Here are the FX impact X hammer and spring specs for those who like to modify. These specs were measured from my .30 Impact X but I'm sure they are the same for all standard power calibers.
The X and pre-X hammers must be the same, because those are the same (within thousandths of an inch) as what I documented on my pre-X rifle. The new CNC mill and I are still getting to know each other, but I have managed to make hammer weights similar to what Ernest showed in aluminum (3g), stainless (8g) and brass (9g). They will have to have some spring pre-load, but that amount is variable. I hope to do some testing on these very soon to get more power at higher reg pressures.
Cheers,
Rusty
You guys are running as low as 3, 8, and 9 gr of hammer?
-Matt
You guys are running as low as 3, 8, and 9 gr of hammer?
-Matt
Where did you get that ??? it's being added to the hammer internally.
You guys are running as low as 3, 8, and 9 gr of hammer?
-Matt
Where did you get that ??? it's being added to the hammer internally.
I corrected my post as I misinterpreted his post thinking he was running those hammer weights not adding that weight to the 20 gr hammer. Makes more sense now!
You guys are running as low as 3, 8, and 9 gr of hammer?
-Matt
Where did you get that ??? it's being added to the hammer internally.
I corrected my post as I misinterpreted his post thinking he was running those hammer weights not adding that weight to the 20 gr hammer. Makes more sense now!
You also have to account for the momentum of that long and realatvely heavy valve rod on the impact.
Are you speaking about the valve stem protruding the valve that the hammer makes contact with? Regardless of its length or how much it sticks out valve lift is going to be the same regardless of its length. If its something else then I am unfamiliar with said rod.
I finally hit the 100 ft/lb mark with JSB 50.15 at 946 fps after porting the valve tube, rear block, barrel transfer port and pellet probe.
The Huma regulator failed a few days ago and Huma offers no help. So much for their customer service. I put the same 14 washer stack from the Huma onto the FX regulator in the same HP configuration and it's working well so far. I need more hammer weight now since I'm not getting much improvement above 160bar.
I finally hit the 100 ft/lb mark with JSB 50.15 at 946 fps after porting the valve tube, rear block, barrel transfer port and pellet probe.
The Huma regulator failed a few days ago and Huma offers no help. So much for their customer service. I put the same 14 washer stack from the Huma onto the FX regulator in the same HP configuration and it's working well so far. I need more hammer weight now since I'm not getting much improvement above 160bar.
Great work, that's a shame your reg failed and Huub hasn't offered any help. I measured my hammer spring on Royale and the specs match this one. I've always wondered if the Boss was capable of reaching 100fpe as well. Great tuning HI
I finally hit the 100 ft/lb mark with JSB 50.15 at 946 fps after porting the valve tube, rear block, barrel transfer port and pellet probe.
The Huma regulator failed a few days ago and Huma offers no help. So much for their customer service. I put the same 14 washer stack from the Huma onto the FX regulator in the same HP configuration and it's working well so far. I need more hammer weight now since I'm not getting much improvement above 160bar.
Sure seems like FX engineers would have considered such hammer weight/spring force points in designing the gun. Maybe improvements can be made but the guns do seem to work very well for most people. One seeming advantage to lighter hammer/heavier spring would be possibly faster lock time which might aid accuracy.