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Air Gun Home Forum Index » General Air Gun Questions and Topics » Every springer owner can use one of these...    View previous topic :: View next topic  Every springer owner can use one of these...   Posted: Fri Jan 11, 2008 11:00 am Westonhill Member Joined: 09 Nov 2007 Posts: 71 Location: San Diego, CA, USA Tim Johnston's Mainspring Compressor He's making it for sale at $60 + S&H.   Posted: Fri Jan 11, 2008 11:30 am broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands You can also make them yourself, or ask a handy friend to make one for you... _________________ BIG GAP   Posted: Fri Jan 11, 2008 3:14 pm Alstone Moderator & Site Supporter Joined: 01 Mar 2007 Posts: 4139 Location: Linconshire, ENGLAND I personally think that any spring compressor that relies on an angle bracket of that length, to hold a spring in compression is very bad design. All spring compressors should be supported on at least two sides if possible, also the length of the base, which looks like a piece of shelf bracket needs to be bolted down to a length of wood to stop it flexing. And as for a bit of Velcro to hold the receiver in place makes the whole unit a bit iffy. If he wants to make it for himself that’s alright, but if I was him I wouldn’t sell them. Al _________________   Posted: Fri Jan 11, 2008 3:40 pm 22magnum Member Joined: 21 Dec 2007 Posts: 38 I am somewhat surpised others need such robust spring compressors..I took my Phantom 500 apart and these was almost zero sping preload. Are other guns pre-loaded much more? That must be hard on the spring to be under compression all the time..I would think its best to have much pre-loading of the spring (just enough to prevent twanging)   Posted: Fri Jan 11, 2008 4:05 pm AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6908 Location: "Out There" Interesting. I would agree with Alstone- Velcro holding things down doesn't inspire alot of confidence. As for guns needing a spring compressor- some really do have an huge amount of spring preload, especially some that have been modified. Many guns also don't need a compressor due to very little pre-load. I suspect this spring compressor would work well in an application involving little preload and for someone who doesn't have a helper or an 8' hand span to do it alone. _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront   Posted: Fri Jan 11, 2008 6:37 pm broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands 22magnum wrote: I am somewhat surpised others need such robust spring compressors..I took my Phantom 500 apart and these was almost zero sping preload. Are other guns pre-loaded much more? That must be hard on the spring to be under compression all the time..I would think its best to have much pre-loading of the spring (just enough to prevent twanging) In most powerfull springers you'll find that the spring is bend a bit. Some bad quality springers also get that, even when they are under none to no preload. However, most springs in tuning-kits, in combination with spring-guides seem to last a lot longer, and sometimes lessen the pre-load. There are kits that insert a smaller spring, but that increase the power output of the gun. For instance, a HW97K of which I had the honour of shooting a couple of times. Twang can partly be caused by a spring that is preloaded and bend. _________________ BIG GAP I have one.   Posted: Fri Jan 11, 2008 6:50 pm Westonhill Member Joined: 09 Nov 2007 Posts: 71 Location: San Diego, CA, USA broommaster2000 wrote: You can also make them yourself, or ask a handy friend to make one for you... I have the B-Square Mainspring Compressor. I was thinking for the time and all the tools I needed, I might as well just go buy it, which cost me as much as a Chicom rifle :-)   Posted: Fri Jan 11, 2008 7:04 pm Westonhill Member Joined: 09 Nov 2007 Posts: 71 Location: San Diego, CA, USA AirGunEric wrote: ... As for guns needing a spring compressor- some really do have an huge amount of spring preload, especially some that have been modified. Many guns also don't need a compressor due to very little pre-load. I suspect this spring compressor would work well in an application involving little preload and for someone who doesn't have a helper or an 8' hand span to do it alone. My Tx is far more powerful than my R7. Yet, the Tx doesn't have much preload while the R7 has a lot. The spring on the R7 is not hard to compress by hand, but like what you said, if you are the only one who's working on the gun, a spring compressor helps tremendously.   Posted: Fri Jan 11, 2008 7:54 pm broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands Westonhill wrote: AirGunEric wrote: ... As for guns needing a spring compressor- some really do have an huge amount of spring preload, especially some that have been modified. Many guns also don't need a compressor due to very little pre-load. I suspect this spring compressor would work well in an application involving little preload and for someone who doesn't have a helper or an 8' hand span to do it alone. My Tx is far more powerful than my R7. Yet, the Tx doesn't have much preload while the R7 has a lot. The spring on the R7 is not hard to compress by hand, but like what you said, if you are the only one who's working on the gun, a spring compressor helps tremendously. I know, the R7/HW30 is a pretty good gun, but not the way it's putten together. An HW97K is much easyer to work on. Really two incomparable rifles. _________________ BIG GAP   Posted: Fri Jan 11, 2008 8:57 pm Westonhill Member Joined: 09 Nov 2007 Posts: 71 Location: San Diego, CA, USA broommaster2000 wrote: Westonhill wrote: AirGunEric wrote: ... As for guns needing a spring compressor- some really do have an huge amount of spring preload, especially some that have been modified. Many guns also don't need a compressor due to very little pre-load. I suspect this spring compressor would work well in an application involving little preload and for someone who doesn't have a helper or an 8' hand span to do it alone. My Tx is far more powerful than my R7. Yet, the Tx doesn't have much preload while the R7 has a lot. The spring on the R7 is not hard to compress by hand, but like what you said, if you are the only one who's working on the gun, a spring compressor helps tremendously. I know, the R7/HW30 is a pretty good gun, but not the way it's putten together. An HW97K is much easyer to work on. Really two incomparable rifles. Yeap! Tx is a much better design.   Posted: Sat Jan 12, 2008 1:43 am Mar Veteran Member Joined: 21 Sep 2007 Posts: 428 Location: Victoria, BC This guy does have some good ideas which I will probably borrow to improve my compressor.   Posted: Sat Jan 12, 2008 5:56 am Alstone Moderator & Site Supporter Joined: 01 Mar 2007 Posts: 4139 Location: Linconshire, ENGLAND The guy does have some good ideas, but his engineering is a bit suspect. One other thing I noticed about the compressor is that he is using it on a break barrel rifle, it would be a lot safer to remove the barrel before compressing the spring, all it wants is for the barrel to break when he has a load on the spring, and you have a dangerous situation, also a shorter unit would be more stable. I know that a lot of airguns have very little preload on there springs, but when you get to Chinese rifles they make up for the lack of spring technology by fitting a longer spring at higher compression, and if you are selling something like this to the general public, it should be suitable for everything it is likely to encounter. Al _________________   Posted: Sat Jan 12, 2008 9:14 am broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands I've read a Weihrauch 85 Spring will fit nicely into a B36-2. Include some spring-guides and you'll have an even nicer and more reliable springer. _________________ BIG GAP Every springer owner can use one of these...     Air Gun Home Forum Index » General Air Gun Questions and Topics 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 1   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." 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