H4ir 45 Velocity Drop

Harvolev · 08-16-2021, 07:49 AM

Hey, I've been hunting around and I don't see anyone talking about this so maybe it's something I've done.

I freshly installed the h4ir 45 valve in my m170r frame and ripped a few loaders through it. I noticed that when shooting fast the velocity seems to drop off and then stay consistently lower than the first couple shots or if I shoot slowly (~5 bps versus maybe ~10bps or more).

I didn't have a chrono with me, but plan to go out again this week when I can get a chrono on it and see what the difference is.

Has anyone had this issue or have any insight what might cause this?

ChuckLove · 08-16-2021, 10:39 AM

This happened to me when I didn't give the trigger activation screw enough slack. I believe it essentially causes it to short stroke or the valve isn't fully opening/closing.

Harvolev · 08-23-2021, 08:21 AM

Thanks! I finally had a chance to try that out and it indeed worked perfectly.
Now I'm curious how guys set these up so they're able to walk the trigger! They must have perfectly timed fingers because it does not feel light or fast enough to do that. It is much lighter, so maybe I'll need to practice and figure how they do it!