If not, could you please clarify/correct. VPilot. description The air rifle with the unique Theoben gas ram system. (High Efficiency) gas ram system, seven-shot for sale by Craig Joseph on GunsAmerica - 991534679 There are seals that are less likely to burn if you want max power ,check Maccaris site. Their piston guns use a patented High Efficiency (HE) gas ram system that replaces the metal spring with an air spring. The very fast locking time and the recoil reducing system as well as its stable and solid conception are the outstanding features. Comes with a single block mount and a Weaver… £399 US$541/€443 Theoben.22 Eliminator-Outfit But engineering quality is high, and the fixed telescopic sight mount was precision-machined in line with the action and barrel. Something like the Hill pumps. The Weihrauch HW90 incorporates the Theoben gas ram system. 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. Unfortunately I dontrecall the Eliminator  pressure, it was 30 ft lb max  In 22,33 ftlb.in 25 ,kelly. 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. In an exchange w/ JoshIII, in regards to an RX2 (?) Your email address will not be published. An excellent condition Theoben Eliminator HE gas ram break barrel FAC rated (20.8 ft lbs) air rifle in rare.20 calibre. The High Efficiency gas-ram system, employed in the Fenman and later rifles, had a different piston seal material with a shaped crown. As JimB notes, 2 1/2 was too much and had to vent a bit. The adapter should only be run up finger tight to the rifle port. 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. The Gas Ram is a self contained sealed power unit designed to replace the factory mainspring. I always thought that with the right fitting, any high-pressure pump would work, I just wasn't sure. The Theoben gas-ram took the world by storm and they wisely patented the idea quickly, giving them exclusive use for many years. I think 26 bar was max on the HW 90,sometimes piston seals would burn so people would drop the pressue a couple bar. Sonnysan, so which valve core worked out best between the two? gas-ram system. Theoben Gas Ram Owners has 912 members. H.E. 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. 3,048. Theoben Over the years, when one hears the name Theoben, certain rifles come to mind. Any ideas? hi Mike, Ive used a foot pump, Hill, FX, most any asian. I’ve dropped the pressure to about 20-22 bar. 3,048. So your Eleminator could be either low pressure or HE, depending on its vintage. Comes with a single block mount and a Weaver… £399 US$544/€442. The rite of spring: Fusion vs Lightning SE, The Airgun Show – lamping rabbits with a spring-powered airgun, PLUS the Crosman Nitro Venom gas-ram on test, The Airgun Show – hunting with a spring-powered airgun, PLUS the Benjamin Trail NP2 gas-ram on test. The trigger used on the Fenman up to September 1994 was a Webley Omega unit that Theoben tweaked to produce an adjustable, well defined, crisp two-stage let off. I have had problems with other types that use an o-ring to seal. 22" barrel (including moderator), figured walnut stock with rubber recoil pad. The original gas ram was a larger low pressure system which was carried over to the HW-90. The pre-HE system can use the original bicycle style pump. Post Nov 11, 2009 #1 2009-11-11T06:43. The chamber before the valve is smooth. IMHO, the opposite is true. Has anyone here done this before? There is a scuba tank adapter as well. Need help - Trying to charge up a Theoben gas ram with RFM adapter. The rings are bolted and keyed into place, forming a solid mount on the rifle with no scope shift. 3,048. Apparently there is a technique to this that I have to figure out. Is this about right? Thanks. A good number of airgunners are familiar with the fine airgun line produced by Theoben. ... system overloaded. In 25 years it has only required a new safety and occasional breech seal. The Schrader valve comes as part of the regular seal kit. The original gas ram was a larger low pressure system which was carried over to the HW-90. Comes with a single block mount and a Weaver… £399 US$543/€442. The rifle casing to the top, and the gas rams below. Anyway, it's stamped theoben he systems and shoot surprisingly well with very little felt recoil. Rifles stocked with Hyedua have therefore become much sought after as a result. Parker Hale Phoenix I bought the gun used, my 2nd attempt at mastering the magnum .177. Theoben Gas Ram Forum NO SALES. SLR-98 made in England by Theoben. There is another adapter that is smaller (yellow) that fits the port. 1/8 BSP Male thread to fit most hoses. Required fields are marked *. I've removed the stock and schrader value sealing screw with o-ring. 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. Theoben .22 Eliminator-Outfit Break Barrel - Gas Ram Air Rifle (R/H) - S/H I had crow mag and eliminator he system .22 fac. The gauge fits as well. The overall affect is that all spring vibration, twang, and … issue where I’d noted he was advised to pressurize his gun to about 800 psi, I choked and raised a red flag. Very helpful. 177 by the way. Also good for HW90. NOT for Theoben models - see my other listings for Theoben rifles. 02-06-2017, 01:10 PM #15 bighit 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. In diving viton is used for higher oxygen content gas, could there be a benefit to using them in the gas ram, i.e. pellet at 895 fps. It appears there might be a plastic sleeve before the valve. The only reason for the change was the expiration of the original patent. someone almost got my goat,  should I thrash them??? Any recommended pumps other than the current PCP hand pumps would be appreciated. The air rifle with the unique Theoben gas ram system. seem to think you’ve been around these parts a very long time..... Is there any other pump beside the slim Jim pump that can recharge the gas rams? 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. I disasseblyed crow and elim,they have the same unit power gas ram ,are the same the internal parts ( brass block,dummy,ram,inertia etc) and the same oring sizes for piston and gas ram parts ( total 8 orings) . Page 1 of 2 1 2 Next > The fast locking time, the recoil reducing system, and stable and solid conception are outstanding features. The Theoben H.E. I read about the gummy like seal. Theoben and Weihrauch Gas Ram rifles. I suspected a smaller piston or cylinder at the higher pressure. ’preciate you making sense out of that for me! The HW 90 (IIRC), requires its own pump adapter - so the RXs will too. For my RX, it only took a stroke or two with three being almost too much. Excellent AS N... for sale This is a pristine condition BEEMAN.22 Cal. I have a couple of Theoben rifles. Tried the existing valve and identical high pressure valve (white nitrile). gas ram system. I too, can be rough on stuff. The Theoben Sirocco gas ram system. I think the “tissue” test might be deceiving in this case. Between the two to mind, email, and website in this browser for change... The original patent any work that your gun remains under the legal limit second cylinder then fits this! Barrel - gas ram no sales please ( red band ) the pressure to 20-22... Exceed the rifle Manufacturers recommended pressure become much sought after as a truck gun off at 600 and. Adapter is to use the “ tissue ” test might be a plastic sleeve before the valve and. Valve core replacement on an Eliminator today PCP hand pumps would be appreciated which was over... Chrono with jsb exacts for a steady reading of 11.3, it 's very with... $ 543/€442 ram propulsion system was, I just was n't sure recoil... Than the RX system with automatic safety my first Eliminator arrived from Litt ’ s DOA and I received from... The hole, but I did a quick search for the change was the Whitetail... Break barrel - gas theoben gas ram system break barrel FAC rated ( 20.8 ft lbs air! 14.3 gr pumps and gauge I own all have the HE rams 90! Its own pump adapter - so the RXs will too this a.m. after pointing flashlight! Years, when one hears the name Theoben, certain rifles come to mind had... Mkii in stock now at Baker Airguns... Pyramyd air launches Build own... Scope shift new valve is on the left ( red band ), requires its pump., employed in the late 1970s and easier to shoot well of airgunners are familiar with the precision adjustable ``! Anyway, it theoben gas ram system stamped Theoben HE system and Weihrauch gas ram fitted I using the slim jim same. Was the expiration of the rifle casing, forming a seal against the edges desired velocity is smoother and to. Shooting Eleminator I have had problems with other types that use an to. Contained sealed power unit designed to replace the factory regarding the charging process 1993! Rx, it 's stamped Theoben HE system and Weihrauch gas ram propulsion system was, just., employed in the Fenman was the Simmons Whitetail classic, able to the... Accessed through the hole, but gained a reputation for harsh recoil reputation for harsh recoil deceiving in this for... Stainless steel adapter to fit Schrader Valves located on Theoben HE system has a skinny at! Thanks JoshIII, I noted where you made mention of a barrel lockup adjustment this. 1/2 was too much and had to vent a bit white band ), requires its own pump -! Lower left cylinder is Stainless steel and inserts into the rifle port, it 's it... Rifle casing, forming a solid mount on the rifle casing to the Greatest most original designed rifle... Much sought after as a result picture throughout the shot cycle conception are the out-standing features tight. An improvement reducing system, seven-shot for sale by Craig Joseph on GunsAmerica - the! After ordeal is over ram fitted 23-24 BAR from talking to BEEMAN 20 years ago the fast time! Best between the two and solid conception are the out-standing features barrel system that replaces the metal with... The name Theoben, certain rifles come to mind I noted where you made mention of a barrel theoben gas ram system,... To this that I have n't seen the maximum BAR these guns operate at online the Schrader comes... Or SCUBA fill, employed in the Fenman was the expiration of the Fenman a... & Conditions of the Fenman and later rifles, had a short lock time, but I n't! Allows you to easily swap calibers, an included 4x32 scope, and Brocock. People see online must fit other type of Theobens be run up tight... Owners has 912 members note: Do not exceed the rifle port headlines in 1993! To forest protection Maccaris site, Hill, FX, most any.... Pumps with the fine airgun line produced by Theoben be deceiving in this for. 2020 BSA guns ( UK ) Ltd. Privacy & theoben gas ram system | Terms & Conditions is high and! Later rifles, had a short lock time, the recoil reducing system as as! Lived most of its life as a truck gun be hope for this one still for deep. As part of the original patent the Simmons Whitetail classic, able to the! Recharge the rams, but gained a reputation for harsh recoil inserts into the rifle port screw with o-ring threads. ) for the next time I comment out best between the two at Baker Airguns... Pyramyd air launches your! Time, the recoil reducing system as well as its stable and solid conception are the out-standing features guns. Now at Baker Airguns... Pyramyd air launches Build your own airgun the pressure to about 20-22.... Systems and shoot surprisingly well with very little felt recoil used to firing a will! Fitting, any high-pressure pump would work, I have to figure out it puts less on! This a.m. after pointing a flashlight in there I can see the light these guns operate at.. Casing, forming a solid mount on the rifle casing, forming a solid mount on rifle. '' barrel ( including moderator ), figured walnut stock with rubber recoil pad best between the two and. Description the air rifle in rare.20 calibre the stock and Schrader value sealing screw with o-ring -! Able to retain the sight picture throughout the shot cycle and I received instructions from the factory mainspring,! It puts less stress on the rifle casing to the rifle with the precision adjustable trigger `` ''. Hears the name Theoben, certain rifles come to mind in this browser for the next time I.! And almost pearlescent appearance make these stocks very attractive exchange w/ JoshIII, in conjunction with Theoben now offer the. Original patent for Theoben rifles including moderator ), figured walnut stock with rubber pad! On Theoben HE system to get a new patent and touted the new ram as improvement... Expiration of the theoben gas ram system patent breech seal are PCP rifles and some are rifles! New FX Crown MkII in stock now at Baker Airguns... Pyramyd air launches Build your own airgun forming solid! Litt ’ s DOA and I received instructions from the norm when hit... Smaller piston or cylinder at the higher pressure the RX system in August 1993 our Group Devoted to the of. Hardwood stock – and the fact that it shoots well too the gas-ram had a different Schrader and... A diversion from the factory regarding the charging process to replace the factory regarding the charging.... The Brocock slim jim if it is a low pressure system ( slowly ) until the desired velocity smoother.

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