Community Service Project.

[athomas]

Re: Community Service Project.

Q 1) In the Level 10 configuration what is the purpose of the shims?

A 1) - The shims control where in the forward stroke the air chamber starts venting much like the power tube spacers in the original bolt set-up.


Q 2) Explain to me the concept of the carriers and their respective marking system.

A 2) The carrier sits at the base of the power tube and is used to hold the power tube o-ring. Since there are manufacturing variances in the size of the o-rings, we need to compensate for this by using the proper size carrier.

The carriers are marked with a series of grooves and divits. Original carriers have 0,1,2,3 or 4 grooves cut around the outside. The new half sizes will have the same thing except with the addition of 3 small divits around the outside to show that they are half sizes.

Example 0, 0 with divit, 1, 1 with divit, etc.

Q 3) What springs would you use for the respective velocities 230fps, 250fps, 300fps. Explain to me the purpose of the interchangable spring system.

A 3) 230 fps should use a standard bolt spring but may have to be tuned by cutting a coil off a standard bolt spring.

250 fps should use a standard bolt spring

300 fps should use the longest bolt spring supplied with the Level 10 kit.

Each spring setting should be checked and tuned so that the marker will fire slightly below the desired velocity.


Q 4) Explain the role of the dual diameter power piston assembly.

A 4) The amount of force exerted on the bolt is directly related to the area of the hole that it is being forced through. The effective "hole" is the diameter of the power tube. The initial size of the power tube is smaller at the back and the resulting starting force is small. This allows the bolt to move ahead at a slower speed and gently push the paintball forward. Once the smaller diameter power tube passes the power tube o-ring, the chamber pressure is then being held back by the next larger diameter of the bolt piston in the larger section of the power tube. Since the "hole" is larger the force is greater. The result is that the bolt speeds up to quickly chamber the paintball. This helps in maintaining the fast firing rate that the mag is capable of.

Quick explaination: Bolt gently hits the paintball in stage 1 and then quickly accelerates the ball into the barrel in stage 2.


Q 5) You find that you are still able to chop paint with the correct spring. What do you do next?

A 5) You may change to the next smaller carrier (but you may risk bolt stick in some instances) or go to a longer bolt spring and trim it down until it allows your mag to gently fire in your operating range.


Multiple Choice:

Q 1) You find yourself without a powertube spacer what part can be used as a substitute given appropriate modification.

A 1) c - definately needs modification though.

a) A Pencil Eraser
b) A Reg Piston
c) A Rail Bushing
d) Hex nuts from your warp feed or VL elbow.


Q 2) A person at your local field is sportin an Automag RT that his friend decided to "hook up" he is complaining about how his gun is firing 2 shots per trigger pull one on the pull and one on the release he most likely.

A 2) a - would directly cause this problem but could be (b) if the on/off pin is too short causing the on/off to charge the front chamber before the sear is engaged.

a) has an autoresponse frame.
b) needs a new on/off pin.
c) is short stroking.
d) needs a new powertube spacer.

3) You friend just got a new automag from modified paintball last week and he is complaining about shootdown what should he check.

A 3) a - his on/off could be causing the pin to stick. could also be (c) if the ASA on it doesn't depress the pin on his screw in bottle far enough to allow adaquate air flow.

a) his on/off
b) his head for signs of activity
c) his dropforward
d) his bolt

Q 4) You just did a 12 volt mod to your warpfeed and you can't get it to stop spinning what should you do.

A 4) b - lower the sensitivity

a) go to radio shack
b) change the sensitivity on the warp
c) play with the warp jumpers
d) go to burger king and have it your way.

Q 5) The bases Uracil, Thyamine, Guanine, and Cytosene combine to form.

A 5) a - Those crazy DNA

Uracil - DNA Glycosylase
Thyamin - protects the DNA from attack and maintains the fidelity of DNA replication.
Guanine is one of the five main bases found in nucleic acids
Cytosine - a pyrimidine, is one of the major components of DNA. It's a five-carbon sugar, and it connects to the first carbon of the sugar of the DNA strand.

a) DNA
b) Globular Protiens
c) Amino Acids
d) Somthing that looks like the RT spring pack.

Hope I got it right

[Butterfingers]

12:00pm EST deadline tomorrow. The person with all the SA correct and most of the MC answers correct wins.

Nobody has maxed the test yet.

[einhander619]

Lets try this again...

1. The shims control when the chamber vents its air, much like a powertube spacer. The more you add, the earlier it happens. No shims means it won't vent, lots of shims means it vents constantly, aka leaks.

2. The purpose of the carrier system is to ensure the tolerances of the powertube/bolt system are in sync to provide the correct amount of friction to allow the pressure of the two pistons to be differentiated. This is due to the inconsistent nature of urethane o-rings. The Beta system uses normal carriers and "tweeners" to allow for further fine tuning. The carriers are denoted by grooves, with the tweeners having divots. The larger the carrier, the more grooves.

3. The stock spring is good for 230 fps
The standard lvl 10 spring is good for 250 fps
The cut spring is good for 300 and will most likely be used in my RT classic.

The AIR valve is a dump chamber design, therefore velocity is a function of chamber pressure. Different spring tensions are necessary to counteract the differing chamber pressure.

4. The dual piston design is the heart of the two-stage system. The small piston handles the low pressure stage of the cycle, venting a small amount of air into the powertube. By the time the air pressure is equalized with the pressure in the dump chamber, this new equalized pressure pushes on the larger piston, Accelerating the bolt. At this time the bolt should be past the next ball in the stack and is ready to go full throttle, and retract quickly to maintain firing rate. Due to this small loss in pressure during the "gear change," lvl 10's efficiency will be slightly less than a normal AIR valve.

5. Decrease the size of the carrier. The increased friction it generates will slow the bolt further. This is a trick usually reserved for very fragile paint, and the carrier must be oiled daily to prevent reliability issues, and even then this technique increases the likelihood of bolt stick.

Multiple Guess:

1. C. The correct modification is to file down the lip on the bushing. In case anyone didn't check, the nuts that come off the warp feed won't even fit in the powertube, and the plunger on the bolt certainly won't pass through the hole in them...

2. B. An autoresponse setup is too expensive, involved, and rare to be a "hookup," most likely the on/off pin was shortened, making the gun too reactive. I would test this on my own RT, but it's my baby.

3. A. This is not an autococker, people. The on off may be sticking and probably just needs to be lubed and broken in.

4. B, then A. This is a vague problem, with many possible solutions based on the situation. If it is a new warp, the brushes on the motor are not broken in yet, and are causing too much electrical noise, which the system interperets as a fire signal. The sensitivity should be set just where the warp turns continuosly, and then let it turn until the brushes break in and stop causing noise. If that does not work, then 12v simply generates too much noise period. In that case, radio shack capacitors should be used around the motor and the sensor to "scrub" the signal. As a last resort, use the jumpers to disable the sensor and intellifeed that baby. Of course, if you have an I-frame, you should do that anyways!

5. D. OK, in DNA, Uracil does not form a base pair, but Adenine sure does. Uracil is a Pyramidine base that forms a base pair with Adenine in RNA, not DNA.

With this knowledge I swear to do only good for AO and paintballers everywhere, to never fire my marker in anger, and to promote paintball(and mags) wherever I go. BTW, I have recommended modifiedpaintball ever since I first did business with you guys. Keep up the good work!

[Butterfingers]

Game ends mycroft wins see seprate answer post...