Maddmann springs, RT, and a velocity screw ?

[yakitori]

well, heres my situation. When I adjust my velocity properly w/ the Stabilizer, to about 800psi, my front velocity screw has to be screwed in nearly all the way to get the proper velocity. Then I also have the RT.

heres what Im wondering. If I get the maddmann spring kit and replace the drive spring to the lightest one, then I would be able to unscrew my front velocity screw more and possibly turn down my stab a little more and get a little better efficiency? Also, will it interfere w/ RT functioning?
And finally, if the RT is working great after changing the drive spring, can I replace the thick RT sear spring to the stock one, since there is a lighter drive spring; would this make my trigger pull lighter and still not interfere w/ the RT functioning?

Gonna have to call in the pro's on this one. NN where are you, Coenen, anyone w/ maddmann and RT experience, or extensive trigger/drive/sear springs knowledge. Thanks!

All you noobs here that keep asking retarted ?s. let this be an example of a meaningfull acceptable question. One that you need help on after you have searched (literally).

[Coenen]

If you have a chrono handy:
What kind of velocity are you getting with the screw all the way out and all the way in respectively?

If you are shooting hot enough, I see no reason why the light spring and dropping the Stab down to 700-750ish. shouldn't be workable. Worst comes to worst you could always just get a higher flowing line for the R/T.

I didn't like changing sear springs it messed up the feel of the trigger for me. I also think you would want to stick with the heavy sear spring to ensure that it catches consistenty at high ROF.

[E r y k]

shouldnt you have the velocity screw all the way out instead? if its in, it is constricting the air supply... imo its best if you have nothing obstructing the flow. set your stab lower, and back out the velocity screw. (screwing in decreases, and screwing out increases)


what happens when you unscrew the velocity screw right now? imo (again), just lower you stab and unscrew the velocity screw all the way out... i dont see why you cant do it right now?

[pwtzz]

I thought that the only way to get the most out of your gas (efficiency) was to sweet spot the regulator? and then just tune the velocity using RVA?

[yakitori]

first off, thanks for the good advice from everyone. :D

Okay, right now my velocity screw is about 3 turns from being all the way in. I also thought it is ineffecient constricting air. W/ the stab set to about 750-800psi, I am chronoed to about 275-280fps. Some places I play want it below 270 and for speedball below 260. In a nutshell, I am shooting slightly hot at about 800psi.

I cannot get the velocity screw all the way out and turn down the stab, because it will stop cocking before the velocity will go all the way down. So, I have to have enough pressure to supply blowback, but it still wont drop the velocity much. And it uncocks when I use the RT w/ like this.

Once w/ the velocity screw turned out, instead of in, I was chronoed at about 334fps or more. Thats is the ball didnt chop.

My conclusion is that I can get the Maddmann light drive spring and turn my screw out a bit more, then turn the stab down to about 750ish, It will be more efficient because the velocity screw wont be constricting air space in the power tube to achieve a velocity of 260-280fps. I think the RT will be okay because I only have a reloader on it, I have to turn the RT wayyyy down just to keep up. I can still open the air flow a lot more, so I think that the line size is okay for now.

thanks again guys:D

[E r y k]

does it not recock when you dryfire w/ the velocity screw out?

its normal... just sweet spot it w/ paintballs because they provide backpressure to the gun to recock

[yakitori]

actually is doenst recock mostly when I have paintballs in it. I also have a silenced sear spring mod w/ a rubber tubing around the sear spring. I thought that may be the reason for uncocking, but I took it out and it did the same w/o it, So i put it back in. it silences the pinging noise very well, so I would like to keep it in if it isnt causing the gun to uncock.


Thanks for the input.:)

[mpquin88]

Rather than starting a new thread, I have a few questions related to this topic. I have a 98C with R/T and RVA. Previous to installing the R/T, I could get my gun up to 320 fps (not that I need to). Now with the velocity screw ¾ of the way out and the RVA all of the way in I can barley hit 280. I would like to be able to get the velocity up to 300 and be able to fine tune back to 280 with the velocity screw and RVA. The gun is less than 3 months old and has fired about 5000 times and there does not appear to have any air leaks.

Will the Madman Spring kit help in increasing the velocity? If so, would a lighter or heavier spring work best?

Any other possible problems that may cause the loss of velocity?

[yakitori]

yes, I beleive that the maddman spring kit will help you w/ your velocity problems. IS there no way to get the RVA to do the trick or do you want to keep the velocity screw turned out?

I plan on getting a maddman spring kit. When I do, I will let you know how it works out for me.

You may want to ask Coenen, he has an Air Tipps RVA and a maddman spring kit in his setup.

[mpquin88]

The RVA will NOT do the trick. I have tries every possible combination between the RVA and V screw and the range is between 250-280.

I installed the R/T myself and it works very well. Not sure if the addition of the R/T has anything to do with the loss of velocity. It should use only excess gas.

we'll see what the pros have to say !

[pwtzz]

im not a pro, but i would really say heavier springs, RVA adjustment, velocity screw all the way out, if that doesn't help i'll hit my head against the monitor :D

edit: RVA rear velocity adjuster

[ALLGROWNUP]

what is a RVA? A rear veloicty adjustment?

[yakitori]

what do you mean what the pros say. I just told you that the maddman kit will work for you if youre having problem reaching 260-280fps. change out the drive spring for the stiffer one in the kit. this should help increase your velocity. SOme say up to about 30fps increase.

The RT doesnt have anything to do with it becuase it uses blowback gas.

Since you cant turn the velocity screw out much more, I would turn it in to at least halfway, and then change the hammer spring in the maddman kit to the stiffer one and adjust velocity from there.

go ask tippmann, they send a reply usually w/in 12-24hrs.

[yakitori]

If anyone happens to have the lightest drive spring laying around from their maddman kit. I will gladly take it as a donation. Really, PM me and I will take it off your hands. :D

I dont really need the all the springs in the kit, just the lightest drive spring.

[JDS753]

i'd send u mine but thats the one i'm using/modifing for my gun.

for those that have the maddman springs were they like really long compared with the stock? mine had to be trimmed majorly. did anyone else have to do that?

[Coenen]

I just finagled mine into the marker, after a bit of use they compress down to the propper size.

[euchon]

after 'finagling' the maddmann high tension spring into mymarker, i unscrewed the RVA too far and the pin came out of the rear bolt. This allowed the spring to flex and bend out of position.
Not sure if it bent so far out of position because it was the high tension, or because the maddmann was new and still really springy.

Just a warning to anyone else, watch how far back you let your RVA go, you might damage your spring.