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Air Gun Home Forum Index » Airgun Smithing » Co2 Cap Removal    View previous topic :: View next topic  Co2 Cap Removal   Posted: Sat Oct 22, 2011 11:39 am Alstone Moderator & Site Supporter Joined: 01 Mar 2007 Posts: 4139 Location: Linconshire, ENGLAND When your getting on a bit in years you look for ways of making things easier, I have difficulty tightening up the Co2 cap and then backing it off a quarter turn on my QB78. So here is my solution to the problem, I riveted a couple of pins in the cap end which I can use to tighten the cap, this makes the job a lot easier to do plus it looks better I think? Al _________________   Posted: Sat Oct 22, 2011 12:15 pm SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario Nice Al I sometimes have trouble backing mine off a quarter turn as well. It seems to release just enough gas to make it impossible to turn yet when I degas and turn the cap I sometimes hear the telltale pffffft of more gas trapped inside the caplet _________________ Sean   Posted: Thu Nov 03, 2011 2:30 pm oddtodd Silver Status Member Joined: 30 Dec 2008 Posts: 2029 Location: Richmond, IN USA I'm glad that there is a quarter sized slot in the end of my crosman. I have to use it sometimes. I can't figure out how it gets so tight. I've played guitar for over 20 years so it can't be that I don't have enough finger strength. Any ideas? Could it be that my 2240 is over 20 years old? lol It was my first real airgun. I had a 1894 daisy bb gun before that but I don't count it. lol _________________ Airguns: Two starlings talking "Larry, did you hear that? Larry?? LARRY!!!!"   Posted: Sat Jan 28, 2012 2:34 pm Mark5043 Silver Status Member Joined: 12 Apr 2009 Posts: 1379 That's a fantastic way to solve the issue Al....great Idea! Looks professional....nice and clean...   Posted: Sun Jan 29, 2012 2:31 am Slavia Moderator Joined: 31 Mar 2008 Posts: 4382 Location: Waseca, Minnesota, USA Good idea. I'm actually more drawn to the brass plate that hides the end grain - that's classy. _________________ ¡Listo! ¡Apunte! ¡Fuego!   Posted: Sun Jan 29, 2012 2:42 pm AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6930 Location: "Out There" That is pretty neat. How stressed are those rivets? As in- what are the chances of them working loose over time? And no, no trying to be difficult- am really just wondering how well anchored they are, or if welding the pins in place might work better? _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront   Posted: Sun Jan 29, 2012 5:15 pm Alstone Moderator & Site Supporter Joined: 01 Mar 2007 Posts: 4139 Location: Linconshire, ENGLAND The pins are 1/4" dia and stepped to 3/16" where they go into the cap, the inside of the cap is counter bored also I use loc-tite on the joint. so I don't expect it to move, the thing is to get a good fit in the holes, if they are sloppy to start with they will come loose. A spot of weld would make it permanent but your welding a bit close to the cap threads, but you could put a ring of shim steel in the cap to protect them while you weld. Al _________________   Posted: Sun Jan 29, 2012 5:20 pm Alstone Moderator & Site Supporter Joined: 01 Mar 2007 Posts: 4139 Location: Linconshire, ENGLAND Slavia wrote: Good idea. I'm actually more drawn to the brass plate that hides the end grain - that's classy. Double classy! Al _________________   Posted: Sun Jan 29, 2012 7:02 pm Slavia Moderator Joined: 31 Mar 2008 Posts: 4382 Location: Waseca, Minnesota, USA Quote: Double classy! All that and then some. _________________ ¡Listo! ¡Apunte! ¡Fuego!   Posted: Mon Jan 30, 2012 12:15 pm oddtodd Silver Status Member Joined: 30 Dec 2008 Posts: 2029 Location: Richmond, IN USA Brass and bluing always look so good together. _________________ Airguns: Two starlings talking "Larry, did you hear that? Larry?? LARRY!!!!" 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