc is going to like big revs??? Nup!

SnowmanSteiner

The reason lighter rotors don't offer better performance is because there is less rotational mass, so it is much harder to get it moving at lower rpms. And our cars already have limited torque and hp in the low end, so depleting that even more doesn't help it at all.

- Steiner

RETed

The results show that the rotor acts as it's own countweight.&nbsp With lighter and lighter rotors, the bearings take a beating.&nbsp I guess if you get super precise with the balancing, this should minimize the bearing wear, but there is a point where you can't balance everything to "0".&nbsp Or, design a bearing which can take the abuse.&nbsp If you figure how to get the bearing wear problem solved, please post results!


-Ted

geargrabber

i guess i figure if combustion in the chambers would go to work turning the wheels instead of pushing around 9 lb rotors would offer better performance.

maybe we could have a special flywheel setup... a heavy mass around the flywheel for getting off the line, then once the car is rolling pretty good through 1st, it would dis-engage. Or maybe the mass would engage only at lower rpms/gear changes.

i cant visualize the rotor being its own counter-weight,
as far as balancing the rotors i have a design for a machine to do that... i think i could get the rotor to be very balanced using it.

the rotors need to be balanced front/rear (exactly weigh the same) and...
the rotor needs to be balanced as it spins on the e-shaft.

Balancing these two doesn't seem to be all that difficult.

So Ted, if i can do all i said, would it work?

Eric Happy Meal

how exactley can you INVENT something thats ALREADY been done?

bcty

holy crap-lack-ular back from the dead

88IntegraLS

I don't know if it is mentioned in this thread, but this godzilla port experiment failed, in a big way. The engine ate a seal (probably a side seal got hung up on the large port that looked very rough to my eyes) and totally failed at making useful power. The old "port too big for the intake manifold" sickness. There were a few threads about this engine about a year ago.

genII Drifter

This started out as a good discussion topic...

I would have listened to the rest if it sounded credible.

Someone keeps throwing in some letter sequence. Maybe to establish himself as different, or to establish his own identity. Maybe it's like the 1!!1 thing.

I don't know, but not having stupid number/letter sequences in your posts would make whatever you said more believable.