Demonic Full Flow (DFF)

From the Web site:

Impulse 13* angled and vertical asa adapters with unique milling designed specifically for better air flow.

Pictures taken from www.roughneckpaintball.com

Comments

Isolation modifications come in two different flavors, isolation design and flow restrictor design.   The Isolation design, the good kind, separates the air flow and feeds the valve and solenoid separately.   The flow restrictor design, not as good but better than nothing, does not separate the solenoid from the valve, instead it restrict the valve from "sucking" air away from the solenoid.

It is my opinion that for the greatest performance of your Impulse get an Isolation designed adapter.  

Installation of the Demonic Full Flow is fairly simple.  You will need to have available/purchase the following parts in addition to purchasing the DFF:

• Some loc-tite.  Preferably blue.  Not sure of the cost, I already had some and you should too.
• A handy-dandy set of allen wrenches.  Again, something you should already own, but if not, now is the time to buy!!
• A 10-32 tap (a "plug tap" is best, but you can use any 10-32 tap).  I paid $2.49 at my local hardware store.
• A 10-32 set screw, sometimes called a grub screw.  You can get a small one, either 3/16" or 1/4".  I paid $0.20 each.  I bought two just incase I dropped and lost one.
• A Tap Wrench.  I got an inexpensive T-handle style for $5.79.  There were some that cost more but I did not need that level of tap wrench.

A shortened version of Instructions on Tapping (provided by FOM from www.e-paintballoutlet.com) 

Taping is simply cutting threads.  Often you hear it referred to as "drill and tap". That is because if you start with a piece of metal you want to tap, you fist drill a specific size hole, then run the tap into that hole to cut the threads.

In the case of the Impulse, the hole is already there. The little "locating pin" on the underside of the Impulse (next to the air inlet) is the outside end of the air transfer passage between the valve chamber and the solenoid chamber. In a stock Impulse, the air comes into the valve chamber, then flows through this passage into the solenoid chamber.

1. Remove your current Vertical Adapter, gas-thru grip or macro line fitting.

2. Remove the Valve Cap and spring.

3. Stuff a piece of paper towel down the valve opening to prevent metal shavings from entering the valve area.

Now when you remove the "locating" pin (really just a 10-32 set screw) you are looking right up into the valve chamber through the hole we want to plug. The thing that makes this real easy is that the existing taped hole will act as a guide for the tap to thread the passage we need to plug.

5. On the bottom of the Impulse body, remove the small plug screw located next to the hole from the recently vacated part from step 1.

The process is simple (after you get over the terror of doing it). After you remove the valve cap and put something in the chamber to catch the chips, you simply put some oil on a 10-32 tap and screw it into the "locating pin hole". it will easily screw right through and up into the top of the first (solenoid) chamber. As it enters the untapped transfer passage at the top of the chamber, it will get much harder. now you will have to use a Tap wrench to turn it.

A tap is a very hard but very brittle bit. It can break if you put side pressure on it or put too much twisting force on it. It is very important that you proceed SLOWLY and carefully on the taping step. The recommended way to tap is to turn the tap in about a full turn, stop and back it out 1/4 to 1/2 a turn. Make another turn, back it out 1/4 to 1/2 a turn. What you are doing is taking the pressure off the tap so any chips that might need to can "fall" out of the threads.

To completely tap the hole will require a number of turns (the tap would require 32 turns to move an inch and the passage is about 1/4" long) watch the point of the tap as it makes it way up into the valve chamber.  As you get to the point where the tap "breaks through" to the valve chamber, it will get VERY tight.  NOW IS NOT THE TIME TO TWIST TOO HARD.  You may even find you have to make little "baby turns" back an forth at this point.   When about a 1/4" of the tap is into the valve chamber, you have gone far enough. CAREFULLY back the tap out - if it get hard to turn, try turning it in about a 1/4 turn, then continue to turn it out.  I have seen many a person hurry this part and break a tap when they put side pressure on it while removing the tap from the hole.

6. Remove the piece of paper towel from step 3.

7. Clean and blow out the valve chamber and solenoid chamber.

8. Use the plug 3/16 x 10-32 grub screw to plug the hole connecting the valve chamber to the air passage.  Use some loc-tite to hold the screw in place.

When you screw it in, watch the valve chamber so you don't screw it too far.  You don't want it interfering with the removal of the valve if you ever have to do that.

9. Assemble your Impulse.

Thanks FOM!!!

Pictures of a Demonic Full Flow installed on my test Impulse. Inset picture if of the 13* DFF.

Simply put if you have an old style Impulse body, this upgrade ROCKS!!!  It can make your Impulse felt like a whole new gun without having to complicate things by adding a LPR.  Installing a Demonic Full Flow will make your Impulse feel crisper and quicker.

NOTE: Smart Parts stopped drilling the air transfer hold that connects the solenoid air passage to the valve from under the body.  Because of this change you can NOT use a DFF.  Please make sure you check your Impulse body before ordering one of these parts.

The Details

• Installation: Installation is a little more complicated but can easily be done if you take your time.  If you do not have a 10-32 tap (or access to one) you will not be able to perform this modification.  For those of you that do not have the necessary parts or are uncomfortable with the tapping process, most SP certified dealers can install a Demonic Full Flow for you.
• MSRP: Price is $40.00 for a vertical adapter, $45.00 for a 13* adapter.
• Options: Currently the Demonic Full Flow is available in silver or black shiny finish only.
• Pro's: The Demonic FF is an  Isolation modification that completely separates the solenoid air source from the valve air source.
• Cons: Because Smart Parts changed how they are drilling the air passages in the Impulse not every Impulse can utilize the benefits of this upgrade.