Main Spring
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 Colt Model 1903 Pocket Hammerless Main Spring ORIGINAL Part $8.50 (1 Bid) Time Remaining: 8h 48m |
 BERETTA FACTORY METAL MAINSPRING HOUSING 92FS 96 M9 NEW $14.99 Time Remaining: 3d 38m Buy It Now for only: $14.99 |
 1911 Colt Mainspring Housing MagWell BlackChain Link $54.95 Time Remaining: 28d 22h 33m Buy It Now for only: $54.95 |
 Black Powder Traditions CVA Juker Main Spring New $11.86 Time Remaining: 10h 15m Buy It Now for only: $11.86 |
 Smith Wesson N Frame 1917 MAIN REBOUND springs 3 pcs $3.00 (1 Bid) Time Remaining: 1d 2h 17m |
 1911 ARCHED SERRATED MAINSPRING HOUSING BLUED STEEL PART 4548AB $19.99 Time Remaining: 10d 2h 14m Buy It Now for only: $19.99 |
 1911 FLAT CHECKERED MAINSPRING HOUSING BLUED STEEL PART 4547FB $19.99 Time Remaining: 10d 6h 58m Buy It Now for only: $19.99 |
 Ed Brown 1911 Mainspring Housing MSH SS in Chainlink design $30.00 Time Remaining: 1d 16h 5m Buy It Now for only: $42.00 |
 HR Model 949 Mainspring Assembly New $38.95 Time Remaining: 26d 10h 13m Buy It Now for only: $38.95 |
 M1911 A1 MAIN SPRING w DETENT CAP 45 ACP PISTOL Auto pistol part lot $10.70 Time Remaining: 5d 18h 55m Buy It Now for only: $10.70 |
 Ed Brown 1911 Mainspring MSH for OFFICER size 25LPI $20.00 Time Remaining: 1d 16h 11m Buy It Now for only: $25.00 |
 1911 Colt Mainspring Housing Stainless Chain link back $29.95 Time Remaining: 26d 20h 5m Buy It Now for only: $29.95 |
 HR Model 900 Mainspring Assembly New $38.95 Time Remaining: 2d 23h 54m Buy It Now for only: $38.95 |
 1911 ARCHED SERRATED MAINSPRING HOUSING STAINLESS STEEL PART 4548AS $18.99 Time Remaining: 10d 9h 45m Buy It Now for only: $18.99 |
 Vintage USGI Colt 1911 1911A1 45 Pistol Smooth Mainspring Housing Lanyard $15.50 (3 Bids) Time Remaining: 1d 23h 31m |
 1911 FLAT CHECKERED MAINSPRING HOUSING STAINLESS 4547FS $21.99 Time Remaining: 11d 5h 15m Buy It Now for only: $21.99 |
 HR Model 930 Mainspring Assembly New $38.95 Time Remaining: 3d 14m Buy It Now for only: $38.95 |
 WWI Colt 1911 Mainspring Housing and Pin RARE $24.50 (3 Bids) Time Remaining: 2d 38m |
 1911 FLAT SMOOTH MAINSPRING HOUSING WITH LANYARD LOOP PART 4586 $17.99 Time Remaining: 22d 19h 48m Buy It Now for only: $17.99 |
 SW Smith and Wesson Pistol K L N Models Mainspring Main Spring Gunsmithing $6.95 Time Remaining: 8d 5h 35m Buy It Now for only: $6.95 |
 Winchester 1892 Vintage Main Spring Great Shape Like 1873 1886 1894 $13.00 (4 Bids) Time Remaining: 2d 8h 40m |
 Original WWII USGI Colt 1911A1 Mainspring IN COSMOLINE WRAPPER P 1044 $4.99 Time Remaining: 25d 4h 33m Buy It Now for only: $4.99 |
 WILSON MAINSPRING HOUSING FLAT STAINLESS 1911 Full Size 92SF $51.99 Time Remaining: 26d 21h 49m Buy It Now for only: $51.99 |
 Black Powder CVA Juker Ultra HI Mainspring ONLY $8.03 Time Remaining: 15d 10h 30m Buy It Now for only: $8.03 |
 WW2 1911A1 45 CALIBER PISTOL COLT REMINGTON MAIN SPRING HOUSING FLAT $15.00 (3 Bids) Time Remaining: 2d 15h 5m |
 1911 ARCHED CHECKERED MAINSPRING HOUSING STAINLESS SS PART 4547AS $19.99 Time Remaining: 17d 20h 4m Buy It Now for only: $19.99 |
 1911 45 MAINSPRING HOUSING PIN STAINLESS STEEL PART 4522S $1.99 Time Remaining: 10d 6h 59m Buy It Now for only: $1.99 |
 RARE 1911 Pachmayr mainspring housing COLT STYLE 1911 W RETAINING PIN no reserve $76.00 (11 Bids) Time Remaining: 2d 21h 31m |
 Original WWII USGI Colt 1911A1 Mainspring Cap P 1043 $3.99 Time Remaining: 19d 4h 20m Buy It Now for only: $3.99 |
 1911 45 MAINSPRING Part 4526 $1.99 Time Remaining: 27d 23h 3m Buy It Now for only: $1.99 |
 SPRINGFIELD ARMORY 1911 ILS CHECKERED MAINSPRING HOUSING BLUE $45.00 Time Remaining: 3d 6h 57m Buy It Now for only: $50.00 |
 Winchester Model 1897 Shotgun Mainspring P 1076 $11.99 Time Remaining: 26d 3h 31m Buy It Now for only: $11.99 |
 Air Arms Main Spring For S300 S310 S400 S410 S510 EXPORT FAC Rated $27.49 Time Remaining: 6d 16h 22m Buy It Now for only: $27.49 |
 1911 45 MAINSPRING CAP PIN BLUED STEEL MODEL 4525B $1.99 Time Remaining: 8d 1h 21m Buy It Now for only: $1.99 |
 1911 CHECKERED MAINSPRING HOUSING WITH MAGWELL AND RECOIL SHOCK BUFFER FREE SHIP $55.00 Time Remaining: 3d 7h 25m Buy It Now for only: $61.00 |
 1911 COLT Mainspring Housing Lt Alloy BK GOV Checkered $29.95 Time Remaining: 28d 9h 20m Buy It Now for only: $29.95 |
 1911 MAIN SPRING HOUSING KIT RUSTPROOF FITS MOST FULL SIZE 45 RETURN POLICY $14.30 Time Remaining: 4d 11h 57m Buy It Now for only: $14.30 |
 NEW SIG 226 228 HAMMER STRUT AND MAINSPRING SEAT $15.00 Time Remaining: 3d 7h 25m Buy It Now for only: $17.00 |
 1911 FLAT SERRATED MAINSPRING HOUSING STAINLESS STEEL PART 4548FS $18.99 Time Remaining: 8d 22h 22m Buy It Now for only: $18.99 |
 AMT 380 CALBACK UP MAIN SPRING ROD FACTORY $19.95 Time Remaining: 29d 5h 1m Buy It Now for only: $19.95 |
 1911 PINS for barrel link hammer sear hammer strut mainspring keeper $10.00 Time Remaining: 4d 1h 38m |
 JENNING J 22 MAIN RECOIL SPRING PART 16 $13.42 Time Remaining: 29d 7h 38m Buy It Now for only: $13.42 |
 AMT 380 CAL ARCHED MAIN SPRING HOUSING STAINLES STEEL $26.43 Time Remaining: 29d 5h 1m Buy It Now for only: $26.43 |
 1911 FLAT SERRATED MAINSPRING HOUSING BLUED STEEL PART 4548FB $18.99 Time Remaining: 10d 9h 51m Buy It Now for only: $18.99 |
 ORIGINAL WINCHESTER 1873 MAINSPRING $15.00 (1 Bid) Time Remaining: 4d 8h 54m |
 COLT FACTORY NEW 1911 1991 FULL SIZE TRIGGER MAINSPRING HOUSING PARTS $15.00 Time Remaining: 24d 9h 40m Buy It Now for only: $15.00 |
 1911 45 MAINSPRING HOUSING PIN RETAINER STAINLESS STEEL PART 4523S $1.99 Time Remaining: 24d 23h 55m Buy It Now for only: $1.99 |
 Vintage WW2 era 1911a1 Union Switch Signal mainspring housing $140.00 Time Remaining: 5d 8h 29m Buy It Now for only: $200.00 |
 1911 COLT Mainspring Housing Lt Alloy SS GOV Checkered $29.95 Time Remaining: 29d 21h 9m Buy It Now for only: $29.95 |
 Original Winchester 1873 73 Mainspring Screw $12.95 Time Remaining: 4d 1h 24m Buy It Now for only: $12.95 |
 ARCHED MAINSPRING HOUSING 7 RIBS w LANYARD USGI COLT 1911A1 WWII Black Finish $31.03 (3 Bids) Time Remaining: 5d 9h 9m |
 Smith Wesson MPKLN Frame Mainspring P 1053 $8.99 Time Remaining: 19d 6h 18m Buy It Now for only: $8.99 |
 1911 45 MAINSPRING CAP STAINLESS STEEL PART 4524S $1.99 Time Remaining: 18d 22h 50m Buy It Now for only: $1.99 |
 1911 Colt Mainspring Housing MagWell BlackPlain $46.95 Time Remaining: 13d 20h 7m Buy It Now for only: $46.95 |
 Model 1911 Main Spring Housing $1.00 Time Remaining: 5d 9h 23m |
 WWII Colt 1911A1 Mainspring Housing Pin P 1038 $2.99 Time Remaining: 17d 6h 38m Buy It Now for only: $2.99 |
 1911 45 MAINSPRING CAP PIN MATTE STAINLESS STEEL PART 4525S $1.99 Time Remaining: 10d 6h 57m Buy It Now for only: $1.99 |
 Colt Single Action Mainspring screw post $2.99 Time Remaining: 5d 10h 55m |
 Colt Pocket 25 Hammerless Replacement Mainspring Guide $7.45 Time Remaining: 14d 4h 41m Buy It Now for only: $7.45 |
 1911 ARCHED CHECKERED MAINSPRING HOUSING BLUED STEEL PART 4547AB $19.99 Time Remaining: 13d 5h 45m Buy It Now for only: $19.99 |
 black powder muzzleloader flintlock part lock cock main spring frizzen flint lot $20.00 Time Remaining: 5d 23h 28m Buy It Now for only: $25.00 |
 Beretta Model 92 M 9 Mainspring $1.95 Time Remaining: 9d 3h 13m Buy It Now for only: $1.95 |
 M1895 Nagant Revolver Part Main Spring 33 $20.00 Time Remaining: 17d 2h 13m Buy It Now for only: $20.00 |
 1911 Colt Mainspring Housing MagWell SS Plain Back $46.95 Time Remaining: 26d 11h 14m Buy It Now for only: $46.95 |
 black powder muzzleloader part lock main spring tumbler bridle percussion lot $0.99 (1 Bid) Time Remaining: 5d 23h 35m |
 M1911 A1 REPLACEMENT SPRING KIT 45 ACP PISTOL Auto pistol recoil main part lot $19.65 Time Remaining: 4d 21h 44m Buy It Now for only: $19.65 |
 Wilson Combat 1911 GOVT Full Size Stainless Checkered Mainspring Housing WC92SF $53.97 Time Remaining: 24d 34m Buy It Now for only: $53.97 |
 Para Ordnance Warthog Pistol Main Spring Assembly Black Fiber New Gun Parts $2.00 Time Remaining: 6d 10h 41m |
 Colt 1911 Smooth Flat GI Mainspring Housing Parkerized $17.99 Time Remaining: 16d 10h 44m Buy It Now for only: $17.99 |
 Sig Sauer P232 Pistol Parts Hammer Strut Magazine Catch Pin Main Spring $20.00 Time Remaining: 27d 9h 6m Buy It Now for only: $20.00 |
 Mainspring For 45 70 Trapdoor Springfield Rifle $13.05 (2 Bids) Time Remaining: 2d 7m |
 1911 45 MAINSPRING HOUSING PIN BLUED STEEL PART 4522B $1.99 Time Remaining: 10d 5h 17m Buy It Now for only: $1.99 |
 1911 45 MAINSPRING HOUSING PIN RETAINER BLUED STEEL PART 4523B $1.99 Time Remaining: 10d 30m Buy It Now for only: $1.99 |
 1911 45 AUTO SMOOTH MAINSPRING HOUSING WW1 STYLE STEEL PART 4587 $17.99 Time Remaining: 10d 21m Buy It Now for only: $17.99 |
 WINCHESTER 67 Model 67 EXTRACTOR Main SPRING Winchester Rifle Part $9.99 (1 Bid) Time Remaining: 3d 5h 36m |
 1911 Colt CARRY CUT Mainspring Housing LT CHK SS $39.95 Time Remaining: 19d 4h 30m Buy It Now for only: $39.95 |
 Wilson Combat 1911 GOVT Full Size Blue Checkered Mainspring Housing Flat WC92BF $51.98 Time Remaining: 18d 8h 19m Buy It Now for only: $51.98 |
 1911 Mainspring Housing parkerized $15.00 Time Remaining: 4d 11h 6m |
 Thompson Center Flintlock Mainspring NEW $11.01 Time Remaining: 5d 12h 43m Buy It Now for only: $11.01 |
 BSA Airsporter mainspring new old stock Air Rifle $15.72 Time Remaining: 14d 4h 5m Buy It Now for only: $15.72 |
 Winchester model 1894 post 64 main spring $8.00 Time Remaining: 4d 12h 9m |
 GI 1911A1 Mainspring Housing Pin Retainer NOS $2.95 Time Remaining: 6d 12h 56m Buy It Now for only: $2.95 |
 Original WWII USGI Colt 1911A1 Mainspring Housing Pin Retainer P 43 $3.99 Time Remaining: 8d 54m Buy It Now for only: $3.99 |
 Smith Wesson K L N Frame Revolver Mainspring $10.15 Time Remaining: 24d 22h 14m Buy It Now for only: $10.15 |
 Vintage Winchester M 97 shot gun Main spring original gun part $0.99 (1 Bid) Time Remaining: 8d 10h 32m |
 1911 45 MAINSPRING CAP BLUED STEEL PART 4524B $1.99 Time Remaining: 3d 1h 25m Buy It Now for only: $1.99 |
 FIE Titan E 27 Mainspring Guide Pin $2.25 Time Remaining: 10d 1h 54m Buy It Now for only: $2.25 |
 Winchester post 1964 model 94 mainspring base $2.99 Time Remaining: 6d 6h 16m |
 M1911 REPLACEMENT MAIN SPRING HOUSING STRAIGHT 45 ACP Auto pistol part $23.55 Time Remaining: 8d 3h Buy It Now for only: $23.55 |
 Browning A 5 Mainspring P 570 $13.99 Time Remaining: 8d 22h 19m Buy It Now for only: $13.99 |
 Winchester post 1964 model 94 mainspring $2.99 Time Remaining: 6d 6h 16m |
 Ruger Black Hawk New Model Mainspring Seat $4.95 Time Remaining: 10d 28m Buy It Now for only: $4.95 |
 HR 865 Rifle Main Spring P 307 $5.99 Time Remaining: 28d 42m Buy It Now for only: $5.99 |
 HR Model 649 Mainspring Assembly New $38.95 Time Remaining: 3d 3m Buy It Now for only: $38.95 |
 REMINGTON MODEL 12 121 TRIGGER MAINSPRING $9.99 Time Remaining: 6d 8h 29m |
 HR Pistol Main Spring Guide Seat Part 934 083 P 231 $2.99 Time Remaining: 22d 32m Buy It Now for only: $2.99 |
 1913 Vintage Ad Ithaca Guns Hammer Coil Main Spring ORIGINAL ADVERTISING $23.95 Time Remaining: 28d 5h 47m Buy It Now for only: $23.95 |
 Titan HW80 MAINSPRING Weirauch $7.78 Time Remaining: 9d 21h 1m |
 Harrington Richardson HR 532 732 733 929 Mainspring and Guide Assembly $31.95 Time Remaining: 21d 23h 36m Buy It Now for only: $31.95 |
 Browning Superposed 20 Gauge MT Main Spring P 693A $8.99 Time Remaining: 16d 21h 45m Buy It Now for only: $8.99 |
Main Spring
Trampoline Springs - Keep Your Trampoline in Good Condition
People from all over the world have enjoyed jumping on trampolines for many years. It has even become so popular that is has been made into a competitive event at the Olympics. Nowadays, trampolines are made of an aluminum framing with a special taut fabric attached to it using trampoline springs. This simple construction helps kids and adults of all ages defy gravity and enjoy bouncing high into the air.
Most trampolines can be separated into two main categories; recreational and competitive. Recreational ones are mainly used by the everyday family in their back yard. These are used for fun and sometimes a little workout. The competitive kinds are usually made to be bouncier, and are portable so they can be easily carried to events and competitions. The main differences between these two types are the quality of the fabric, and the tension of the springs.
The springs of the trampolines are the most important parts. Spring-based trampolines are usually more durable and provide more bounce compared to their elastic band counterparts. The stronger the springs and the more the tension there is the greater bounce you can get with it.
Most trampoline springs are created using a galvanized metal. This type of metal keeps the springs from getting rusty while outdoors. Zinc and steel are the most common metals used to make the springs.
Because the springs of your trampoline are the most important aspects, you should learn when it is a good time to replace them if you want to continue to have the best bouncing and safety. The more times you use your trampoline the more stress is placed on your springs. This causes them to wear out. Even though your springs are made of high quality galvanized wire, they will still stretch and get weak over time. You should always keep an eye on your trampoline and make sure that it is still in good condition before you use it.
To keep your springs working well for longer, cover up your trampoline while it's not being used. This will help protect it from the sun, rain and snow, and keep it from getting rusty. Also, it is worth spraying the springs with some anti-rust products like WD40. If you do not take care of your springs now, they could end up snapping or breaking while someone is jumping away on the trampoline.
About the Author
When the time comes that you do need to replace your trampoline springs, you need to make sure that you get the right kind to fit your specific trampoline. To make sure that you get the right kind, you need to measure the spring from hook to hook and use that measurement to buy the new springs. While it may be tempting to replace them with second hand springs, don't be fooled into compromising safety for the sake of a few dollars.
You can find a lot more information on trampolines at http://www.trampolinespot.com
How do you replace flash upgrade a spring in a Benjamin classic 22 air rifle?
I recently purchased a Benjamin Classic 22 air rifle from Canadian Tire. The main spring broke and i am wondering how to fix it and also possibly upgrade the spring to make it have a higher velocity flash fps? If there is a site that i can order parts off of, like a new spring that will fit into this gun ( with a higher velocity) please tell me. If you can, please include diagrams or pictures or different websites.
Thanks 
Problem is you laws require a PAL if the velocity exceeds 500 fps.
Try this firm.
http://www.dlairgun.com/
Saiga Shotgun and Rifle Reduced Power Main Spring and Recoil Spring Installation