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Discussion Starter · #1 ·
Hello,

Last game my SSG10-A3 was rejected for beiing over the joule limit (limit is 2,3J).
I tested this setup at home and it was under the joule limit by 0,11J after the game the same setup was 0,06J over the limit, how is this possible? (rapax 3+ spring)
Now I installed the rapax 2+ spring and I only get 1,55J even with 12mm of adjuster rings I only get 1,7J is this normal to get this less of an increase with the fps rings?
How much do I need to cut off from the rapax 3+ the get below my field limits?
 

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It sounds like there was maybe a temperature difference, there's a faulty chronograph, or something else weird going on.

One thing it could be is air pressure/elevation, as when I go to my field I have a decrease from 2,543 feet to 880 feet, so I lose a bit of power since I use HPA.
With springs I think you'd gain power at a lower altitude, as the air would be more "springy" due to more "air" in the air.
 

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Unless you or the field has inaccurate chrono’s my experience is that they are pretty consistent with less than .05 J error. (do they have some odd open air or paintball chrono?)

Is your spring BRAND new? I found springs that are brand new and sub 500 shots/pulls could be inconsistent in their energy output. Mind you, not .2 J inconsistent. However my maple leaf, laylax, guarder, evike, shs, and matrix spring experience all has shown me varying degree of spring settling (varying from .1 to as much as .3J)
I don’t know if anyone does this…but for me…when I’m trying to just get RIGHT up to the joule limit. All I do is heat the spring and compress it down by a couple of millimeters. It works out well when I’m trying to drop it by .1J. However I’ve never heard anyone else doing this – however it’s work out very well for me.
 

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Did you test with and without the hop set?
How did your field chrono your gun?
 

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If you do need to bring the energy down a little just wrap some solder around the piston and then a layer of tape to hold it on. This should slow the piston down enough for you.
 

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Discussion Starter · #10 ·
If you do need to bring the energy down a little just wrap some solder around the piston and then a layer of tape to hold it on. This should slow the piston down enough for you.
But with the stalker piston the novritsch cylinder is to small and I have to use heavier spring to overcome the more friction the piston has, if I move to a smaller spring the Joule drops down way more then I think it should
 

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Not to be daft but have you greased the piston glide rings?
My SCW piston is relatively tight with the tolerances of the inner diameter of the cylinder.
I found my FPS more consistent and a little higher when it was properly lubricated.

Also is the piston new along with the spring? Are you using an air break but not before?
 
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