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Altaros Regulators Pr900w / Stormrider

Discussion in 'Technical' started by R3DERP, May 24, 2020.

  1. R3DERP

    R3DERP Newbie

    Messages:
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    Hello there Im new on this forum and really could use some help, I'm quite new to air guns in general too but here goes...
    I own a smk / Artemis / spa pr900w or Diana storm rider (it's actually the smk pr900w but they are all the same rifle in .177) and I recently installed a altaros regulator to try and get some more consistent shots and possibly a slightly higher shot count, now before the regulator was installed it was supposedly set to 110bar by the manufacturer which is supposed to translate to 11.8fpe. (my rifle was firing at 11.8fpe before)

    So I've installed the regulator and refilled the rifle using my stirrup pump up to the usual 190bar and now showing on the rifles pressure gauge is about 105bar so close enough, but here's the problem the count has gone from 40 shots to 9 shots and the power has dropped from the tested 11.8fpe to about 7.2fpe, I wouldn't mind a drop in power if it gave me loads more shots but it's not even ¼ of the shots.

    The pressure on the gauge drops below the set pressure after just 8 or 9 shots which is obviously ridiculous especially now that it's gone from shooting at 790fps to 620fps, before it would take 40 shots to go from 190bar down to 110bar but now it looks like 9 shots! I've recorded 38 shots with the regulator installed so you can see what the velocity is like it's in metres sorry about that but just multiply by 3.3 for a rough idea, it's almost like it's behaving unregulated but power is considerably less.

    Would anyone one say that I just need to adjust the pressure on the regulator or do you think it's faulty? Also any tips on removing it from the air cylinder? I'm assuming mole grips and the long regulator installation tool included with the regulator.

    shot 1:189
    shot 2:187
    shot 3:189
    shot 4:191
    shot 5:191
    shot 6:187
    shot 7:189
    shot 8:187
    shot 9:187
    shot10:185
    shot11:180
    shot12:182
    shot13:175
    shot14:178
    shot15:177
    shot16:174
    shot17:174
    shot18:174
    shot19:172
    shot20:168
    shot21:171
    shot22:169
    shot23:166
    shot24:165
    shot25:166
    shot26:163
    shot27:163
    shot28:162
    shot29:157
    shot30:159
    shot31:159
    shot32:156
    shot33:157
    shot34:156
    shot35:153
    shot36:152
    shot37:171
    shot38:151
     

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