I have watched tuning guides by Steve, Matt and Ted and they are all excellent, albeit, different. Each has it's own logic and merit but I'm a bit confused.
With Steve, you set your reg. pressure then adjust hammer spring fine tune to hit that max velocity spot before it starts to decline.
Ted says max it out, then set reg. just above the desired speed then work your way back down to the desired speed with the hammer.
I tried both methods. My question is how do you know your "desired velocity" or your proper reg pressure? Here's the deal: with my Impact first I set the reg. to 125 bar, (on the Huma gauge), as suggested by FX; then I found the top velocity with the hammer spring fine adjust. Then I set the valve to the point the velocity began to fall.
Shot 8-shot groups at 50 M and they were very good .....about 0.5-0.6" at 860 fps with King Heavy MKII.
I messed around with the power dial and to my amazement the groups tightened way up, (looks like 0.4"), when I put on setting C which gives me about 825 fps. But the hammer spring is now no longer tuned to the reg, which is still at 125 bar. I could just leave it on C and be happy but guess I'm not that smart.
So, I think I'll try setting to MAX and then start at 100 Bar and slowly go 5 bar up at a time shooting groups at 50 M as per Matt's procedure and see if I can find that harmonic spot where I get the tightest groups....then fine tune the hammer spring setting.
So my question is ...does that make sense or should I stop wasting air and lead and be happy at C? I just want to get rid of variables, shoot on Max and tune the hammer to the best reg setting.
What can I say,,,,the Impact is an amazing but Complicated gun!
Thanks to Matt, Steve and Ted for all of their hard work and great videos.
KP/NC
With Steve, you set your reg. pressure then adjust hammer spring fine tune to hit that max velocity spot before it starts to decline.
Ted says max it out, then set reg. just above the desired speed then work your way back down to the desired speed with the hammer.
I tried both methods. My question is how do you know your "desired velocity" or your proper reg pressure? Here's the deal: with my Impact first I set the reg. to 125 bar, (on the Huma gauge), as suggested by FX; then I found the top velocity with the hammer spring fine adjust. Then I set the valve to the point the velocity began to fall.
Shot 8-shot groups at 50 M and they were very good .....about 0.5-0.6" at 860 fps with King Heavy MKII.
I messed around with the power dial and to my amazement the groups tightened way up, (looks like 0.4"), when I put on setting C which gives me about 825 fps. But the hammer spring is now no longer tuned to the reg, which is still at 125 bar. I could just leave it on C and be happy but guess I'm not that smart.
So, I think I'll try setting to MAX and then start at 100 Bar and slowly go 5 bar up at a time shooting groups at 50 M as per Matt's procedure and see if I can find that harmonic spot where I get the tightest groups....then fine tune the hammer spring setting.
So my question is ...does that make sense or should I stop wasting air and lead and be happy at C? I just want to get rid of variables, shoot on Max and tune the hammer to the best reg setting.
What can I say,,,,the Impact is an amazing but Complicated gun!
Thanks to Matt, Steve and Ted for all of their hard work and great videos.
KP/NC