Can not get cocker to shoot over 200 fps

[kingkong]

Can anyone help I have just bought a second hand cocker and so far can not get it to fire over 200 fps. I have stripped as far as i can but do not have a valve remover (will soon) any ideas???

[Tom]

you could change the spring in the bottom tube you could also up you inline pressure

[kingkong]

Tried uping the inline pressure didnt realy help. I am looking at geting a maitenance kit and doing all the springs and rings.

Cheers

[Tom]

did you tighten the spring pressure on the bottom tube with an allen key

[kingkong]

pretty new to autocockers bottom tube ? do mean the velocity adjuster infront of the cocking rod ?

[Tom]

yea did you turn that clock wise that should up the velocity

[kingkong]

I have turned it all the way in and all the way out with very little difference in the velocity. I tried adjusting the front regulator to the point it blew the hoses of the 3 way. Still very little performance difference.
I imagined a cocker would be capable of shooting well over 300 fps and i would have to turn it down with a little adjustment. Does using a 3000psi bottle make much difference to using a 4500psi. Is it possible it will not function with the smaller pressure. I ask this because the marker came with a 4500 psi bottle and I have set it up to use a pre set bottle (removed cradle and replaced with asa adapter)

[skip]

what kind of autococker is it?
were you adjusting the foregrip reg or the lpr on the front block?
By the sounds of it you adjusted the lpr thats why your 3 way hose blew of. The lpr will do nothing to adjust the velocity.

[kingkong]

Bob Long

Yeah I sort of worked that one out. I found out you only adjust that for the timing. I also adjusted the grip/inline reg.

[kingkong]

I have been surfing the net looking for possible answers. One I came up with is the Valve has been put in upside down. Does any body know if the bob long valve has the same size holes or is one smaller ????

[skip]

i doubt that would be the problem. Is the rear spring hard of soft?
You could check if the valve is upside down by taking of the trigger frame and undoing the screw that holds the valve in place.

[kingkong]

Would the rear spring be the same as the velocity spring ??

I will strip it tonight and have a look at the valve and the springs.

Would the different pressure bottle make a difference ??

Thanks for your help as well !!!

How can I tell if it is upside down ??

Also I have to wait for my spring kit with the valve tool even if it is upside down.

[skip]

try winding your spring tension.drop your input pressure so it wont cycle then slowly udjust it higher untill it cycles properly at a desired velocity.
if that dosent work your valve spring could be too hard for the hammer spring.

[kingkong]

Thanks mate will give it a go.
I am planning on installing all new springs throughout. Hopefully this will solve the problem.
Should I wind out the velocity adjusting screw all the way until it stops when I install the new spring and adjust from there. At the moment it is in pretty far.
Thanks again.

[skip]

Would the rear spring be the same as the velocity spring ??
yes the spring in the tube below the bolt

I will strip it tonight and have a look at the valve and the springs.

Would the different pressure bottle make a difference ??
nope

How can I tell if it is upside down ??
once you undo the grub screw underneath the trigger frame you will be able to see part of the valve. there is kind of groove where the screw fits. If the valve were upside down which is highly unlikley once you undo the grubscrew you would be able to see the inside the valve.


it is most likley that its the valve spring if you cannot get over a certain velocity.

where abouts are you located?

hope that it makes sense

[kingkong]

Im in Perth

Unfortunately or fortunatley i seem to buy things that dont work to well and end up learning how to fix them.
It is all starting to make sense (a little). With your help and the good old internet I hope to be able to understand autocockers and the like and fix any problems that arise. When i release the pressure of the velocity spring I was shooting around 140 to 160, when I adjusted it all the way in I get around 200 fps. I imagined a cocker at full velocity would be very fast not 200fps. I hope it is the spring as this is the cheapest option. The funny thing is it cycles perfectly, doesnt chop paint, and sounds great when dry firing. Only the fps is down.

Cheers

[skip]

put the new springs in then see how it goes. udjust your inline reg so no air goes through the gun then slowley turn it up while shooting it a few times here and there.Put some paint through it and turn it up untill it reaces aroung 295s. if you cant get it up to that buy adjusting the reg, tension the spring some more. Another thing is have your paint matched to the barrel, if the balls are dropping out when its not shooting you may be loosing some fps on the shots.
good luck

[P.K.]

Bob Long

Yeah I sort of worked that one out. I found out you only adjust that for the timing. I also adjusted the grip/inline reg.

Unless you have other low pressure bits fitted, the regulator in the fore grip needs to be set at 350 psi.

Do you have a guage to measure this?

If you change your springs you will definitely be needing to set this at 350 psi.

If your fore grip regulator has an external adjustment try these steps.

1. adjust foregrip regulator to 350 psi
2. shoot over a chrony and adjust to 290 fps using your internal velocity adjuster ( behind the cocking rod ).
3. refit your cocking rod and any finer adjustments to your velocity can be made using your fore grip regulator.

If your fore grip regulator has an internal adjustment use these steps.

1. adjust your fore grip regulator to 350 psi.
2. dick around with your internal velocity adjuster until its at the speed you want.

Do not try to guess 350 psi. If you dont have a guage, get one.
This is probably all that is wrong with your cocker.

Maybe be try this before you pull it completely apart.

You cannot make a low pressure auto cocker just by turning the pressure down.

Be carefull as some valve set ups will store gas under pressure even after the bottle has been removed...dont blow your head off.

If it gets too hard seek professional advice and follow my simple rule,

Dont f#@k with shit you dont understand.

And remember cockers rock :thumbsup:

[CDG]

King Kong did you have any luck getting your problem fixed, if not it might be some help to contact Robbie (http://www.billspaintball.com/vb3/member.php?u=39) here on Bills, he does all the work on mine and JJJ cockers and I know did did all the work on your little beastie, he maybe able to shed some light on your problem

Hope this helps
Cheers
Chris

[JJJ]

King Kong did you have any luck getting your problem fixed, if not it might be some help to contact Robbie (http://www.billspaintball.com/vb3/member.php?u=39) here on Bills, he does all the work on mine and JJJ cockers and I know did did all the work on your little beastie, he maybe able to shed some light on your problem

Hope this helps
Cheers
Chris

Follow P.Ks advice or Skips & if you still cant get any go PM Robbie as CDG indicates. :thumbsup:

[kingkong]

Thanks guys will give it a go.

Please forgive the ignorance but if my inline reg doesnt have a whole for the guage how else can i test it.

[skip]

some front blocks have a hole for a gauge underneath.I dont have a gauge on mine see what the input is. I just try and run the lighest springs possible and adjust the inline reg. it takes a little trial&error to get it perfect.

[kingkong]

Cheers
I will order a spring kit and do as you suggest. Thanks for all the good advice.

[The Bear]

Anyone can help me with a cocker that shoots out nothing??
Problem:
Air tank is in, preasure about 2,800 PSI but the cocker just shoot nothing. It does cock back but there is no air coming out from the barrel and paintball keep rolling out of my marker.

Any Idea anyone? Its a Trilogy Cocker from WGP.

[Mike]

Give us a call dude, ask for John, 612 9679 0011, if he can't fix it, nobody can. :thumbsup: He might even be able to talk you through it, so if you can have your gun with you when you call! :thumbsup:

[The Bear]

Thanks Mike.... Good to see you here, Its me Dean The Bear from Malaysia. How are you doing Mike? I will call you tomorrow see what we can do with my cocker.

Cheers.

p.s. This forum is always very helpfurl with everything. Cheers mate.

[vendetta6]

Your problem lies within your inline reg. Make sure your velcoity adjuster(at the back of your gun) is in about 4 threads, or enough to provide a good push by the spring. Like someone said above 350 psi is a good starting point although I would start at 250. Ok so if you dont have a gauge, put the reg to 0 and work upwards. What inline do you have again?

[P.K.]

Thanks guys will give it a go.

Please forgive the ignorance but if my inline reg doesnt have a whole for the guage how else can i test it.

If you have a spare ASA with two holes in it you can screw a guage in one hole, an air line in the other hole and screw your reg into the ASA reciever.
Connect air and check your pressure, adjust as needed.

If you want consistancy from your cocker then you need to know this pressure. Bit of dicking around, but worth it.

Or use the hole in the front block, if available, like skip said.

If you use your adjustable reg on your bottle as an air supply, make sure there is a minimum of 250 psi difference between the bottle output pressure and the foregrip reg output pressure.
i.e. 350 psi from fore grip reg, you need at least 600 psi coming from your bottle reg.

[The Bear]

If you have a spare ASA with two holes in it you can screw a guage in one hole, an air line in the other hole and screw your reg into the ASA reciever.
Connect air and check your pressure, adjust as needed.

Is this the hole on top of the gun?? I mean the one right behind the feeding neck from the hopper?? The small little hole??

The bolt is perfactly placed, its only 2 sides you can put in.
1) hole facing up
2) Hole facing down ward.

I did it the right way number 2 but it still can fire, the sound is like I have put the bolt like number 1.

I have adjusted the reg too to a lower preasure and higher but its the same. Could it be the problem from my first question?

[BIG ROB]

The little hole at the top of the gun is to adjust the hammer release when you pull the trigger. Is the cocking pressure reg on the front under the barrel adjustable? is so have you tried turning it up a bit. They can cock and make a funny sound but not shoot if it isn't up high enough. I think it would be worth sending it to someone to get all of the settings right and then maintain it from there.

[Mike]

Thanks Mike.... Good to see you here, Its me Dean The Bear from Malaysia. How are you doing Mike? I will call you tomorrow see what we can do with my cocker.

Cheers.

p.s. This forum is always very helpfurl with everything. Cheers mate.


Hi Bear,

Things are cool over here dude, let us know when the next Malaysian Tourney is, we are interested in sending a couple of teams........ I await your call.

[kingkong]

Thanks for all the help guys. She is running fine now. Stripped and cleaned inline reg and replaced springs. Lubed her up and now she is going great.
Thanks Again