Скачать с ютуб Umarex Fusion 2 conversion kit to High Pressure Air в хорошем качестве

Umarex Fusion 2 conversion kit to High Pressure Air

Update May 17, 2024: After much delay, I spent the past couple days creating a follow up video with details (lots of details!) on the parts and where to find them. Check out the second video here:    • Convert your Umarex Fusion 2 air rifl...   Now, the description: If you are a Umarex Fusion 2 enthusiast who wants to convert from CO2 to High Pressure Air, you are in the right place here! My Back-Story Shortly after my Fusion 2 arrived, I came across a forum post where a guy had strapped a paintball tank onto his Fusion 2 and was using high pressure air instead of the CO2 cartridges. There were a couple photos in the post but no details on the parts used for the conversion. That put me on the hunt for a couple months to figure out the physics involved and the parts required to convert my gun from CO2 to High Pressure Air. CO2 vs. High Pressure Air There are a couple main benefits from converting to high pressure air, or HPA. First is that CO2 cartridges are not required, and at about a dollar per CO2 cartridge, that cost does factor into the consideration here over the long run. Second is that a high pressure air tank can provide a lot more consistently high-velocity shots so you can shoot more without needing to pause your shooting to replace the CO2 cartridges. A down-side of CO2 is that it is affected by temperature. In the cold winter, CO2 doesn’t expand as much so the pressure in the gun is lower, thus affecting the velocity. Velocity Tests I ran some shots over my chronograph last week. I shot Crosman 7.9gr Hollow Point pellets from Walmart (the cheapest ones!). · The first shot was at 638 fps with the first ten shots averaging about 629 fps. · At the end of the third cartridge (27 shots), the fps was down to about 600 fps. · The fourth cartridge finished at 551 fps. · By the end of the sixth cartridge (54 shots), the pellets were firing about four inches below the bullseye from 30 feet. This formed the baseline to compare to the HPA solution. I used the .2 liter tank pumped up to 2,000 pounds per square inch (PSI) and passing through the regulator to the gun at 1,200 PSI. · The first shot came out at 700 fps with the same pellets. · The first ten shots averaged about 688 fps. · The velocity dropped gradually at the end of the fourth cartridge (4x9=36 shots) to about 620fps and I noted the pressure in the tank was down to 1,100 PSI. This indicates that the ballpark pressure from the CO2 cartridges is in the 1,100 PSI range. But the CO2 tube with the two cartridges is smaller than the .2 liter tank, so the pressure will drop faster with each shot. · I continued shooting, down to 980 PSI at the end of the 5th cartridge, · 850 PSI at the end of the 10th cartridge, · 780 PSI at the end of the 7th, · 700 PSI at the end of the 8th, which was 72 shots, · then the shots in the 9th cartridge were shooting about three inches below the aim point at 30 feet. That comparison shows that the HPA power shoots faster and longer than the two CO2 cartridges. Now, consider that the tank can be pumped up to 4,500 PSI. I didn’t pump the tank over 2,000 PSI because I didn’t want to shoot that many pellets at one time! Just ball-parking a projection, the tank dropped from 2,000 to 1,100PSI after taking 36 shots. So if the tank was pumped to 3,000, that should add over 36 more shots. The regulator keeps the pressure constant until it drops below the set pressure on the regulator, which on this regulator is 1,200 PSI. Installing the Tank and Hose First, a word about the setup. This is an off-gun setup that’s designed to be used in a stationary target practice situation. The tank is small enough to be pumped up quickly but is large enough to provide a decent amount of shots per fill. Let’s look at the tank and the hose, backwards into the gun. This tank is a .2 liter aluminum tank that has thick walls and weighs 1 pound, 2 ounces. It’s 6.25 inches tall by itself and 10.5 inches tall with the regulator and on/off valve installed. A regulator screws into the top of the tank. A typical paintball regulator is set to release the air at 800 PSI but most tanks are rated to hold up to 3,000 PSI. This tank’s regulator is set at 1,200 PSI and is not adjustable. The air line is 23 inches in total length. There is a slide-check valve at one end to release the pressure in the line at the end of a shooting session. This tank has a gauge to measure the amount of pressure being pumped into the tank. The twist knob in the valve that's screwed into the top of the regulator is turned clockwise into the valve and pushes a pin into the pin at the top of the regulator to open the air passage out of the tank, through the valve, and into the line attached to the gun.