Finger Vanes

Fingers

Fingers

Village Idiot
Vendor/Sponsor
Apr 1, 2008
1,717
96
48
White Oak, PA
If the flow didn't have to go around that pivot pin it could be reduced some more. Even so, you need a shape that will work over about 30* of attack angles. A sharp point for instance, would actually create more resistance. The stock profile across the back of the vanes is about optimal and I didn't change it much.
 
Fingers

Fingers

Village Idiot
Vendor/Sponsor
Apr 1, 2008
1,717
96
48
White Oak, PA
Brayden said:
Patent from a Honeywell (Garrett) engineer..

Jon.. I have some vanes from another VNT that you should see. Pretty interesting :D ;)
Click to expand...

If it takes as long for you to show me them as it has for you to get a Cheetah on my doorstep, I'll pass. :D
 
Brayden

Brayden

New member
Jan 16, 2008
1,170
0
0
www.fleeceperformance.com
:D It's hard to send a core out when everyone of them is accounted for.. I've been buying them up though so I should have a spare sometime soon...

Check out this Garrett vane design....
 

Attachments

  • Garrett_Performance_Vanes.jpg
    Garrett_Performance_Vanes.jpg
    77 KB · Views: 228
Fingers

Fingers

Village Idiot
Vendor/Sponsor
Apr 1, 2008
1,717
96
48
White Oak, PA
That is the next logical step. But it will not show up in an emmisions vehicle. Not enough back pressure.
 
Fingers

Fingers

Village Idiot
Vendor/Sponsor
Apr 1, 2008
1,717
96
48
White Oak, PA
I should elaborate. The vane he shows is twisted, cupped and has a raked leading edge. I do not agree with the twist, but I could be wrong. It adds an axial component to the flow I don't see adding anything, but consumes energy to generate.

I have never see that design before, but my vane profile is scary similar.
 
Fingers

Fingers

Village Idiot
Vendor/Sponsor
Apr 1, 2008
1,717
96
48
White Oak, PA
Yup, looking down the long axis, they have a right hand twist. Top and bottom concave. Makes perfect sense.
 
Brayden

Brayden

New member
Jan 16, 2008
1,170
0
0
www.fleeceperformance.com
Makes perfect sense as in you like it or see why they're doing what they're doing? It's an effort towards making the throat area largest at all angles right?




Kind of looks like a snake tongue.... That looks like a job for a lathe with live tooling and dual spindles.
 
05_LLY

05_LLY

Out-A-Time
Aug 7, 2006
1,756
1
36
42
Norvelt, PA
Id be interested in testing a set for ya John, when i get out of here and on my feet again that is!!! I can get my hands on a spare turbo to install them in and them just do the swap!!!
 
Fingers

Fingers

Village Idiot
Vendor/Sponsor
Apr 1, 2008
1,717
96
48
White Oak, PA
Brayden said:
Makes perfect sense as in you like it or see why they're doing what they're doing? It's an effort towards making the throat area largest at all angles right?




Kind of looks like a snake tongue.... That looks like a job for a lathe with live tooling and dual spindles.
Click to expand...

It is an effort to have the least resistance for the area. A long slit of a given area has more resistance than a round hole of the same area. The whole idea of the VVT is to vary the area of the throat and thus adjust the gas velocity.

Ball end mill on a conventional CNC will do it.
 
ZR1160

ZR1160

TT Dmax Junkie
Jan 12, 2007
221
0
0
Eastern Canada
Brayden said:
:D It's hard to send a core out when everyone of them is accounted for.. I've been buying them up though so I should have a spare sometime soon...

Check out this Garrett vane design....
Click to expand...
Brayden, I don't need my core back right away if you want to send it......It would be for a 68mm
 
You must log in or register to reply here.
Top Bottom