September 22nd 2021. In this article, we will show you how to build a barrel cooler that costs less than $15. This system uses a high speed inflator fan from Amazon and a piece of temperature-stable tubing. F-Class John, a forum member and popular YouTube host, devised the system. It cools his barrels in half the time as other products. The system can also be used as an Empty Chamber Indicator. Barrel coolers have an important function: they reduce barrel operating temperatures. This can help preserve barrel life and maintain accuracy in competition. Additionally, barrels that are kept cool can help reduce chamber pressure, which is a serious safety concern. There are a variety of commercially-available barrel cooling systems. External fans and internal slip-in systems are available that can double as an Empty Chamber Indicator. Magnetospeeed offers the original yellow BarrelCool for $39.99 and the red RifleKuhl for $59.99. Both are excellent products. F-Class John created a better system, one that you can build for a fraction the cost of traditional yellow or red fans. You can build your own barrel cooler for as low as $15
It is simple to assemble. Amazon offers a $10.99 YIVAR pump. This pump is small and powerful enough to inflate air mattresses. Next, get high-temp tubing from your local supply shop. Next, remove an old piece of brass from the case-head. Fit the tube into the case by tiling the ends. NOTE: The fitted case can be used if you prefer. The case will fit snugly in your chamber. The system works well with the tubing alone. The Yivar pump system blows air at 10+ MPH out of the muzzle in his.284 Win barrel. F-Class John claims that this pump system blows air at three times the speed of other systems. Yivar pumps can be used for 15 minutes after each string in a match. They are able to hold about 45 minutes of charge. It can then be recharged using a USB-compatible battery pack. John noted that the fan blows at the same speed throughout the 45-minute charge period. This system has the following key benefits: This system provides faster cooling
2. 2.
3. Longer run time on battery
4. Rechargeable USB fan battery
5. John finally found a use for the brass John confirmed that his barrel cooler was effective by sticking a temperature tape on the barrel. His fan system was able to cool the barrel in half the time of commercial fan systems. His run time was also excellent and the Yivar’s Lithium-Ion battery, which is built into the Yivar, can be fully charged so he doesn’t have to buy expensive batteries. What are the disadvantages? There are not many. The fan is quite noisy. You can hear it in the video at the 4:04-4:28 mark. F-Class John points out that the Yivar fan is approximately 4 decibels (dBs) quieter than a Magnetospeed RifleKuhl so the Yivar’s noise level is not too bad. These are comments from YouTube viewers who love F-Class John’s invention: Finally, something affordable! It’s small and can be charged at the range. This gadget is not the only one I can use, but it’s all I need. A poor pensioner like me can afford it! Thank you for the tip. This is a brilliant idea! This was the first thing I saw and I immediately bought one. I have been considering getting a cooler for when I test my loads. Thank you! Amazing… Brilliant… Brilliant! It is amazing! I have deferred buying a barrel cooler for years because I wanted to spend my toy funds on other things. It is so cheap to build one, there is no reason to wait. Fan with plain hose also works well (no brass case cutting/fitting required).
F-Class John enjoys the custom fit achieved by inserting the hose into a piece modified brass. He also notes that the system works well with any brass, i.e. He uses a fan and a hose to power the fan. This may work better if you have a smaller chamber. Just attach the hose to the fan, and trim/taper the forward end of the hose to fit. F-Class John says: “The motor and heavy duty tubing work fine without a brass case. The hose can be placed in the chamber by itself. You will need to place the hose on the tube end. Many people find that using the tube (without brass), is the easiest option.
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