- Joined
- May 31, 2018
- Messages
- 184
Hi Steve,
I could maybe help you out with this however I am based in the UK so shipping could be a pain. That being said if you’re struggling to find someone to do it for you then it may well be worth the trouble.
It looks easy enough to do although I know very little about air guns and even less about modifying them so anything I do will be based purely on your instruction.
If you’re interested drop me a PM. I’d like to know the following before fully committing to anything:
Thanks,
Sam
I could maybe help you out with this however I am based in the UK so shipping could be a pain. That being said if you’re struggling to find someone to do it for you then it may well be worth the trouble.
It looks easy enough to do although I know very little about air guns and even less about modifying them so anything I do will be based purely on your instruction.
If you’re interested drop me a PM. I’d like to know the following before fully committing to anything:
- What material would it be made from? I think a few suggestions have been thrown out there in this thread although your original post stated Derlin. If I were to order some I’d end up having to order far more than I would actually need. Alternatively if you’d be happy with brass/aluminium/nylon then I would probably have something in the scrap box.
- What size of O ring would be going in there?
- Is there a ± tolerance on the diameter? My concern would be that the piston does not look like a machined part and will therefore most likely be out of round. If I machine to the exact size as the tool runs off the end of the piston the cut will more than likely run onto the piston itself. I suppose that this may not be an issue so this is more to make you aware. I suspect that the part is machined slightly oversized to allow for this. The other option as you mentioned earlier is that I could machine the seal head down and then bore the new piece to suit. The downside to this would be that you can’t then revert to original so if it’s an expensive part to replace it’s probably better to accept that the first few mm of the piston may have some machining marks on it.
- The drawing states about 0.4” thick. Is this dimension critical or is it machined to fit? i.e. will I need to test fit to determine this dimension?
Thanks,
Sam