ARH says you can fit their Tesla piston seals by hand using 180 - 220 grit abrasive cloth. Anyone tried this? What brand of abrasive did you use?
- The AGN App is ready! Search "Airgun Nation" in your App store. To compliment this new tech we've assigned the "Threads" Feed & "Dark" Mode. To revert back to a traditional "Forum List" view, and/or "Light" mode click HERE.
Tuning Abrasive cloth
- Thread starter Duckfish
- Start date
this is NOT Norton branded, but it will work, pick your grit, my old machinists buddy used to use the cloth side for a final finish when making something on a lathe 
https://www.ebay.com/itm/1-x-24-Emery-Cloth-Rolls-120-180-220-320-400-Grit-Aluminum-Oxide-Sandpaper/124586598779?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20190606144518%26meid%3D25e5d8cbbade42d499bf786230bccfa8%26pid%3D101072%26rk%3D1%26rkt%3D12%26sd%3D313434306510%26itm%3D124586598779%26pmt%3D0%26noa%3D1%26pg%3D2546172%26algv%3DDefaultOrganic%26brand%3DUnbranded&_trksid=p2546172.c101072.m2109
https://www.ebay.com/itm/1-x-24-Emery-Cloth-Rolls-120-180-220-320-400-Grit-Aluminum-Oxide-Sandpaper/124586598779?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20190606144518%26meid%3D25e5d8cbbade42d499bf786230bccfa8%26pid%3D101072%26rk%3D1%26rkt%3D12%26sd%3D313434306510%26itm%3D124586598779%26pmt%3D0%26noa%3D1%26pg%3D2546172%26algv%3DDefaultOrganic%26brand%3DUnbranded&_trksid=p2546172.c101072.m2109
Upvote 0
Tom Gore said to chuck up on the piston rod in a drill, then use abrasive cloth to reduce the OD of the spinning seal without modifying the original profile of the seal. Flattening or rounding over the tip of the seal is to be avoided. Sounds a little tricky if you are doing it by hand.
Upvote 0
Looks even trickier. I think you need to find a way to get the seal spinning. I still have bench top machine tools so I would make an arbor shaped like the end of the piston to hold the seal in the lathe. In a larger lathe, you could chuck up on the piston body itself. Could you find a seal adapter that you might be able to mount in a drill press? Perhaps the type with a center hole used to convert leather seals to plastic.
Upvote 0
From the ARH web page
hand drill or using a dremel tool if super
careful. (Or just by rotating it in your hand
against the abrasive-best if fitted to the piston.
hand drill or using a dremel tool if super
careful. (Or just by rotating it in your hand
against the abrasive-best if fitted to the piston.
Upvote 0
I wonder if you might get lucky and find a fender washer the right size to fit it over. Fix the washer on a flat head screw with nut and chuck that in a drill. In any case, let us know what you did and how it worked out.
Upvote 0
Yesterday I Put in the new seal from ARH buttoned it all up and it wouldn’t cock. Was quite frustrated with the whole thing so I just left it in the bench.
Thought about it awhile made a few phone calls and decided on a course of action.
I took it apart again and removed the spring. I could then see how it was supposed to latch. I had installed the trigger wrong. Reassembled and every thing was hunky dorey. Except safety wasn’t working right. Took it apart again and noticed a spring and ball that rides the safety switch had fallen out. Tiny little bits. Found them put it back together and it’s shooting factory specs. Taking it to our silhouette shoot tomorrow and running some lead thru it.
Thought about it awhile made a few phone calls and decided on a course of action.
I took it apart again and removed the spring. I could then see how it was supposed to latch. I had installed the trigger wrong. Reassembled and every thing was hunky dorey. Except safety wasn’t working right. Took it apart again and noticed a spring and ball that rides the safety switch had fallen out. Tiny little bits. Found them put it back together and it’s shooting factory specs. Taking it to our silhouette shoot tomorrow and running some lead thru it.
Upvote 0