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EVOL HPS HPS Performance / Tune Info

American Air Arms

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As we enter into the ultra performance realm with infinite tuning available to the shooter the need for baseline tunes (I really dislike the word tune) will be invaluable. Understanding where to start and what are the effects without extraordinary efforts will save time and frustration for all.

I have started with the 300 hps with an 18" barrel, medium plenum extender, and pellet barrel. This spreadsheet is mostly for us to work out the testing methodology. At some point the spreadsheet will be converted into tables on our website. More calibers, barrel lengths, and types will be added as we put them into production. I'm open to suggestions on the information you would like to see presented on the spreadsheet.

A few notes:
Hammer spring was not adjusted during the tests, only the reg pressure and the valve dwell adjustment.
The 56gn ZAN takes a large efficiency hit; completely expected.
Power and shot count with the 44gn JSB are measurably higher than the standard EVOL 30.

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The addition of this type of spread sheet is a great idea. To add to the spreadsheet, to help owner/tuner's with which way they may need to turn the adjusters, a cell on the spreadsheet could be added to indicate where the adjuster should be started out at (number of turns in or out from bottom, etc). I do something like this with Strelok Pro in the Note's section to know where setting are in relation to the projectile speed and/or energy level.Screenshot_20231019-201125~2.webp
 
We can add the hammer position, it will track very closely gun to gun The reg is a bit different, lots of influencing parameters but we will use a 2k base line with the adjuster at the center indicator and gauge for a reference. The dwell is completely analog and will vary some, a count from full in would get you close and a chrony would do the rest.

Good suggestion! Thank you
 
This is a really awesome thing to see, this is something that I PERSONALLY have not seen before with ANY other manufacturer and it shows how A A A feels about being a part of their product even after the sale. With these spreadsheets it will make it a lot easier for the end users , not saying A A A should do this but at this point we can all add to the data (in our own notes anyways) by showing accuracy with the different tunes as well.
 
I hope this is going down the rabbit hole of providing a settings configurator using the data tables.

The user selects platform specs like @American Air Arms has mentioned. Then the "suggested" settings are provided to get you within 95% of your results. The shooter can then dial in by adjusting the hammer or dwell a click or two. I'm guessing at these.

I like @CTAirgunner's thought on allowing experienced users to help with generating the settings. It's certainly not me. :)

No one probably cares but mountain bike manufacturers do this with suspension setup. Plug in the weight and model of the bike and it generates settings.
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Just a quick update on the EVOL HPS BR performance numbers. BR is a variant specifically designed for Bench Rest with an Arca Rail Chassis and a heavy profile barrel. BR will share all the HPS platform features and be fully compatible with any EVOL barrel, Bolt, Chamber, etc
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Looking at that HPS BR data, it would seem that investing in more magazines would be in order! That's 7.5 magazines worth of shots per fill Tom. Fine job Sir!
Just a quick update on the EVOL HPS BR performance numbers. BR is a variant specifically designed for Bench Rest with an Arca Rail Chassis and a heavy profile barrel. BR will share all the HPS platform features and be fully compatible with any EVOL barrel, Bolt, Chamber, etc
.View attachment 6706
 

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