I am looking for a heavier hammer spring to see if I can chase down the 82ft/lbs that Fx was claiming on the website. Has anyone bothered to try? If so what size, ect...?
Looking for slightly higher hammer spring for FX impact .30
- Thread starter BenSeager
- Start date
Hi Ben. I wasn't able to get the .25 JSB Heavies up to speed in my Impact. I ordered another hammer spring but it was going to take months to arrive in Oz. So I added 1.5 grams to the hammer. That was about a year ago and my gun has shot well and to spec since.
It wasn't difficult. The inside diameter of the hammer is 10mm. I cut about 3mm of 10mm O/D stainless steel rod drilled a hole for the valve rod to pass through the centre then ground it down to the weight I wanted.
It was a good tight fit to push in and I epoxied it as well. It hasn't budged after 1000's of shots.
If you didn't want to make it I'm sure Ernst would make it up for you. He may well have some other advice that may help.
Michael
It wasn't difficult. The inside diameter of the hammer is 10mm. I cut about 3mm of 10mm O/D stainless steel rod drilled a hole for the valve rod to pass through the centre then ground it down to the weight I wanted.
It was a good tight fit to push in and I epoxied it as well. It hasn't budged after 1000's of shots.
If you didn't want to make it I'm sure Ernst would make it up for you. He may well have some other advice that may help.
Michael
Upvote 0
Well that's a good thought too my mind didn't go there and easier for me to do thanks for the heads up! How hi did you get them?
Upvote 0
G
Guest
Guest
Hey Ben, do you know the OD and length of the impact hammer spring? I have a bag full of different size and weight springs I've collected over time. I may have one or two you can try.
Upvote 0
What I found was if I preloaded the hammer spring with the adjustment beside the power wheel I could get more velocity (It is not meant to be preloaded just no slack). So I knew the problem was either the spring or the hammer. My hammer weighed from memory 19.1 grams. I think even 1 gram extra would have got the velocity to standard 850-860fps.
I was struggling to get to 800fps before I added the weight.I tried for many days with many different reg pressures and spring settings. I have now got the new spring but haven't bothered to fit it. It may have also solved the issue.
Spring is 56mm long 10mm diameter 1.4mm wire.
Michael
I was struggling to get to 800fps before I added the weight.I tried for many days with many different reg pressures and spring settings. I have now got the new spring but haven't bothered to fit it. It may have also solved the issue.
Spring is 56mm long 10mm diameter 1.4mm wire.
Michael
Upvote 0
AirSupplyWhat I found was if I preloaded the hammer spring with the adjustment beside the power wheel I could get more velocity (It is not meant to be preloaded just no slack). So I knew the problem was either the spring or the hammer. My hammer weighed from memory 19.1 grams. I think even 1 gram extra would have got the velocity to standard 850-860fps.
I was struggling to get to 800fps before I added the weight.I tried for many days with many different reg pressures and spring settings. I have now got the new spring but haven't bothered to fit it. It may have also solved the issue.
Spring is 56mm long 10mm diameter 1.4mm wire.
Michael
Yes that's the same as the one in mine I thought I wouldn't have time but I found a min and this is the same as what I got..
Upvote 0