Impact .30 speed down problem

Me and a buddy had the same problem within days of each other. He sent his to UA for repair, i ordered an o-ring kit. UA said his was C3 o-ring, so i changed mine too hoping that was the trick. Bingo. So that’s where I’d start. C3 bumper

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Low FPS check list;

1. Insure C1 is bottom out tight
2. Insure Valve seat is bottom out on valve rod
3. Use only D90 or harder to replace C3 bumper 
4. Insure probe feeder block has a distance of 45mm to edge of butt plate.
5. Check for crack value seat
6. Clear air passages on regulator piston and adjuster screw, piston and screw my need replacing if vary slow recovery time on reg gauge
7. Valve adjuster line 4 for testing 
8. Power wheel on max with no slack on adjuster screw
9. Reg pressure 140-150b for testing 
10. Insure Brass TP on barrels not loose 
11. Insure pellet probe oring and valve rod 2.2x1 oring not blowing when fired
12. Insure valve housing set screw is seating on the flat surface of the valve housing 
    [/LIST=1]
    

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1. 
   
   checked all in the list, finally, C3 is the problem, it is broken like this:
   
   
   
   
   
   the first time, i did not find it's broken, because the two pieces were still together, found out when i checked it carefully, replace it with a new one, the speed is back, but become inconsistent, have to spend more time to tune it, anyway, problem fixed. i own FX impact for 3 months, totally about 500 shots, have broken cocking pin, broken C3 o-ring, Fx impact is really a good design, but FX should think how to make it reliable.

And also for o-ring A3, the .30 barrel, the 2 o-rings are different, who knows the size, i only have one size from the part list from FX,

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10 x 2 and 10 x 1.5

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And also for o-ring A3, the .30 barrel, the 2 o-rings are different, who knows the size, i only have one size from the part list from FX,

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10 x 2 and 10 x 1.5

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And also for o-ring A3, the .30 barrel, the 2 o-rings are different, who knows the size, i only have one size from the part list from FX,

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10 x 2 and 10 x 1.5

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Honestly, i had to make a decision for FX or ED when bought Impact, i know ED is very reliable and easy maintain, but i like the design of impact, i thought Impact might has some problems, never imagine it has some many problems, i changed gauge to Wika, replaced the broken cocking, then replaced the C3 part, so what will be the next broken? when?

i don't think the problems caused by the design, all the problems caused by the material quality, unbelievable!

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Next gonna be the reg. Many have already replaced their reg with Huma reg cause of the creep on pressure overnight. I have a huma reg on the way. $120 shipped. Im an AR155/M4 guy. So I went with the impact since it look much like an AR and has an external reg. I agree the impact has some problem that fx needs to fix before they start shipping to the customers. So we don't have to waste extra money on parts to get it shooting right.There is no excuse on a $2000 gun.

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Reg creep does not make the gun not shoot right. Whether you're hunting or target shooting, do you not verify zero before you start shooting? One or two shots prior to the money shots is all it takes to settle the reg.

I'm not saying don't buy a Huma reg, all I'm saying is that you don't "need" one. The AMP reg in my Crown and Impact both creep, but they don't affect performance or accuracy.....both have single-digit ES and both are sub-moa at 100yds with pellets and slugs. My Impact is even sub-moa at 200yds.

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Hello FX Impact owners, 

FX appreciates your feedback on our products, and we are always looking to improve. This being said, the Impact MKII does have larger, more accurate gauges, a reinforced cocking lever pin and a reinforced hammer pin. 

Regarding the C3 bumper, the PUR90 material o-ring is necessary for full power mobility of the rifle, specifically in the lower power ranges. If your C3 bumper does fail, you can contact us at FX USA ([email protected] , 866-639-0772 option 1) and get a replacement, and if you are under warranty, the part and shipping will be covered. You can also contact us, then send the rifle in for servicing, if you do not feel comfortable completing the repair yourself. We do provide technical support over the phone as well. 

If you are not interested in having full mobility of power ranges, Ernest Rowe has created a Delrin Ring replacement for the C3 bumper. This can be ordered from FX USA. Ernest has been testing this design for years, and has never had one of his bumpers crack, split, or fail in any way. The limitation to this ring, though, as previously stated, is that you will not be able to achieve the lower powers or velocities that you are able to achieve with the rubber PUR90 bumper. The rubber bumper is able to absorb some of the impact from the hammer, whereas the delrin bumper translates the entire force of the impact from the hammer. 

With all of the above said, FX Sweden is looking at the situation and constantly looking for the best solutions for all power ranges and to improve our rifles.

If you have any further questions, feel free to email a question to [email protected], and we will get back to you as soon as possible. 

FX Airguns USA

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