First shot drop

[Nimrod]

Mal wieder was neues um das alte "First shot drop" Problem zu beheben......

Performance Concepts Quicksilver Ram

What does the Quicksilver Ram Shaft do?


-Eliminates First shot drop
-Quicker, faster, more responsive ram operation
-Provides maximum air flow in and out of the Ram body
-Faster ram cycling times
-Lower ram operating pressure


After Installing the ram shaft in a impulse with bad first shot low problems (meaning the first ball would not clear the barrel) I noticed a huge increase on the first shot it would still be low but no where near as bad as before. When I say low I mean low by only 20fps for example first shot was 263 fps the following shots were:

289
291
287
287
288

I then let the gun sit for 5 minutes and shot:
282
290
289
288
290

I do not know of anyone playing a game of paintball that would let the marker sit for longer than 5 minutes before taking a shot. So to say this would cure the problem i'd say is 100% correct.

Know for the second part: -Quicker, faster, more responsive ram operation
I do not have a meter to count BPS but from my experience I would definetly say the impulse did indeed shoot/cycle faster with the QS Ram. Not only did I notice it but everyone inside of my store did as well.

Provides maximum air flow in and out of the Ram body
After talking to Kris from www.performanceconceptspb.com I do appreicate the work and effort that went into the design and precision milling that took place to manufactor these. At first look to the eye you do not see a huge difference in these rams compared to stock rams. Everything that the QS Ram does to help is centered around the head of the ram.



All of the design was aided by computer for Kris before hand, he knew what he wanted to do the trick was to get the air to flow around and with the ram the way he wanted.

Lower ram operating pressure

While all of our guns run LPR setup's I do find his to be true. After installing the QS Ram we found a veolcity increase of around 15 FPS after turning our LPRs down we were right back on track to where we normally shoot.

To sum it all up:
To me the is the QS Ram shaft worth the $39.99? Yes most definetly to know you are going to tremendously help if not cure the FSDO makes it worth that in itself. Not to mention all of the other benifits you are getting for free after installing it. Quicker, faster, more responsive ram operation Provides maximum air flow in and out of the Ram body Faster ram cycling times Lower ram operating pressure

http://www.impulseownersgroup.com/reviews/qsram.jpg

[terrorizer666]

Meine Shocker hat das auch manchmal, is das nur n Timingding bei der Shocker ??

Ansonsten Danke für die Info Nimrod auch wenn ich nix damit anfangen kann ;)

[Banzai]

quatsch ! das ding bringt fürn first shoot drop off nix ! drück mal vor dem ersten schuss am boltpin den bolt etwas nach vorne, damit sich der hammer löst. sollte es wirklich am "sticky hammer" liegen müsste der erste schuss dann normal sein. ist aber nicht ! lies mal den kommentar von jack wood auf der impulse owners group. liegt am solenoid.

übrigens: als ich meine impe letzten sonntag in holland mit 160 psi auf 300 fps laufen hatte war das first shoot problem plötzlich weg ! nix ! nicht mal ne schwankung !

banz

[Nimrod]

Stimmt......habe ich vor geraumer Zeit mal gelesen.....


Hier noch mal die Lösung von J.Wood


Guides

Just wanted to give some input to the low first shot problem that a load of members seem to suffer from. After having no evidence of the problem on any one of my team guns for the last few months, this weekend we had 4 out of the 6 guns used in training develope the problem. Now I know there are a million different cures that fly around this forum, including cleaning lube off the back of the hammer, use a 009 o-ring on the ram, etc, etc. Now I build and maintain all the Banzais team guns (as player on Banzais and worker at Planet Eclipse, it makes sense!!!!!) and I obviously know the history of every single gun on the team. So during training I did a couple of experiments to isolate the problem down to one specific area or component. I felt it had to be one specific problem for all the guns to develop identical symptoms, simultaniously. The final test that gave me the conclusive evidence of the culprit (sounds like a who-dunit!!) was this:-
Chrono the gun with several shots, and note the highest and lowest shots. Now let the gun sit. Let it sit for the period of time that you know usually causes a low first shot. For some that may be a minute, for others it may be 5. Now you can switch the gun on and off if you want, but it is better to leave it gassed, obvioulsy. Now, after that period, push on the back of the bolt, or the bolt pin, just far enough that it breaks any contact with the ram and bolt in the rear position, and then let it spring back into the rear, cocked, position. You don't want to push it all the way forward, or you will push a ball into the barrel, and another will fall in behind it when you let it go. Not Good! What you are doing here is breaking the "stiction" of the bolt, hammer, and ram system, and "simulated" a fired shot in those components. If you now fire the gun, straight after pushing the bolt, you will find one of two things. Either the next shot will be at full velocity, or not. If not, it will be lower than the lowest shot in the string before you let the gun sit. If you find that that shot was full velocity, it means you have a sticky bolt, hammer or ram. Clean them all and re-lube, and I always prefere Airlube to Dow33, but that's just me (less sticky).

However, if that shot is still low, like every one of my team guns was, then it is stickyness in the solenoid that is causing the low shot. After further testing it was definately the solenoid that was causing the first shot low problem in every gun we tried. I took out the solenoid, cleaned the spool of ALL grease, cleaned the pilot ports in the middle section of the solenoid with strands of wire and wiped clean the plunger and spring. I then LIGHTLY greased the spool with Dow33 and re-assembled the solenoid and gun. After doing this to every gun, the problem was completely irradicated. We left all the guns for up to an hour and saw not even 5 foot drop in velocity for the first shot. For your interest we have a complete mix of stainless, delrin, titanium and aluminium hammers, bolts and shafts, and a mixture of LPR set-up guns and regular run Impulses. The problem and the cure was universal. No set-up seemed any more susceptable than any other.

So, I hope you all understand what I am saying.

Many thanks

Jack Wood