Tuning FX Impact Mk2/M3 - slower first shot - no reg creep - quasi-scientific analysis

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The O-ring design from Accu-Shot doesn’t really make sense. If it sits in a conical seat, it will eventually clamp down on the rod over time. You can use almost any material you like.

The only logical solution is to use an O-ring that sits flat and is secured in place either by a locknut, or with something like FX’s approach using a Delrin insert. Hency why they drilled the surface flat in the new plenum necks.

Why worry about refresh rate? I dont get it. I run a Huma regulator in my Impact, and mine refreshes under one second. I mostly shoot Benchrest with a single-shot tray, so it’s never been an issue.
 
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PcpMachinist said:
re inventing the wheel, the new plenum is fine once installed in the gun strength wise its clamped in, it also takes the same o ring as the DRS Leopard and Panthera
the guys over at accu shot orings had these made roughly 4-6 weeks ago .
Click to expand...

I fixed my DRS Slow shot. Polish the valvepin and install a NBR 90 oring instead of PUR. Solved.

FX - FX DRS Slow Shot - Solved

Hi Folks, I’ve been working for a while on solving the slow first shot issue in the FX DRS. I’ve done various tests and tried different types of O-rings and greases. Finally, after working on it for a long time, I can say that I’ve pretty much solved the problem, as long as the DRS is properly...
www.airgunnation.com www.airgunnation.com
 
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