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> Volocity stack design considerations??, for my mickey mouse ITB's
Mueller
post Apr 4 2006, 03:19 PM
Post #21


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Slightly warmed up /4 motor applications...I'm thinking just about any design better than none at all....I'd like to metal spin these myself, however if I can get a good price on 8 from a fellow non-club member, I'll go that route (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif)






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Twystd1
post Apr 5 2006, 12:43 AM
Post #22


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YUP... What everybody else said about the rounded edge.

He Paul.. I know you have made these before. Can ya make a clone of the TWM style rounded edge stacks??

Word is from the head porters I know, that is the correct shape (or close to it)

One guy flows heads with the complete intake system attatched.
He say's the rounded edge doesn't really give them much more CFM.

But it does give them more uniformity of flow. Especially on carbs. Cause carbs need the velocity and proper flow charachteristics to get the fuel sucked out of the transition ports and the center anular ring effectively. They say it makes a great differance on transition from idle to mid or full throttle. (on carbs)

Other than that.. I don't know any real data...

By da way... take a look at those factory RACE ENGINES that were at the Pelican auction a couple of weeks back... (pics at PP board)

ALL velocity stacks were rounded over.

Paul.. You and I looked at em at the swap meet...

Clayton
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Mueller   Volocity stack design considerations??   Apr 4 2006, 03:19 PM
bd1308   carbs have had velocity stacks for years....   Apr 4 2006, 03:42 PM
spunone   Just send me the measurements and if we ever meet ...   Apr 4 2006, 03:52 PM
spunone   You can roll outer edge back onto itself I have m...   Apr 4 2006, 04:04 PM
SirAndy     Apr 4 2006, 04:14 PM
jsteele22   Hey Mike, Don't know if you've run ac...   Apr 4 2006, 04:27 PM
ClayPerrine   Velocity of Sound Website - Maker of Velocity Stac...   Apr 4 2006, 04:38 PM
ClayPerrine   I still want to know why you are reinventing the w...   Apr 4 2006, 04:40 PM
ClayPerrine   If you are really pimpin'. you would use the...   Apr 4 2006, 04:41 PM
Mueller     Apr 4 2006, 05:14 PM
Thorshammer   The outer lip needs to be rounded. The edge is ver...   Apr 4 2006, 09:05 PM
retrotech   I tested air flow with vacume cleaner suction & sm...   Apr 4 2006, 09:48 PM
Twystd1   YUP... What everybody else said about the rounded ...   Apr 5 2006, 12:43 AM
Porcharu   Get that mill going Mike. Make an insert and pres...   Apr 5 2006, 02:09 AM
jsteele22   I don't know anything about the design of velo...   Apr 5 2006, 11:28 AM
maf914   Lot's of good ideas, but how come no one has m...   Apr 5 2006, 01:31 PM
Mueller     Apr 5 2006, 01:38 PM
Aaron Cox   yummy jenevey's http://www.914w...   Apr 5 2006, 01:43 PM
Aaron Cox   OMG! they even make "injected air horns"!...   Apr 5 2006, 01:44 PM
Mueller   aaron, here is video showing how many of the spu...   Apr 5 2006, 01:50 PM
spunone   Ok one more for ya fellas .On a few nitro drag bik...   Apr 5 2006, 01:50 PM
jsteele22   I don't know why two stacks would give more ai...   Apr 5 2006, 02:43 PM
john rogers   Something to think about, are you going to run air...   Apr 5 2006, 02:49 PM
Aaron Cox   what if you had 4 different size stacks???? ...   Apr 5 2006, 03:27 PM
jsteele22   ...   Apr 5 2006, 03:28 PM
Aaron Cox     Apr 5 2006, 03:29 PM
jsteele22   ...   Apr 5 2006, 03:42 PM
bd1308   guys, we need to think outside of the box. I am g...   Apr 5 2006, 04:02 PM
TimT     Apr 5 2006, 04:15 PM
Aaron Cox     Apr 5 2006, 04:18 PM
TimT   Let Steve Timmins explain http://instant-g.com/Pr...   Apr 5 2006, 04:33 PM
Rick_Eberle   Here's what Suzuki use on their current GSX-R...   Apr 5 2006, 06:11 PM
Rick_Eberle   Showing the slots...   Apr 5 2006, 06:12 PM
maf914   ...   Apr 6 2006, 09:21 AM
Rick_Eberle     Apr 6 2006, 06:42 PM
J P Stein     Apr 6 2006, 06:51 PM
Porcharu     Apr 6 2006, 10:42 PM
fin   I believe the formula for a proper roll on the mou...   Apr 7 2006, 08:16 AM
dstar  
  Apr 7 2006, 04:31 PM
spunone   Sample stack headed out today UPS have fun   Apr 7 2006, 05:27 PM
Thorshammer   Since I worked for Suzuki for 5 years, I thought I...   Apr 7 2006, 11:06 PM
Rick_Eberle  

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