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Smart Parts LPR From the Web site:
While the Smart Parts web site might not be saying a lot about this little LPR, the rest of the paintball world is! How does it work? The design is very similar to the Max-Flo regulator, which is often when many people call the Smart Parts LPR, the mini Max-Flo LPR. Unlike the Max-flo regulator, the Smart Parts LPR is not pressure compensating. Air enters the base of the LPR from the Valve cap, as I have it installed, or from the Vertical Adapter, as others sometimes have it installed. The air pressure pushes against the Poppet which seals the air from passing through the LPR. The Poppet spring is there to keep the LPR closed when there is no air in the marker, similar to how the Valve spring's sole purpose is to keep the valve closed when the marker is not aired up. As the LPR Cap is tightened, the LPR spring pushes on the Piston. The piston is attached to the Poppet, so it forces the poppet open. This allows a small amount of air to pass between the poppet and the seat. This air exits the LPR through the micoline.
Does such a small LPR work well? Simply put, YES. The actual LPR contains a very small volume of low pressure air. However the air passage down the side of the Impulse contains a much larger volume of air. While not by it's initial design, the Impulse's design is perfect for such a small LPR. As a matter of fact, several custom impulses like the new Strange and the Game Face Impulse have LPR's built into the valve cap that have practically no volume of stored low pressure air. Once my Impulse was setup correctly with the LPR, I have been able to easily shoot 10 pods and a hopper during a 10-man game on a good 4000psi fill. That works out to be over 3/4 of a case of paint. How do you know if your LPR is working correctly? When the LPR cap is backed out the LPR should not allow any air to pass through. A simple test is to air up your Impulse, take a couple shots (dry fire) to make sure it's working normally. Then unscrew the LPR Cap. You can actually unscrew the cap completely and remove it if needed (don't forget to grab the LPR spring). Then fire your Impulse. It will likely cycle another couple times but once the low pressure air feeding the solenoid is used up, it should not cycle any more. If your Impulse continues to cycle or after sitting a couple minutes it will cycle, then your LPR is leaking. Sometimes a good clean and lube can fix a leaking LPR. I perform the test identified above periodically to make sure my LPR is functioning correctly. Another test is to install a gauge on the back of your Impulse. With this gauge you can compare the operating pressure of the Impulse to the LPR pressure. This can also help identify any LPR related shootdown issues. What can you do if your LPR is not working correctly and you do not have time to fix it? When the LPR cap is screwed in all the way, the LPR is wide open. Essentially when this happens it's like the LPR is not even there. This will allow you to adjust your velocity by the Operating pressure. Recently I was at a tournament and found that my LPR was leaking internally, so it was not working. Since I did not have time to fix it, I just screwed the LPR cap in all the way and lowered my operating pressure. I had a great day of paintball and was later able to clean the LPR and get it back into working order.
What pressure should you set your LPR to? Like all Impulse setup questions, this one really depends on the operating pressure, any upgrades and the dwell setting. The key when installing an LPR is to set it up so it works best on YOUR Impulse. There is no such thing as perfect or common settings. For a good starting point, go to the Technical FAQ #24 How do I Adjust my LPR? Do you need a gauge to measure the LPR pressure? In my opinion, no. Once you have "dialed in" your Operating pressure and Dwell, you will use the LPR to adjust your velocity. The exact pressure of the LPR is just a reference number and once you get comfortable with your LPR you will not need a gauge.
Installation: This all depends on the location you are mounting the LPR. Mine is installed on the valve cap so that is how I am writing the instructions. You can buy the Smart Parts LPR as an LPR, you will also have to purchase all the other parts needed or you can purchase an LPR kit, which includes a new Valve cap, the LPR Tapeworm and some microline.Before you begin, you will need a couple things:
For those that did not buy a kit you will also need:
The Details
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