FelixIsGod29X

iTrader: (50)

I see one is shorter in width than the other...could contribute to that?

damic

Ooooh right, dumb dumb :roll:

tegheim

They are both identical
But one isnt mine

tegheim

demongo

iTrader: (2)

http://i815.photobucket.com/albums/z...ps2cf94118.jpg


Wow!

So, now that you've got the thing fully rendered, you should be cranking these out out on the CNC any time now...! ;-)

When do we get to see the fruits of your CNC expertise?

tegheim

It's not ready for the CNC yet. Must do some more experiments in the CAD first
You don't wanna drill at the wrong place

driftxsequence

iTrader: (8)

Have you thought about trying direct injection? Probably not the best experiment for a 4 rotor with this much work done to it, but a 13b with DI would be very interesting!

tegheim

We let Mazda do the testing
They have the money I don't

But it's an idea that me and my friends have talked about for years.
Even to modify a stock 13B-housing, but thoose great ideas often came up when we had some beer

damic

You could do semi di on a test engine? Would be nice any way and you could use normal injectors for that.



I'm currently reading the book: The wankel engine by Norbye (good book)

tegheim

How about this?

tegheim

damic

Can I kiss you?


mmmh njammie but 4 is overkill 3 is acceptable (injector rows that is)

You could make it so you have a 3 injector setup but only running with 2, get it?

CamanoRx2

iTrader: (2)

This is so F***ing SIIIIIIICCCCCCCCCKKKKKKKKK! Go man, Go!

redlineracer

Don't know if anyone posted this yet, but since your making your housings. It's around the end of the video. YouTube

damic

@redlineracer: that video is bullshit
1. compression losses when there is a overlap on the spark plugs is almost nil and then the loss of forward power is also bs.

2. When a object is in a momentum it wants to stay in that momentum and when you ignite an mixture it takes a few ms before it reaches full force and the rotor has already moved away from the backward momentum.

3. the spark plugs don't ignite on the same time but a few ° apart from each other.

@tegheim: why are those spark plugs holes so airy?

tegheim

I like it windy :-)
And I really like big *** sparkplugs ;-)

You'll see :-)

John Huijben

iTrader: (1)

I toyed around with the semi-direct injection in top of the rotor housing too a while ago, but I'm not going to use it because it makes everything more difficult and complicated without actually adding power. It might help a tiny bit with fuel consumption and emmissions, but with a 4-rotor, what's the point really?



I think it can work though, maximum pressure in that area of the engine is around 3 bars, so you probably would like to use 6-8 bar injection pressure, which isn't a problem with modern injectors and a fuel pump like a bosch 044. I think using fully sequential injection is necessary though, and you need to be able to program the exact injection timing. By the way tegheim, are you planning to go turbo? You don't need 2, 3 or 4 injectors for a n/a engine, one single 1000cc injector is plenty!, maybe go with a ID2000 injector if you want to use e85 for some reason. I guess you can plug the unused injector bungs, that way you can always add injectors if you need more fuel at a later stage for some reason or end up using the rotor housing in another engine.

tegheim

No, John, I'm going for N/A, and the picture with all the injectors are just for fun, and for different placements.
I think I will use only one injector in the periferi-port. The one closest to the rotor. But still, it's just CAD-testing yet...

Black and Blue RX

Forget the intake and timing stuff, just add an oxygen injector!
Hé, let's inject with high pressure and you've got yourself a n/a* turbo!
Saves weight too.

Ok, now i stop.

Grtz Dennis.

*= non aspirated.

John Huijben

iTrader: (1)

Nice! I did mine just like that too. https://lh5.googleusercontent.com/-f...bB4/s912/9.JPG

You can place the fuel rail really close to the engine if you place the injectors here, it makes for a nice and compact setup. I'd like to try placing the injectors in front of the intake trumpets F1 style like this:

https://www.cloudshops.com.au/WebRoo...lery/PE042.jpg

But I think it might hurt the engine at idle / lower loads.

tegheim

In the background the CNC is working, and I did one more render... sorry...

tegheim

Feels a bit surreal to fabricate my own housings. Don't know which part that wins, the fun, or the fear

damic

@John: on the 787B (and other cars to) they have multiple injectors like that. 1 on the housing and 1 on the center of the trumpet and it moves along.

Been trying to drawn my own housing the the 12A spec (not easy)

and someday I'm going to let make a 15" version of my rims TWR style :p (original 13")

silverfdturbo6port

iTrader: (26)

Looks great keep up the good work!

Trots*88TII-AE*

iTrader: (11)

I hate to ask, but is casting your own housings economically beneficial vs. new ones??? Or are you looking to create a better design, or just wanted to try doing it yourself because you can? Keep up the great work!