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Tractorsport Flowbench Forum Archive • View topic - Updated Velocity Calculations Helper - Corrected Error

Updated Velocity Calculations Helper - Corrected Error

Place to post/discuss programs & spreadsheets useful for flowbenching. FPExcel, Pipemax etc . . .

Postby larrycavan » Sun Mar 16, 2008 11:35 pm

I couldn't just delete the old spreadsheet so I had to delete the topic and create a new one.

Thanks guys for pointing out an error in the spreadsheet. I believe it's fixed now. Try this one out. Let me know ASAP.
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Postby larrycavan » Mon Mar 17, 2008 10:58 pm

14 downloads and no feedback....c'mon....
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Postby 106-1194218389 » Tue Mar 18, 2008 10:37 am

We are just a thankless bunch aren't we :D btw thanks, great spreadsheet and seems to be right on. You guys make my life so easy, Thanks!
106-1194218389
 

Postby larrycavan » Tue Mar 18, 2008 11:13 am

Thanks jf....appreication isn't what I was looking for though. I wanted to know if the formulas were working properly...that's all. Everybody on the .net is looking for FREE everything anyway....me included!:D
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Postby 106-1194218389 » Tue Mar 18, 2008 2:37 pm

I re-did the calculation they were talking about and it gave the results they wanted so I assume it is correct. It is a great program.
106-1194218389
 

Postby Top38 » Tue Mar 18, 2008 10:21 pm

Larry

She looks good now!

Thanks
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Postby larrycavan » Wed Mar 19, 2008 10:40 am

larrycavan
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Postby Top38 » Wed Mar 19, 2008 10:56 pm

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Postby JMR » Wed Apr 02, 2008 7:48 pm

Larry,

Thanks for contributing the spreadsheet. Got an observation ....

I've been using it to convert pitot tube readings taken at depressions ranging from 18" upwards into their 28" equivalents.

I map my ports in 9 positions (3 rows of 3) and enter the converted pitot pressure figures (Column 'D') into Performance Trends' Port Flow Analyzer. PFA converts the info into a colour graph representation of port speed and also converts the pitot readings into an AVERAGE port speed (fps) for report printouts.

If I take the Column 'C' converted 28" fps figures from your spreadsheet and average them (sum of 9 readings/9), the result is always lower than that provided by the PFA program.

Earlier today I mapped a port at 23", then used your spreadsheet to convert to 28" pitot pressure figures. Average of the 9 readings from Column 'C' in the spreadsheet was 301 fps. Entering the converted pitot pressure readings into PFA delivered a result of 323 fps!

Further example... if I convert a pitot reading of 18" taken at a test depression of 23", spreadsheet converts it to a 28" equivalent of 310 fps & 24.8" pitot pressure. In PFA that 24.8" input translates into 329 fps for a 28" test pressure.

Hope that makes sense ???
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Postby larrycavan » Wed Apr 02, 2008 11:17 pm

Try this...let me know...
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Postby bruce » Wed Apr 02, 2008 11:43 pm

The clear macro does not work for me?
"There is no more formidable adversary than one who perceives he has nothing to lose." - Gen. George S. Patton
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Postby larrycavan » Wed Apr 02, 2008 11:52 pm

larrycavan
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Postby JMR » Thu Apr 03, 2008 4:54 am

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Postby bruce » Thu Apr 03, 2008 7:16 am

I had my macro security set to "high" problem was on my end. The way the error message read it sounded like it was something with the spreadsheet security certificate.

Works now!

Wow that was a day delivery on the throttle bodies, hope you know how they go back together! Make sure you put the seals on the throttle shafts, that would be what I would forget to do. ???
"There is no more formidable adversary than one who perceives he has nothing to lose." - Gen. George S. Patton
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Postby JMR » Thu Apr 03, 2008 4:43 pm

Larry

I've edited this post and removed the link to my 28" Port Velocity Calculator until I get it fixed

Don't want to create more confusion :(
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