I installed my new version of the AirgunExporter regulator in my .22 cal Gen I Marauder, and I am extremely pleased with it. I had been in pursuit of the ability to shoot at ~32 FPE with high consistency in the shot cycle in order to have the most consistent “barrel harmonics” possible, and “regulated” seemed the best way to do this. With the guidance of our own Motorhead, I was able to make mods to the air flow path that allowed me to achieve this goal.
I had an earlier post with the original version of the regulator, in which I was able to achieve ~29 FPE with JSB 18.1 grain pellets, and the airflow path was only slightly modified in that configuration. You can read it here:
viewtopic.php?f=29&t=8161I making this post to convey several things: first, that I believe the new regulator to be an outstanding product – one that I highly recommend (if interested, contact Vincent Van Gerven at AirgunExporter:
[email protected] , and do know that I have no business or personal relationship with Vincent but I found him great to deal with). Second, to thank Motorhead for his guidance on my quest (info on the mods made and his lightweight hammer is here:
viewtopic.php?f=29&t=8270), and third, to show the results so that anyone interested in “high power” regulation can know that it can be achieved. Here is a picture of this beautiful regulator, with the attached plenum and gauge hole:
Since I was wanted the power, I did drill out and grind away part of the material in the plenum chamber opposite the gauge hole before I installed the regulator. Here is a picture of the inside of the plenum area, but like an idiot I forgot to take a picture when I was done with my mods (which is probably just as well, since the regulator is a beautifully crafted thing and my mods made it look like trash by comparison). But you should be able to understand the idea of what I did just by seeing the before picture:
Also prior to installing the regulator, I heavily modified the air flow path as follows described in the picture with the shot string. Bottom line: I now have 40 very consistent shots at an average of just over 32 FPE. I tested things at max hammer energy, and I can go as high as 35 FPE with JSB 18.1 pellets, and probably higher with Baracudas, so there is plenty of energy available if one wants to go down this path. Here is the shot string:
I still have work to do to identify the speed that gives me the best accuracy first, and the most shots as a secondary concern, and I plan to enjoy finding those results.
Let me know if you have any questions. I'll be glad to share what I learned, and thanks again to Vincent and Motorhead!
by AlanMcD » Sat Feb 22, 2014 3:49 pm 
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