PCP Air Efficiency Calculator

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PCP Air Efficiency Calculator

Postby Zero4k on Mon Sep 05, 2011 6:05 pm

Found this on my travels: PCP Air Efficiency Calculator

This link might also be useful bar to psi Converter

The Royale is pretty efficient 8-)
FX Royale 400 .22 - FX Verminator MKII .177
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Re: PCP Air Efficiency Calculator

Postby jbcoop on Tue Sep 06, 2011 4:04 am

FX Cutlas: 185cc 200-180 bar 14.3g Accupell (.22) 7 shots 967fps average

avg FPE/cuin per shot 0.92
avg Bar-cc/FPE per shot 17.8
avg FPE per shot 29.7
avg PSI used per shot 41

Does that put my efficiency as Fair to Good?
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Re: PCP Air Efficiency Calculator

Postby Zero4k on Tue Sep 06, 2011 9:34 am

According to your figures and typical PCP examples on the page, yes it does buddy.

Here's mine in the same format:
FX Royale: 400cc 200-180 bar 15.9g FX Airguns 5.52 (.22) 60 shots 570fps average

Avg FPE/cuin per shot 1.49
Avg Bar-cc/FPE per shot 11
Avg FPE per shot 12.1
Avg PSI used per shot 5

Considering this rifle is unregulated, it's a tribute to FX Airguns design and engineering and of course the component quality used in manufacturing - there are some makes of airguns that would struggle to get anywhere near these figures even with a regulator fitted as standard.
FX Royale 400 .22 - FX Verminator MKII .177
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Re: PCP Air Efficiency Calculator

Postby jbcoop on Wed Sep 07, 2011 1:26 am

I have also input my figures for 190-170 Bar and 170-155 Bar. It seems as the cylinder pressure drops the Cutlas' efficiency improves. Both of these are now in the Good range.

I would be interested in the FX Royales numbers when tested at 30FPE. In other words, how does the efficiency change between 12 FPE and 30 FPE.

FX Cutlas: 185cc 190-170 bar 14.3g Accupell (.22) 12 shots 958fps average
avg FPE/cuin per shot 1.03
avg Bar-cc/FPE per shot 15.9
avg FPE per shot 29.1
avg PSI used per shot 36

FX Cutlas: 185cc 170-155 bar 14.3g Accupell (.22) 7 shots 918fps average
avg FPE/cuin per shot 1.11
avg Bar-cc/FPE per shot 14.8
avg FPE per shot 26.8
avg PSI used per shot 31
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