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Subject Going to the flowbench tomorrow >>>>>
     
Posted by Ash's Z on October 02, 2006 at 11:48 PM
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Message I stopped by the local shop that uses a SuperFlow 600 series flowbench - a rather dated unit but it will suffice. The owner let me borrow the users manual so I could get myself up to speed on how everything is done. I generated an excel spreadsheet so I can perform the calculations on the spot and in short time.

The idea here is to get an actual CFM to voltage conversion table so that we can take a closer look into things such as system volumetric efficiency and get an idea of what kinds of volume we are moving through these motors. Anyone with a conzult-style datalogger will be able to easily convert their MAS data into a CFM data and extrapolate additional information from that with some rather simple equations. I plan to expand this spreadsheet with other calculations and make it public for everyone and hope that it will further grow as an open-source document - I know there are a number of Excel-savvy individuals out there that could really make this something of use for the community.

I also plan to take a JWT POP-Charger with me to the flowbench so that we can get some preliminary data on how well they work. I'd love to take other filters with me to show the differences but I dont have anything other than this filter.

The owners of the shop are rather interested in this little project and are allowing me to use the flowbench for next to nothing. They rarely use it anymore as they have shifted their specialty to the aircraft industry and they dont have the kind of flexibility in modifying engine components for aircraft due to FAA regulations - so it works out well that I'm not competing for bench time. :)

Additionally, I will be taking a MASSIVE-SMIC and a stock SMIC up with me as well to get some actual comparison numbers - the CFM ratings that have been floating around are purely measurements made of the bare core itself. Given that there are endtanks and inlet/outlet pipes on these units, it will be nice to see what the *actual* flow volume of these units are when fully assembled. I dont have a set of Sport-SMICs assembled at the moment, but I will make a trip up to the flowbench as soon as I have a set assembled later this week.

I also have a set of stock exhaust manifolds and a set of John Abeler manifolds here that I will be testing in short time as well..... and the flowtests I will be performing will be true measurements of the manifolds themselves, rather than the flawed tests we have seen in every exhaust manifold flowtest I've seen reported to date (you dont flow the air through the head with a manifold connected to it - you flow air through the manifold itself through each port independently, blocking off the other two ports - three data points are collected for each manifold).

If anyone out there has suggestions on any sort of test they would like to see, I'd be happy to spend some time to collect data at the rates I'm getting for use of this machine. I'm not terribly interested in ordering a bunch of components but perhaps working collectively would benefit us all (i.e. if you have a part you want to send for a few days, I'll take it to the flowbench and test it).

Here is the somewhat spartan setup, but it will work:

The MAS has been cleaned to eliminate any erroneous errors.
I am using a TrippLite PR-3A regulated and conditioned power supply.
An old EFI harness clip for the MAS unit.
Velocity stack installed to smooth the intake airflow.

See you guys tomorrow. :)




[ ashspecz.com ]
[ agpowers@bellsouth.net ]

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