SF Sizes

[Chad Speier]

Can anyone lead me to the SF orifice disc sizes? I searched but cant find it...

THANKS

[Brucepts]

.857, 1.227, 1.770, 2.507, 3.059, and 3.490

[1960FL]

And if i am not mistaken these are not sharp edge?

Bruce?

[Brucepts]

Square edge laser or water jet cut from what I saw, on the plate I had pics of.

[Chad Speier]

OK, I think I'm done! LOL..

Unboxed this thing and put my 2.250 plate on it.

On my PTS I have it set at 356.3cfm

(13.29 * 2.250 * 2.250) * SQRT of test pressure = 356.0

#5 hole.. 359.9
#6 hole.. 360.7


What do you think of that!

[Brucepts]

Think you can sell it to someone else now and go back to using your own bench!!

[jfholm]

well well well! It looks like their benches are the "generous" ones. You are better than you thought Chad!

John

[Chad Speier]

Here is my first test. I didn't have enough gage oil, so I hooked my FP1 to the SF. I used the 2.250 plate and set the dc at 356.00 cfm on the #5 hole.

I took the fixture off, with head attached, the PTS and bolted it to the SF

Here is what I have with my PTS bench.

.200 153.3
.300 222.5
.400 266.5
.500 298.6
.600 318.7
.700 329.3
.800 332.5
.900 334.4
1.00 335.9

Here is what I have with the SF Bench

.200 154.6
.300 225.5
.400 268.6
.500 299.8
.600 317.6
.700 324.7
.800 327.4
.900 329.2
1.00 331.9

This shows me EXACTLY what is important, the DIY bench IS linear!

Another thing of interest, my dc on the PTS is .595, it's .590 on the SF.

[1960FL]

Chad,

On # 5 that 1.0002% and #6 that is a 1.21% error against the PTS DM there must be somthing obvious we are missing.

Just what configuration are you using in your PTS DM?

Are you sure the big blue is level it can't be that close LOL

Rick

[1960FL]

I think those in the Society of heads porters....
Might want to rethink there testing and procedures.

And i think i was told to leave that thread?????

I never did quite get that new math theory when i was in school

Rick