Click Here for AirGunHome.com Main Page AirGunHome.com: THE Worldwide Airgun Forum

Air Gun Home Forum Index » Rifles » Umarex AirMagnum 850 bulk fill Goto page 1, 2, 3  Next    View previous topic :: View next topic    Posted: Sat May 19, 2007 5:13 am katchenup New Member Joined: 06 May 2007 Posts: 8 Check out the mod I did on my 850 . there is also a post on yellow forum, a couple of pages down on how i did it.   Posted: Sat May 19, 2007 8:06 pm AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6929 Location: "Out There" katchenup wrote: Check out the mod I did on my 850 . there is also a post on yellow forum, a couple of pages down on how i did it. What did that do to the balance of the gun? Much harder to handle- or reasonably OK? _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront balance   Posted: Sat May 19, 2007 8:20 pm katchenup New Member Joined: 06 May 2007 Posts: 8 I think it actually helped it. the gun only weighs a little over 5 pounds anyway & it gives a much more solid forearm by using the 9oz. Co2 bottle.   Posted: Sat May 19, 2007 8:26 pm AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6929 Location: "Out There" So- I'm wondering, and not familiar with the internals of the 850- is there a long rod to hold a 12g caplet in it (i.e. a push-pin to force the caplet against the piercing pin? Did you replace this pin- or use the caplet tube as a chamber/tank? And lastly- did you use all custom parts- or is someone making a bulk "kit" for this gun? _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront co2 mod   Posted: Sat May 19, 2007 8:38 pm katchenup New Member Joined: 06 May 2007 Posts: 8 I came up with the idea myself. If you'll go to yellowforum.com I've posted how I did it & the fittings I used. It's about 3 pages back by now. I'll be happy to answer any ques. Jim   Posted: Sun May 20, 2007 8:32 am broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands It probably increases the amount of shots, but I honestly think it looks 'off'. Why make a rifle without the cap which I think already looks quite bulky... It doesn't make a lot of sense to me. Are you planning to replace the stock or something, so it looks like no parts are missing? _________________ BIG GAP   Posted: Sun May 20, 2007 11:07 am AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6929 Location: "Out There" I copied the info from "yellow" before it slides so far down the list no one will find it again- hope you don't mind, Jim: katchenup wrote: As far as fittings, I started from the gun outward: A brass 3/8" male flare thread to screw into the gun where the 88g co2 tank did screw into. It has to be a flared fitting to close up the vent holes on the original gun fitting. The other end of that fitting is 3/8" female, add a 3/8"male to 1/4" female fitting. Then go to your local paintball shop and there they will have a basic adapter that is used at the bottom of most paintball guns. I can't remember the name of it but is approx. 3 inches long, the Co2 bottle screws into one end, then there is a flat area with 2 screw holes for mounting ( you won't need to use these holes on this application) and there will be a 1/4" fitting on the end of it. Cost was $6.00 at my local paintball shop. I took my gun apart from the stock( 2 screws) and then removed the brass fitting the 88g Co2 screws into. I put it in a vise and started adding my fittings, using teflon tape & paste. Once you have all of that together, assembly the barrel back to the stock & remove the dovetailed adapter that holds the forearm to the barrel. Then simply screw your fittings into the gun & then add the 9oz. tank & tighten it all in until secure. I don't miss the forearm at all. As a matter of fact the bottle is very solid and makes a perfect replacement of the forearm !!! Balance is still very good also. If a person wanted to get very creative, you could add a power adjustment valve(shut off valve) to the fittings & drill a small hole in the side of the stock for the regulator knob to stick out to use. I hope this explains how I did mine !! Good luck & it's worth your time & upfront expense. Jim thanks   Posted: Sun May 20, 2007 12:57 pm katchenup New Member Joined: 06 May 2007 Posts: 8 thanks for posting it on your site. I think it will be helpful to people that like the looks & benefits. To me it doesn't look any more off than the Thobeon or Datstate with the wooden stock with the Co2 bottle coming out of the stock also. thanks,Jim   Posted: Sun May 20, 2007 3:03 pm StevieLaner7777 Moderator Joined: 07 Mar 2007 Posts: 1060 Location: Herefordshire, UK Amen!! Stevie _________________ "Who Dares Wins" - SAS 22nd Regiment Hereford. Re: thanks   Posted: Mon Jul 16, 2007 2:29 am broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands katchenup wrote: thanks for posting it on your site. I think it will be helpful to people that like the looks & benefits. To me it doesn't look any more off than the Thobeon or Datstate with the wooden stock with the Co2 bottle coming out of the stock also. thanks,Jim I think that the theoben or daystate have a more finished look since the stock ends a bit further then where the bottle starts. It's all taste off course. I simply think it would look better if you used that black cap to fill some of that space. That should be achievable. _________________ BIG GAP   Posted: Sun Jul 22, 2007 4:12 pm broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands It seems though, that I will probable have to go the same way if I want to become more affordable... So probably, my gun will be looking a bit the same in the future... _________________ BIG GAP tape and paste?   Posted: Wed Nov 14, 2007 9:48 pm jjensen6387 Member Joined: 14 Nov 2007 Posts: 13 Location: Crookston, MN exactly what kind of paste did you use and what parts are we taping and/or pasting together? thanks jim!   Posted: Thu Nov 15, 2007 12:56 am AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6929 Location: "Out There" Jim is referring to Teflon tape or paste where pieces are screwed together to help seal them. Teflon tape or paste is used in many sealing applications- for example in plumbing, air compressor fittings and automotive fuel fittings. It can be bought at any hardware or plumbing supply store. He used this wherever there was a screwed-together joint- i.e. the paintball adapter to the 850's input port and such. _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront   Posted: Thu Nov 15, 2007 9:36 am jjensen6387 Member Joined: 14 Nov 2007 Posts: 13 Location: Crookston, MN hey thanks! that helps i just have to figure out how many fittings he was talking about and how that bottom line paintball adapter would work cause the ones i have found are set up for hoses? _________________ Josh "Skinny" Jensen Owner/Operator: Crappie Junction: Custom Rods "OSK or don't shoot at all!!"   Posted: Thu Nov 15, 2007 9:42 am AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6929 Location: "Out There" Hopefully Jim will pop around here again to be able to answer questions. You could try "Private Messaging" him- it should notify him by email there is a message waiting then. As for the hoses- that is so people can attach a "remote" tank- i.e. a tank hanging off their belt for example, with only the hose running to the gun (lighter than hanging a tank directly on gun, but also clumsier to maneuver). _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront Umarex AirMagnum 850 bulk fill     Air Gun Home Forum Index » Rifles You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum All times are GMT - 5 Hours   Page 1 of 3   Goto page 1, 2, 3  Next All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Select a forum Main Forums----------------AirGunHome Q&AGeneral Air Gun Questions and TopicsPicture GalleryTarget Shooting: Casual, Fun and CompetitionHunting, Pest Control, Varminting People/Events/Airgun Issue Discussion----------------Introduce YourselfThe BS TopicClubs/Events/Regional/Political Airgun Issues Maintenance, Modification and Reviews----------------RiflesPistolsAntique, Collector and Novelty AirgunsBB GunsPellets/AmmoOpticsAccessoriesAirgun Smithing Buy, Sell or Trade Forums----------------For SaleWant to Buy   Note: If you are seeing "Please enter your username and password to log in." Your browser cookies have been reset or you need to register to access the topic in question. Use the 'Register' button near the top left of this page. Click Here for AirGunHome.com Main Page Powered by phpBB © 2001-2004 phpBB Group Partial Styling Supplied by Vjacheslav Trushkin Themes Database.