Mads

well it took some time but i made this in paint to explain how it is build.

It was build here in Denmark. the seller told me it was two brothers and after on spend some time I the US he saw some airhammers and then went back and they started making them. There is two sizes, this I the big one and the take is 50kgish and it hits super hard. I don't know how old it is but I can't find any info on the company, all bolts are in inches so it has to be old;) I I don't owne the book where can it be found? I have been working a lot lately and there is a lot to read up on this thread already. But I will try to take a foto tomorrow an draw a flow chart on it:) Thanks for all the inputs

The valv makes the hammer idle.. without it the ram just stayed down. But if I close it and air can't get back then it is the same thing as when I run the hammer full power. The new valv works better but I still hope to get the ram to idle higher up and give some more work hight. And some times won't the ram wont go back to idle after a heat and just start clapping the dies... I haven't Ben able to find any info on the hammer or the company I think made it. So I need to invent the valv from scratch:)

I made this it works a little better... just some leather and a shim as a spring. There is not a lot of info online about this kind of problems so hope this will be to some help for others:) 20191013_145106.mp4

Hey after trying the power hammer pages on Facebook with no luck. I hope someone here got an idea. So I got this self-contained hammer its old and a Danish designed. But the idle valv is missing. I have tried making one but it is not doing a great job. So I need an idea for how to design a new one or improving the one I got. I have attached some pictures and film clip of the hammer and hope someone out there got an idea Mads 20190929_112842.mp4