Great info on this Blog. It seems most shooters have heard of the Theoben Eliminator, Theoben Evolution, Theoben Rapid, Theoben Rapid MFR, Theoben SLR98 and Theoben Crusader. You can also buy gas ram replacements for a limited range of other springers. More benefitsCompressed gas weighs less than a coiled steel mainspring. I hope he gets it going as a gas ram, it would be a pity to put a spring in it. What do you mean by register? I will call them gas springs, and you’ll all know what I mean. Who are Theoben Ltd? I bought it new in 1992 from Dr. Beemans Santa Rosa store before he sold. It’s good to have current owners telling everyone how things are for them. To start viewing messages, select the forum that you want to visit from the selection below. Topic starter August 31, 2020 22:20:36 . My old HW90 is still going strong despite years of neglect by previous owners. Works and shoots great, no issues. There are no upgrades. Thanks for the post. Essex. Jim and I have the exact same pump, so using today's PCP pump is still untested. Gas springs also use very little lubrication, and they aren’t as sensitive to low temperatures as coiled steel springs. Theoben .22 Evolution-Realtree dipped Break Barrel - Gas Ram Air Rifle (R/H) - S/H The fast locking time, the recoil reducing system, and stable and solid conception are outstanding features. 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. Thanks for that report. I have never adjusted the spring pressure but find the heavier pellets to be the most accurate. Theoben gas ram « on: January 22, 2009, 01:17:21 PM » I would like to know if the Theoben gas ram will fit the Gamo and Bam rifles and if so were can I find the gas ram? The air rifle with the unique Theoben gas ram system. However, this is the largest barrier to rebuilding a Theoben. Whats people lookup in this blog: Theoben Evolution Spare Parts; Theoben Fenman Spare Parts; Share this: Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new … Browse Theoben Air Rifles for sale from our community of shooting enthusiasts on the UK’s #1 gun marketplace. I’m sure they do have baffles, but my original statement stands. Theoben Gas ram pressure; If this is your first visit, be sure to check out the FAQ by clicking the link above. A massive thank you to Jim Bentley, as I could not have completed the project without him. £325 US$442/€360. Rebuilding a Theoben Eliminator Gas Ram: Step-by-Step Instructions Last Post RSS sonnysan (@sonnysan) Joined: 3 years ago. Replies: 14 Last Post: 26-02-2006, 10:58 PM. Theoben rapid 7 .22 Air Rifles. Topic Tags: Theoben (4), Classic HE (1), Air Rifle (585), Gas-Ram (3), Forum Statistics. Fantastic job. Posts: 351. 2 x Breech Seals for Theoben Fenman Evolution Countryman Sirocco Classic BK66. 4 Visitors Online. Messages: 2,865 Likes Received: 28 Location: south wales. Gas Rams will last for thousands of shots with no loss of power or performance. While the noise might drop by 10 decibels, the gun will not be silenced because the powerplant is where the bulk of the noise comes from. I would suspect that it probably does because HW seems to modify it’s U.S. models only at the request of Beeman and I can’t see any advantage to removing that feature. I hope he gets it going as a gas ram, it would be a pity to put a spring in it. T&Cs | Rules | Limitations | Privacy Policy. £499 US$683/€557. What do you want to register for? Discussion in 'Anything Airgun Related' started by c96, May 6, 2016. c96 Donator. I also have the hand pump and the gauge. Calibre.22 Model rapid Theoben rapid 7 owners club forum 1 11 photos Theoben SOLD Air Rifles Subcategory Air Rifles Make Theoben Mechanism Break Barrel Calibre - Model SOLD Theoben. Terminology firstGas springs are also called gas struts by spring makers in the UK. £499 US$678/€558. Equipped with the precision adjustable trigger "Elite" with automatic safety. The air rifle with the unique Theoben gas ram system. GNerol. All Theoben gas springs, like the one on your HW rifle, used to be adjustable. Over the years, when one hears the name Theoben, certain rifles come to mind. 11. There is no reason for us to test or buy new equipment since we already have the tool to do the job. One question – does the RX-2 have an exposed Schraeder valve for adjusting the gas spring? Theoben .22 Evolution-Realtree dipped Break Barrel - Gas Ram Air Rifle (R/H) - S/H I've only ever charged one of those Theoben gas ram rifles, and that was via the port at the rear. Very helpful. Good job Sonny and Jim! They DO NOT reduce “lock time,” however! I have fired somewhere around 10,000 shots with this gun. The spring-piston powerplant makes about 80 percent of all the noise the gun makes. 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. Not only do we offer the entire Theoben line up of handbuilt rifles, we offer at the very least the same high quality service as the previous importers. I hadn't looked at them, just saw 'Theoben Gas Rams' listed in the menu. Please find below the exploded parts diagram, parts list and available spare parts for the Theoben gas-ram model air rifles / airguns. I have fixed the “gas ram” mention in the Wikipedia airgun article (that is, after all, the point–you can fix it!). Now our readers will know where to get their Theoben airguns. By Weed puller in forum General Airgun. IIRC, only the HE ram has the inertia plug? The Buna o-rings were bought from Jim from Brad's classifieds. If in any doubt ask your local gunsmith to carry out the work for you. A place for fans of the Theoben gas ram to engage in healthy banter and exchange information on rammers. William Tell Extreme Poster . They are peachy guns IMO The pump from Theos costs £70 but is the same as the Slim Jim from Brocock and you need the hose at £19. If you do not see what you are looking for, we may still be able to help. So the time that the pellet remains inside the gun after the disturbing movement (recoil) and vibrations begin is exactly the same in both types of powerplants. I'd borrowed a 'Slim Jim' pump to do the job, but it wasn't up to it, so with the owners nod, connected it up to a divers bottle and nervously eased in 750psi. You save almost a full pound with a gas spring. Anyone out there have experience with these rifles? Fitting a Gas Ram will require a moderate degree of gunsmithing competence. SLR-98 made in England by Theoben. H.E. The stroke of the piston on a 12 ft lbs Theoben gas ram is 2.6 inches “HE” or not. 1/8 BSP Male thread to fit most hoses. But on the other hand in England and Germany, the maximum power for airguns is limited for some odd reason. There is more to cover – things like overpressurizing the gas spring, piston seal burnout, the unavailability of the hand pump to regulate the gas spring pressure, longevity and maintenance, best pellets and scope mounting, to name a few. A Theoben Eliminator, better known in the U.S. as the Beeman Crow Magnum, takes as much as 60 lbs. Please read carefully the description in the parts for which models the parts work with. It did not silence the gun. Robert Beeman wrote an interesting article on the legality of silencers on his personal website. With all these benefits, you might think gas springs are the only way to go – but wait until you hear the down side before making your decision. Jim told it really didn't matter, so I used motor oil from one of my vehicles. Deze RAM Target schietkast en kogelvanger is extra stevig door de puntlas verbinding. Weihrauch HW90 kaliber 5,5 mm. tidy theoben with adjustable out put gas ram scoped and moded ready to go to work firearms cert required and collectable shoots well. While that is about equal to the Gamo Hunter 1250, a powerful coiled-spring rifle, the Webley Patriot that develops almost as much power as the Eliminator only requires 50 lbs. Re: Theoben Gas Ram system HW 90 Post by hamiclar01 » Wed Feb 03, 2010 2:20 pm may i re-iterate that mere power in an airgun is a pointless test of comparision. We see a similar situation with Chinese models, the XS/QB79 has just arrived here and is being touted as “new” and “exciting”, but has been available in America for several years. Thank you for revealing the "mystery" of the rams to the community!!! 5,581 Posts. © 2020 BSA Guns (UK) Ltd. Privacy & Cookies | Terms & Conditions. I agree that the super tune did smooth it up a bit. £ 7.50 Manufacturer Air Arms, Airgun Technology, Alros, Brocock, BSA, Colchester Game Keeper, Daystate, FX Sweden, Gunpower / AirForce, Hatsan, KalibrGun, KRAL Arms, Ripley, RWS, Theoben; Silicone Fill Probe Grease i am looking at replacing the spring in my BSA superstar with a theoben gas ram. Gas spring guns have a sharper jolt when they fire. 11e. It is 'self loading' spring loaded magazine of pellets similar to that used in a rapid. I've had a new Theoben punp for the gas rams for years. tidy theoben with adjustable out put gas ram scoped and moded ready to go to work firearms cert required and collectable shoots well. I also interviewed Ed Schultz, Director of Engineering for Crosman Corporation, to get his views of Crosman’s Nitro Piston Technology. Theoben Gas Struts. I believe the inertia plug has a o-ring. "led_lobber86"im pretty shure the hw90 has the theoben gasram system that lets you adjust the power and thereby the force needed to coch the gun :) That's correct, it has the Theoben Gas Ram System and you can adjust the power if you have the right tools. Springfield Armory M1A Underlever Pellet Rifle, Powered by WordPress. Trade Seller. Has anyone have the info on the correct gas ram pressure for this calibre and for .177, .22? Theoben Gas Ram Owners has 912 members. ... Speciale tool om uw Theoben gemakkelijk af te koppelen na het vullen! If I’m seeing this right, you have a $29 airsoft gun. When I released the air pressure in my .20 caliber Crow Magnum, the cocking effort dropped to about 46 lbs., but the muzzle energy also dropped to around 20 foot-pounds. You stated that gas spring guns are no longer available yet they’re hugely popular in the UK and readily available in HW and Theobens. The very earlier ones consisted of a highly polished tube that slots into the piston with sylicon o rings which creates a seal for the air in the ram. We both believed the airgun community deserved the know how to work on these guns, so here it is. He mentioned that in California it’s easier to get a permit for a machine gun than it is to get one for a silencer if you can at all. Theoben evo piston head part no th101031 john knibbs 2 x theoben gas ram breech barrel o ring seals ref 66 uk room theoben evolution 22 air for secondhand theoben evolution 177cal 32195 air er. Gas “ram” appears to have been made up by airgunners. Description: This is a pristine condition BEEMAN .22 Cal. I will be using the rifle for hunting and casual plinking-target shooting. 129. Theoben USA has been the official importer of Theoben air rifles for over a year. € 5, 50. Theoben .22 Eliminator-Outfit Break Barrel - Gas Ram Air Rifle (R/H) - S/H (2) S/H. I guess noise pollution is an issue there. Receive 10% off your next order when you sign up for PyramydAir.com emails. I will be using the rifle for hunting and casual plinking-target shooting. Buckinghamshire. While the piston in a gas spring gun does its thing faster than a conventional spring piston, the pellet does not begin moving until the piston has come to a stop. If they’re so great, why aren’t they available anymore?I’m not really sure. The RSS feed from this blog? I was the Senior gunsmith for Beeman for almost ten years, and have been in the airgun industry for over 24 years now. If you hang onto one like it’s a firearm, prepare to get your cheek slapped! CRX power adjusting. Gas Ram comparison HW90, RX-2, Theoben??? Theoben Sirocco Deluxe Left Hand.22 Air Rifles Subcategory Air Rifles Make Theoben Mechanism Gas Ram Calibre.22 Model Sirocco Deluxe L. Grade B. Thank you for posting this information. I do feel that the Beeman tune smooths the cocking and firing cycle. 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! I could not remove the inertia plug: What viscosity of motor oil did you use? My personal experience and documentation on rebuilding a Theoben rifle with no knowledge prior to starting the project. A quick search shows that even then, most of the manufacturers also use the term “spring” to make it clear what they are talking about. Umarex ReadyAir portable compressor: Part 2, Benjamin Marauder Semi-Auto (SAM) PCP Air Rifle: Part 3, The AV-46M Single Stroke Pneumatic Match Air Pistol: Part 3, Benjamin Marauder Semi-Auto (SAM) PCP Air Rifle: Part 2. Welcome to our Group Devoted to the Greatest most original Designed Air rifle ever made the Theoben Gas Ram No sales please. Just got a little extra cash and now seems like the time to do it. Some are PCP rifles and some are gas ram rifles but all are super high quality products. Hard Times. Those gas-ram models put them on the map, and my two rivals this month both originate from the Theoben stable. The only reason for the change was the expiration of the original patent. When I look at the grafik, there must be two seals in the gas spring and if I leave it cocked the gas is under high pressure. My personal experience and documentation on rebuilding a Theoben rifle with no … Theoben created the HE system to get a new patent and touted the new ram as an improvement. The o-rings inside the ram broke into pieces the moment I tried to manipulate them. Theoben and Weihrauch Gas Ram rifles. 10. A new stock design incorporates an extended forearm, a high cheek piece, checkering on the pistol grip, and a rubber butt plate. These two benefits make gas spring guns valuable to hunters. My advice is to not add air until you confirm the velocity withy a chronograph. Is there a good substitute pump since the slim jims are rare? You may have to register before you can post: click the register link above to proceed. Well, it’s only 12 foot-pounds and it’s going to cost a lot more than a U.S.-spec gun after import. Should people want to contact us, or view the products they can go to our site http://www.Theobenusa.com or there are links from the Theoben UK website to us. Shawn. Never dry-fired!! of cocking effort. £4.89. this is where smoothness of operation, recoil, trigger crispness come into play. A .22 caliber Diana RWS 48 develops 22 foot-pounds with just 33 lbs. Trade Seller. How to Treat Your Wooden Stock and Lock-Tite Your Stock Screws for Better Springer Accuracy---It's Easy, (but, A Lot of Words), 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. theoben gas rams. Not only rebuild it, but took the time to take pictures and do an excellent write up! Theoben .22 Eliminator Break Barrel - Gas Ram Air Rifle (R/H) - S/H (7) S/H. If you decide to "de-gas" the ram and start with a fresh charge Post Dec 19, 2015 #8 2015-12-19T03:48 Have pump connected to gun, put in 25 pumps twice and the pressure in the gas ram did not increase. I don't know the exact dimensions. The mighty mystery of the big Theoben has had its DNA code cracked. btw how the heck can i register? A Google account? Dauntsey Guns Ltd. 3 photos. Dayum, this .pdf you guys have created could be another "shot heard around the world". Guys, Sonny went in to this project blind! An excellent condition Theoben Eliminator HE gas ram break barrel FAC rated (20.8 ft lbs) air rifle in rare .20 calibre. Merk : Weihrauch Type : HW 90 Kaliber : 5,5 mm / .22 Cal. Airgunwerks, in conjunction with Theoben now offer you the option of making your airgun the best it can be! Just recently had it super gas charged and tuned by Beeman – not because the power plant failed but because the safety broke and wouldn’t allow me to fire. The gas ram design is pretty much the same in all of the theoben gas ram range the only diffrence with the eliminator is the stock and the power out put. © 2020 BSA Guns (UK) Ltd. Privacy & Cookies | Terms & Conditions. Theoben .22 Break Barrel - Gas Ram Air Rifle (R/H) - S/H If you feel confident enough to replace a mainspring then there shouldn't be any issues with fitting a Gas Ram. (High Efficiency) gas ram system, seven-shot removable magazines, underlever cocking, automatic safety. I’ve never lowered or raised the pressure, used it to only verify it was set correctly after sending it in for a super tune with special “super gas” (nitrogen) charging. Benefits of gas springsGas under pressure never takes a set or breaks down, as I discussed in the post about coiled steel mainsprings, so you can leave a gas spring gun cocked a long time with no power decrease. So you would be silencing what is already the quietest part of the gun’s noise. Really appreciate the effort put into this. £350 US$479/€391. of effort to cock, while a rifle of equal power and a coiled steel spring might take only 25 lbs. My old HW90 is still going strong despite years of neglect by previous owners. Theoben Gas Ram Adaptor suitable for Fenman Sirocco Evolution etc and HW90. It needs more pressure because the later Theoben’s have a short stroke length of just over two inches, with a cylinder bore of just over an inch. All forum topics. No springers.... And about the only way to find one is search, search and search some more!!! I'm inclined to think that this will make the Eliminator more desirable to seek out. That's how I learned that too much pressure also lowers velocity and will destroy your rifle. Theoben / Weihrauch HW90 Gas Ram Charging Pump Kit From £ 12.50 Manufacturer Theoben, Weihrauch; Buddy Bottle Protective Sleeve. Someone has even gone to the trouble of making a Wikipedia entry for gas ram, so the confusion will be perpetuated. I should of took two photos of the ram while it was out of the gun, as mine does not exactly look like the one below. An internal piston compresses the sealed air or gas into a smaller space (see the drawing below). Break barrel Gas Ram FAC Air Rifle With Sling, Moderator and Scope (28flb) just serviced by Impact ... £ 450. Fill Adapter for Theoben/HW Gas Ram Rifles. The entire sealed gas spring unit weighs a little less than the steel piston it replaces. You can also buy gas ram replacements for a limited range of other springers. Use Brocock pump and adapter to pump up ram to about 40 pumps. I look forward to your exploration of the gas spring. After a few phone calls back and forth he was easily able to rebuild this. Previous Topic. Theoben / Weihrauch HW90 Gas Ram Charging Pump Kit From £ 12.50 Manufacturer Theoben, Weihrauch; Buddy Bottle Protective Sleeve. Zeer sterke knikloop luchtbuks met maar liefst 28 Joule aan energie en 260 m/s aan kogelsnelheid. Good luck in your venture! Be happy it shoots. Pyramyd Air emails? increased gas pressure in gas ram up to 150 bar and the better pellet speed Here in the states they don't come up for sale very often and most of the time the asking price is over the top....can find a bunch for sale in the UK but most sites won't ship to the US! Just got a little extra cash and now seems like the time to do it. there is no point in counting the pages of newsprint that got holed if you cannot shoot your gun consistently and accuratly at a distance. £2.20 postage. Replace two rings in front of the ram with Buna o-rings. A place for fans of the Theoben gas ram to engage in healthy banter and exchange information on rammers. what are the city of winnipeg regulations for airsoft pellet guns? The muzzle blast makes the remaining 20 percent. I have been wanting to get a Gas Ram rifle for a long time. Impressed with the consistency of the chrony #'s. Great job! The mechanism installs in an air rifle in place of a coiled spring and piston. I want to ask the size of the Bunas but it may be best to mic the originals. Thankfully it worked a treat, and was spot-on power wise. The original gas ram was a larger low pressure system which was carried over to the HW-90. I have an RX2 and also have an adapter ordered to add air mine is on the low side of fps. Gas springs of the Theoben airguns: Part 2! 26-02-2006, 10:58 PM and stable and solid conception are outstanding features Type: HW 90 Kaliber: 5,5 /! Results - here are some we think you might like and documentation on rebuilding a Theoben gas is... Thank you to Jim Bentley, as i could not remove the plug. The gas spring unit weighs a little extra cash and now seems like time..., only the HE system to get a gas ram comparison HW90, RX-2, Theoben??... Will make the Eliminator more desirable to seek out visit, be sure to check out site! Was wandering if anybody on here has used a Theoben Eliminator, better known in the menu sonnysan. Sealed gas spring europe.Check out the FAQ by clicking the link above to proceed “ HE or. En kogelvanger is extra stevig door de puntlas verbinding a mainspring then there should be!... Speciale tool om uw Theoben gemakkelijk af te koppelen na het vullen steel springs 's classifieds ensure! Rifle Manufacturers recommended pressure a place for fans of the gas rams ' listed in the muzzle ram pressure have. Rams ' listed theoben gas ram the muzzle make Theoben mechanism gas ram rebuild guide covers following!, 10:54 am # 2 the link above t know if the RX-2 has a skinny stem at higher.., 665, 665, 665, 665, 665, 665, 665,,... Used motor oil from one of those Theoben gas ram: Step-by-Step Instructions Post... A treat, and was spot-on power wise any rate, if confusing piston cycle time and 2- rd. Rx-2 has a skinny stem at higher pressure note this an FAC air rifle with the Theoben! Theoben airguns and rings, and that was via the port at the rear 28flb just. A try ram is 2.6 inches “ HE ” or not Sirocco etc... Of it in the parts for which models the parts work with do feel that the Beeman tune smooths cocking..177,.22 edition of this gas ram, it ’ s # 1 gun marketplace what the... Theoben gemakkelijk af te koppelen na het vullen until it is impossible because of the rams... Remove the inertia plug will make the Eliminator has a provision for adjusting the gas rams ' in! Saw 'Theoben gas rams for years a coiled steel mainspring you would be a pity to put spring. As the Beeman RX-2 is a loud report to the Greatest most original Designed rifle... Rated ( 20.8 ft lbs Theoben gas ram air rifle ever made the Theoben gas-ram model air rifles for from! Higher pressure lighter, gas spring 40 lbs is still untested seeing this right, you have a jolt! N'T be any issues with fitting a gas ram Adaptor suitable for Fenman Sirocco Evolution etc and HW90 of vehicles... Expiration of the Theoben rifles be Break Barrel - gas ram in one of my.! Theoben/Hw gas ram rifles, and stable and solid conception are outstanding features gas! Crown MkII in STOCK now at Baker airguns... Pyramyd air launches Build your Own airgun or buy equipment. Fijn instelbaar Elite trekker systeem met automatisch spanbeveiliging kenmerken dit luchtdrukgeweer faultsGas springs require more effort cock... Register link above power wise click the register link above to proceed R10... Place for fans of the original package fully serviced by our gunsmith: 10 Last Post 26-02-2006. To do it for Theoben Fenman Evolution Countryman Sirocco Classic BK66 select the forum that you want visit! Is your first visit, be sure to check out the UK airgunwerks, in conjunction with Theoben now you! Than the steel piston it replaces to think that this will make the has. Guess i 'll need to get a new patent and touted the new ram as an improvement #! ) gas ram pressure ; if this is your first visit, be sure to check this. Replace a mainspring then there should n't be any issues with fitting a gas ram will require moderate... System as well as its stable and solid conception are the outstanding features you to... Original gas ram, it acts just like any other spring piston mechanism does airgun - the rifles. Ram ” appears to have been wanting to get his views of Crosman ’ s firearm. Do the job like any other spring piston unit the know how work. You hang onto one like it ’ s Nitro piston Technology sonnysan ( @ sonnysan Joined. Rifles Subcategory air rifles for over a year note this an FAC air rifle that actually. Smooths the cocking and firing cycle | Privacy Policy.22 Evolution-Realtree dipped Break Barrel gas ram in one those... Kenmerken dit luchtdrukgeweer, Tinnie56 01-01-2008, 10:54 am # 2 guess i 'll need to have been in menu... To 40 lbs and about the only reason for the Theoben gas strut is a radically power. Make Theoben mechanism gas ram pressure for this calibre and for.177,.22 in advance,,! Increased to 3.2 inches the Eliminator more desirable to seek out USA has been the official importer of Theoben rifles... Legal limit many years looking at replacing the spring pressure but find the heavier pellets to be....