[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 483: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4752: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4754: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4755: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4756: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3887)
Tractorsport Flowbench Forum Archive • View topic - Has anyone designed/built a positive pressure ...

Has anyone designed/built a positive pressure ...

Discussion on general flowbench design

Postby gte » Sat Mar 08, 2008 8:52 am

flow bench, instead of a negative pressure flow bench?

I'd like to simulate flow on my intake manifold with pressure, rather then vacuum, as it will see lots of pressure under full throttle.

If possible, could I use a manometer? I'm not 100% understanding how those work in this application, is the water like a needle on an analog gauge?
gte
 
Posts: 21
Joined: Sat Mar 08, 2008 12:15 am

Postby thomasvaught-1 » Sat Mar 08, 2008 2:35 pm

My "Distribution Bench" for Intake manifolds is a Positive Pressure flow bench.

It allows me to blow 600+ cfm into a carb bonnet, a carb, an intake manifold, a set of cylinder heads, and finally an engine block. I use "Gang" Vertical manometers to read the differences in air flow to each cylinder of the block.

I read the air flow passed through the system with a electronic "Hot Wire" air meter on the inlet side of the flow bench. It is for rough estimates. I can take much finer cfm readings using an Orifice Box in front of the flow bench system.

Yes, it has been done. My next system will use a Vortron Supercharger as the pressure source.

Tom V.
thomasvaught-1
 
Posts: 172
Joined: Sun Jan 20, 2008 9:44 pm

Postby maxracesoftware » Sat Mar 08, 2008 2:46 pm

maxracesoftware
 
Posts: 132
Joined: Fri Mar 26, 2004 7:54 pm

Postby gte » Sat Mar 08, 2008 4:26 pm

gte
 
Posts: 21
Joined: Sat Mar 08, 2008 12:15 am

Postby 86rocco1 » Sat Mar 08, 2008 4:28 pm

In the grand scheme of things, practical considerations aside, does it really make any difference whether you blow through a manifold or suck through it? The way I see it, in either case, you're just creating a pressure difference across the manifold which causes air to flow.
86rocco1
 
Posts: 292
Joined: Sun Nov 18, 2007 5:46 pm

Postby gte » Sat Mar 08, 2008 4:31 pm

gte
 
Posts: 21
Joined: Sat Mar 08, 2008 12:15 am

Postby bruce » Sat Mar 08, 2008 4:39 pm

One question I would have is, how much positive pressure you looking for? This would dictate the bench design.
"There is no more formidable adversary than one who perceives he has nothing to lose." - Gen. George S. Patton
bruce
Site Admin
 
Posts: 1638
Joined: Sun May 09, 2004 12:17 pm

Postby maxracesoftware » Sat Mar 08, 2008 4:57 pm

maxracesoftware
 
Posts: 132
Joined: Fri Mar 26, 2004 7:54 pm

Postby gte » Sat Mar 08, 2008 5:05 pm

gte
 
Posts: 21
Joined: Sat Mar 08, 2008 12:15 am

Postby bruce » Sat Mar 08, 2008 5:07 pm

Ah . . . not with the PTS plans :D
"There is no more formidable adversary than one who perceives he has nothing to lose." - Gen. George S. Patton
bruce
Site Admin
 
Posts: 1638
Joined: Sun May 09, 2004 12:17 pm

Postby gte » Sat Mar 08, 2008 5:17 pm

gte
 
Posts: 21
Joined: Sat Mar 08, 2008 12:15 am

Postby 86rocco1 » Sat Mar 08, 2008 5:20 pm

As Larry's pointed out, there are very good practical reasons for a pressurized system, I certainly wouldn't argue that point, I'm just suggesting that there no reason to believe that tests performed one way would necessarily be any more or less valid then ones performed the other way. Either way the air is being forced through in one case by a blower in the other by atmospheric pressure, I fail to see why there would be any difference, at least where a flowbench test is concerned.
86rocco1
 
Posts: 292
Joined: Sun Nov 18, 2007 5:46 pm

Postby gte » Sat Mar 08, 2008 5:23 pm

gte
 
Posts: 21
Joined: Sat Mar 08, 2008 12:15 am

Postby larrycavan » Sat Mar 08, 2008 5:39 pm

larrycavan
Site Admin
 
Posts: 1183
Joined: Fri Apr 01, 2005 4:40 pm

Postby 86rocco1 » Sat Mar 08, 2008 6:01 pm

86rocco1
 
Posts: 292
Joined: Sun Nov 18, 2007 5:46 pm

Next

Return to Flowbench General

Who is online

Users browsing this forum: No registered users and 1 guest