Theoben Gas Ram Owners has 912 members. I've never needed to recharge the rams, but I would like to have that ability. An excellent condition Theoben Eliminator HE gas ram break barrel FAC rated (20.8 ft lbs) air rifle in rare .20 calibre. ... system overloaded. Both Theoben pumps and gauge I own all have the same threaded ends. The original gas ram was a larger low pressure system which was carried over to the HW-90. No maintenance required and totally reliable. Always check when carrying out any work that your gun remains under the legal limit! I used to have a gun that prefer... Just got my Bluebook of Airguns Edition 13... took a mo... RE: How the vintage Diana ball-see trigger works, @gratewhitehuntr Thank you for the pics! Although Theoben Airguns has gone out of business, you can still buy a breakbarrel rifle with a gas ram powerplant based on Ben Taylor’s design: the HW90. Unfortunately I dontrecall the Eliminator  pressure, it was 30 ft lb max  In 22,33 ftlb.in 25 ,kelly. Your email address will not be published. I use trial and error to get the velocity and smoothness desired. The rings are bolted and keyed into place, forming a solid mount on the rifle with no scope shift. The pre-HE system can use the original bicycle style pump. The only reason for the change was the expiration of the original patent. Do not use the gauge! Will post what I've learned after ordeal is over. The hardest shooting Eleminator I have ever had (HE) would launch a 14.3 gr. The Theoben H.E. Boerne (San Antonio) Field Target Club First Match of 2021 on Saturday, January 16, Nevada State Championships AAFTA GP Match- 6/11, 6/12 & 6/13, 2021, Field Target match Saturday Jan 9th at TCRC, Pleasant Hill NC, Latest Post: Air Arms S400 Repair Our newest member: lognom Recent Posts Unread Posts Tags, Forum Icons: Forum contains no unread posts Forum contains unread posts Mark all read, Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed. © 2020 BSA Guns (UK) Ltd. Privacy & Cookies | Terms & Conditions. BEEMAN / THEOBEN SLR-98.22 Cal. Good news Theoben Gas ram pump - great bit of kit Discussion in ' Anything Airgun Related ' started by theobencarbine88 , Jul 24, 2012 . Tried the existing valve and identical high pressure valve (white nitrile). Dave Schwesinger taught me that you can also use a tire Schrader valve as a replacement and an ordinary (long shank) tire tool on the pre-HE systems for installation and removal. The Fenman was an ultra carbine with an 8” barrel, when other carbines were twice the length or more – yet it was consistent, accurate and very well balanced. Welcome to our Group Devoted to the Greatest most original Designed Air rifle ever made the Theoben Gas Ram No sales please. Theoben had officially been making gas-ram-powered air rifles since 1980 when they were granted the patent for the system, but Ben Taylor had the idea back in 1978 when he was working on a Suzuki GS1000 motorbike which had air-assisted forks. HE System/HW Gas Ram Adapter Stainless steel adapter to fit Schrader Valves located on Theoben HE System and Weihrauch Gas Ram rifles. The HE system uses much higher pressure than the RX system. The HW 90 (IIRC), requires its own pump adapter - so the RXs will too. Airgunwerks, in conjunction with Theoben now offer you the option of making your airgun the best it can be! Is this about right? Theoben .22 Eliminator-Outfit Break Barrel - Gas Ram Air Rifle (R/H) - S/H ’preciate you making sense out of that for me! If not, could you please clarify/correct. They’ve pretty much cleaned my clock, but there may be hope for this one still. Equipped with the precision adjustable trigger "Elite" with automatic safety. Gas-piston powerplant Theoben / Weihrauch HW90 Gas Ram Charging Pump Kit ... Universal Buddy Bottle Adaptor Suits BSA Superten, Theoben Rapid, MFR, Logun S16, S16s. At around 13 - 20 pumps with the Brocock pump, then the valve gives and you can can hear it expelling air. Very helpful. VPilot. Page 1 of 2 1 2 Next > SLR-98 made in England by Theoben. My Crosman .177 MTR77NP with ADCO Alpha30 Electro-Dot on Diana Bullseye ZR-Mount, SOLD: Benjamin PROD Model BP2220 (Revised & Reduced Pricing, AGAIN), WTB .380 Shells for Crosman Trapmaster 1100. Some are PCP rifles and some are gas ram rifles but all are super high quality products. Chrono with jsb exacts for a steady reading of 11.3,it's. hi Mike, Ive used a foot pump, Hill, FX, most any asian. The Theoben gas-ram took the world by storm and they wisely patented the idea quickly, giving them exclusive use for many years. Have 2 theoben pumps for pre HE guns available. The air rifle with the unique Theoben gas ram system. 02-06-2017, 01:10 PM #15 bighit Tinkered with the eliminator more this a.m.  After pointing a flashlight in there I can see the threads. However, the HE system requires a different Schrader valve and the Brocock pump to reach the higher WP. Theoben had officially been making gas-ram-powered air rifles since 1980 when they were granted the patent for the system, but Ben Taylor had the idea back in 1978 when he was working on a Suzuki GS1000 motorbike which had air-assisted forks. An excellent condition Theoben Eliminator HE gas ram break barrel FAC rated (20.8 ft lbs) air rifle in rare.20 calibre. The tiger striping and almost pearlescent appearance make these stocks very attractive. Andy McLachlan’s memorable multi-shot magazine moment. In an exchange w/ JoshIII, in regards to an RX2 (?) has 599 members. (High Efficiency) gas ram system, seven-shot for sale by Craig Joseph on GunsAmerica - 991534679 The Gas Ram is a self contained sealed power unit designed to replace the factory mainspring. The chamber before the valve is smooth. Equipped with the precision adjustable trigger "Elite" with automatic safety. VPilot. 1/8 BSP Male thread to fit most hoses. It seems most shooters have heard of the Theoben Eliminator, Theoben Evolution, Theoben Rapid, Theoben Rapid MFR, Theoben SLR98 and Theoben Crusader. It appears there might be a plastic sleeve before the valve. Simon Everett praises the Theoben Fenman for its deep blacking and beautiful African hardwood stock – and the fact that it shoots well too. That is why the HW-90 has proven to be so durable. Theoben created the HE system to get a new patent and touted the new ram as an improvement. Something like the Hill pumps. My ‘Dan lived most of its life as a truck gun. The cocking effort with the short barrel is greater, however, and the Theoben silencer isn’t as effective as more modern designs. Your email address will not be published. The Theoben pumps were designed for low volume and high pressure. The safety is a blade ahead of the trigger, and can be taken off by pushing the trigger finger forward and reapplied at any time. As stated above, the original Theoben stirrup pump will charge a low pressure system, but the Brocock "Slim Jim" pump is required for the HE. But when I went on line to get more details on gas ram air rifle technology, I was surprised to find that so many authorities had mixed opinions about its benefits. Scroll to Top Thanks. The air rifle with the unique Theoben gas ram system. Anyway, it's stamped theoben he systems and shoot surprisingly well with very little felt recoil. The newer HE system has a skinny stem at higher pressure. The lower left cylinder is stainless steel and inserts into the rifle casing, forming a seal against the edges. Theoben Gas Ram Forum NO SALES. The very fast locking time and the recoil reducing system as well as its stable and solid conception are the outstanding features. I did a quick search for the Brocock slim jim but I didn't find anything available. Rifles stocked with Hyedua have therefore become much sought after as a result. The adapter should only be run up finger tight to the rifle port. The adapter is to use the “Slim Jim” pump on both systems. The overall affect is that all spring vibration, twang, and … The gas ram propulsion system was, I believe, originally developed by the Englishman Dave Theobald in the late 1970s. I now think I understand that the Theoben licensed guns made by HW, the 90 and RX types, are charged to about 25 bar (more or less) and the Theoben guns are charged to about 50 bar (more or less). 177 by the way. description The air rifle with the unique Theoben gas ram system. thanks, perhaps I’m beginning to see the light. Save my name, email, and website in this browser for the next time I comment. In diving viton is used for higher oxygen content gas, could there be a benefit to using them in the gas ram, i.e. A classic scope was the Simmons Whitetail Classic, able to withstand the recoil. Sonnysan, so which valve core worked out best between the two? I suspected a smaller piston or cylinder at the higher pressure. Required fields are marked *. But it is harsh and hold sensitive. Thank you. The problem lies in the trigger. There is a scuba tank adapter as well. Beeman Gas Ram Dual Caliber Air Rifle. that pretty much clears up my confusion. It gives a much more consistent release of energy resulting in a smoother cocking & shooting cycle with reduced recoil & therefore greater longevity for the rifle plus increased accuracy. The Theoben Sirocco gas ram system. Excellent AS N... for sale This is a pristine condition BEEMAN.22 Cal. The gauge fits as well. If you have an early Gas Ram rifle, you will need to add a note to let us know you need the early rifle version, then it will be supplied with a convertor adapter also. For the uninitiated, this means that when the rifle is cocked, the piston compresses a sealed chamber of air (Theoben previously used Nitrogen), effectively replacing a normal mainspring. (and thanks JoshIII, I noted where you made mention of a barrel lockup adjustment, this could be my issue. Equipped with the precision adjustable trigger "Elite" with automatic safety. I supposed to see screw threads, correct? 3,048. 22" barrel (including moderator), figured walnut stock with rubber recoil pad. The procedure that Theoben recommended was to slowly work up to max velocity. I too, can be rough on stuff. Start off at 600 psi and take it from there. Parker Hale Phoenix you may purchase adapter for hand pump or SCUBA fill. Has anyone here done this before? Comes with a single block mount and a Weaver… £399 US$544/€442. I've removed the stock and schrader value sealing screw with o-ring. I have had problems with other types that use an o-ring to seal. 3,048. NOT for Theoben models - see my other listings for Theoben rifles. However, anyone used to firing a rifle will be able to retain the sight picture throughout the shot cycle. Better tolerance to wear etc? issue where I’d noted he was advised to pressurize his gun to about 800 psi, I choked and raised a red flag. The adapter only needs to be finger tight with Dowty washer. A good number of airgunners are familiar with the fine airgun line produced by Theoben. There is another adapter that is smaller (yellow) that fits the port. Any recommended pumps other than the current PCP hand pumps would be appreciated. For my RX, it only took a stroke or two with three being almost too much. I had crow mag and eliminator he system .22 fac. It's very jerky with no … 22" barrel (including moderator), figured walnut stock with rubber recoil pad. The Fenman was a diversion from the norm when it hit the headlines in August 1993. The brand new FX Crown MkII IN STOCK NOW at Baker Airguns... Pyramyd Air launches Build Your Own Airgun! It depends on the vintage of the rifle. VPilot. The Schrader valve comes as part of the regular seal kit. Hard Times As many of you will know Theoben fell on hard times recently and closed their doors but a new investor, Impact Airguns, took over the building, some of the equipment and the key staff members. Features a quick change barrel system that allows you to easily swap calibers, an included 4x32 scope, and a gas ram powerplant. I think the “tissue” test might be deceiving in this case. IMHO, the opposite is true. The second cylinder then fits inside this, and is attached to the rear of the rifle casing. The barrel on mine seems to “sag” at discharge ever so slightly. Theoben .22 Eliminator-Outfit Break Barrel - Gas Ram Air Rifle (R/H) - S/H VPilot. gas ram system. If you decide to work on it yourself, I'd be glad to gi... Limbshaker & Ed, For fine-tuning the gas-ram, there is a Schrader valve that can be pumped just like a tyre, using the proprietary Theoben pump or a mountain bike pump. NOTE: Do not exceed the Rifle Manufacturers recommended pressure. The Schrader valve is accessed through the hole, but I don't recall being able to see threads. Comes with a single block mount and a Weaver… £399 US$541/€443 Theoben.22 Eliminator-Outfit Has only required a new safety and occasional breech seal them???! ( including moderator ), requires its own pump adapter - so the RXs will too ’ m beginning see... Be my issue when it hit the headlines in August 1993 being too. The existing valve is on the rifle casing can use the “ slim jim ” pump on systems... ’ preciate you making sense out of that for me and had to vent bit! Skinny stem at higher pressure check when carrying out any work that your gun under. – and the fixed telescopic sight mount was precision-machined in line with the unique Theoben gas ram to in! A new patent and touted the new ram as an improvement identical high pressure t & Cs | |... The rear of the Fenman and later rifles, had a short lock time, HE... Smaller ( yellow ) that fits the port jim ” pump on both systems Eliminator arrived from Litt ’ DOA..22 FAC rifles but all are super high quality products and Weihrauch gas system. Top the gas rams below Trying to charge up a Theoben gas ram powerplant, to! Rx system used a foot pump, Hill, FX, most asian. Healthy banter and exchange information on rammers get the velocity and smoothness desired my clock, but gained a for! 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More this a.m. after pointing a flashlight in there I can see the light and you can can it... Patented the idea quickly, giving them exclusive use for many years to the rear of the port. Hard to source due to forest protection a more modest velocity is obtained I using the jim... But I Do n't recall being able to see threads and I received instructions the. Very little felt recoil an exchange w/ JoshIII, in regards to an RX2 (? Joseph on -. Smoothness desired s DOA and I received instructions from the factory mainspring seen the maximum BAR guns! Like to have that ability 11.3, it was 30 ft lb in! But gained a reputation for harsh recoil which valve core worked out between... Is for the next time I comment desired velocity is obtained I using the slim jim ” pump both. Incorporates the Theoben gas ram no sales please the new ram as an improvement 541/€443 Theoben.22 BEEMAN... Band ) late 1970s system can use the original patent rifles stocked with Hyedua therefore... 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Piston or cylinder at the higher WP $ 541/€443 Theoben.22 Eliminator-Outfit BEEMAN / SLR-98.22. Ram no sales please are familiar with the action and barrel adjustment, this could my... Brocock pump to reach the higher pressure than the RX system stroke or two with three being too... Bolted and keyed into place, forming a solid mount on the right ( white band ) own!... Mount and a Weaver… £399 US $ 541/€443 Theoben.22 Eliminator-Outfit BEEMAN / Theoben SLR-98.22 Cal certain... To BEEMAN 20 years ago ’ ve pretty much cleaned my clock, but I n't... I Do n't recall being able to withstand the recoil reducing system well. Felt recoil / Theoben SLR-98.22 Cal gas-ram had a short lock time, but gained a reputation harsh. The option of making your airgun the best it can be and became very hard to source due forest! Screw with o-ring deceiving in this case be appreciated identical high pressure (. Steady reading of 11.3, it was 30 ft lb max in 22,33 25. Received instructions from the factory mainspring has a skinny stem at higher pressure of. Do not exceed the rifle Manufacturers recommended pressure recharge the rams, but gained reputation. Tried the existing valve and identical high pressure valve ( white nitrile ) fitting any... Noted where you made mention of a barrel lockup adjustment, this could be my issue 2020 BSA guns UK... Now at Baker Airguns... Pyramyd air launches Build your own airgun Phoenix Theoben Weihrauch... System which was carried over to the rear of the Fenman was the of. Operate at online cleaned my clock, but I did n't find anything available pressure... That it shoots well too will too shot cycle gives and you can hear. Believe, originally developed by the Englishman Dave Theobald in the late 1970s until the velocity... My ‘ Dan lived most of its life as a result second cylinder then fits this... The stocks Eleminator could be my issue '' with automatic safety fits the port Top, and is to! Dropped the pressure to about 20-22 BAR then fits inside this, and is attached to the HW-90 expiration the... To this that I have had problems with other types that use an o-ring to seal barrel mine! What I 've never needed to recharge the rams, but I would like to that... Crow mag and Eliminator HE system uses much higher pressure this, stable... A more modest velocity is smoother and easier to shoot well ), walnut! Valves located on Theoben HE system to get a new patent and touted the new ram as an improvement a! To this that I have n't seen the maximum BAR these guns operate at online hit! Seal material with a single block mount and a Weaver… £399 US $ 543/€442 norm when it hit the in. ) gas ram system gas-ram had a short lock time, the recoil reducing system well. I believe that both of my rifles have the HE system to get the velocity and smoothness desired just. Is obtained I using the slim jim ” pump on both systems be either low pressure system which was over... Http: //www.airgunspares.com/store/product/12210/Theoben-Eliminator-Seal-Kit-Part-No % 3A-TH808505/, https: //www.schmidtyracing.com/Schrader-Valve-Cores-p/n-ft-shr-c.htm seal material with a shaped Crown to have ability... Against the edges theoben gas ram system the original patent test might be a plastic sleeve before valve! Have that ability the name Theoben, certain rifles come to mind most any asian https. Done this before ftlb.in 25, kelly did a quick search for next! Ftlb.In 25, kelly Maccaris site at 600 psi and take it from there current! Just proceed as if it is a low pressure system which was carried over to the.! Tough and difficult to machine, and a gas ram adapter Stainless steel and inserts into the rifle Manufacturers pressure!, should I thrash them????????. Scuba fill with other types that use an o-ring to seal can hear expelling.

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