FX dreamline hammer spring tunning

[Floris]

Hey,

I was wondering if any of the fx Dreamline owners have tuned the hammer spring like the impact owners do. I dont mean turning the dail but tuning it with an allen key to get a bit more power out of the gun.

I have quite some play and shoot at the following settings:

Caliber: .22 (15 Gr, JSB Exact Jumbo)

Regulator 115

Hammer spring: Max

Temp: 10C

Speed: 906 average

This is how the gun came out of the factory but see that some owners get higher velocities.

Thanks,

Floris

 

[wimpanzee]

i finally found some 1mm washers that i spun in the drill against some sand paper until they dropped in.

i did tune the little screw as well, to take up slack out of the slidy thing, but i don't know if that had any effect on power.

right now i am running 150bar huma reg and getting 890fps with jsb mkii 33.9gr at max power wheel.

 

[cowabunka]

oh wow, that is impressive. Is that the only adjustment you made? max hammer spring with allen key? Would the stock reg give the same performance at 150bar?

 

[ohio_hunter]

i finally found some 1mm washers that i spun in the drill against some sand paper until they dropped in.

i did tune the little screw as well, to take up slack out of the slidy thing, but i don't know if that had any effect on power.

right now i am running 150bar huma reg and getting 890fps with jsb mkii 33.9gr at max power wheel.

how many shots you get at that speed?

 

[wimpanzee]

Only about 20, I just shoot one mag and refill, tube is at around 170bar then.

I can dial down the adjuster to get 2 mags - 32 shots - at around 810fps with the MKII 34gr.

And at 25 yards in my back yard, it is almost always one single round hole at both power levels with that pellet. By far my dreamline's favorite food.

 

[Cran]

So, i have an older (?) dreamline classic. Im getting higher fps on lower wheel settings. 820 at max and 827 or so at next step down. How can i adjust that hammer spring tension so the fps corresponds to the power wheel settings. Seems it(hammer tension) aint right for reg pressure of 125. .25 cal, shooting hn hunter extreme at 26 gr. Sms fubarred some. Any ideas ?

 

[Cran]

how many shots you get at that speed?

Where is that “little screw” on an older dreamline tactical

 

[Joedirt199]

It is in the little slider that goes next to the hammer spring dial. Takes a pretty small allen key.

 

[Cran]

It is in the little slider that goes next to the hammer spring dial. Takes a pretty small allen key.

Thank you, wheni watch tuning vids they have the ass end off and use a 3 or 4 mm to adjust so i am a bit confused. I know where the screw you mention is i think. Takes a ninety degree allen to turnit? Can i get in trouble winding it all the way in (clockwise ) to lower spring pressure? I need to get the hammer spring “on the step” / plateau…so thoght i would start on the low end and work my way up through the chronie…? That make sense ya think. Like your handle probly wont go all the way in, just enuff to drop the chronie low enuff to start coming bak up

 

[Vetmx]

How far do you have to turn the hammer wheel down to get 800fps?

 

[Joedirt199]

I usually start at max on the dial and then turn in the small adjustment screw till I get about 30-40 fps faster than I want my final velocity to be. I then back off the dial to get my final velocity.

 

[Trucker3573]

When you say hammer spring maxed do you mean on the wheel or the Allen adjuster? If it is on the Allen adjuster and truly maxed you do not have it tuned properly at 115 bar. At that reg pressure you do not need max hammer pre load.

 

[Joedirt199]

Turning clockwise will make the spring the strongest, not lessen the hammer strike.

 

[Cran]

Turning clockwise will make the spring the strongest, not lessen the hammer strike.

Thanks Joe, so i turned it in (clockwise) all the way to where the power whell wont turn. Backed it out till wheel would turn.Regs at 130 and i cant seem to get more than 815 fps or so. I see vids that want it at 900 more or less. They only have 130 or so on the reg. Still shootin hn hunter extreme 26 gr. This is an older (bought it used) dreamline tactical. That seems as good as I can get it at this reg setting. Dont really want to reduce shot count (i get three mags thru it). It spanks ground squirrels ok but not as well as i would like for a humane kill.

 

[Vetmx]

Thanks Joe, so i turned it in (clockwise) all the way to where the power whell wont turn. Backed it out till wheel would turn.Regs at 130 and i cant seem to get more than 815 fps or so. I see vids that want it at 900 more or less. They only have 130 or so on the reg. Still shootin hn hunter extreme 26 gr. This is an older (bought it used) dreamline tactical. That seems as good as I can get it at this reg setting. Dont really want to reduce shot count (i get three mags thru it). It spanks ground squirrels ok but not as well as i would like for a humane kill.

And this is why I asked the question in post #10.

 

[Cran]

And this is why I asked the question in post #10.

I cant seem to find your question? Could you run it by me again please?

 

[Cran]

I cant seem to find your question? Could you run it by me again please?

I find vetmx asking about how far i have to turn the wheel down to get 800. I cant get much more than that at Max on the wheel.

 

[Trucker3573]

Thanks Joe, so i turned it in (clockwise) all the way to where the power whell wont turn. Backed it out till wheel would turn.Regs at 130 and i cant seem to get more than 815 fps or so. I see vids that want it at 900 more or less. They only have 130 or so on the reg. Still shootin hn hunter extreme 26 gr. This is an older (bought it used) dreamline tactical. That seems as good as I can get it at this reg setting. Dont really want to reduce shot count (i get three mags thru it). It spanks ground squirrels ok but not as well as i would like for a humane kill.

26 gr is a heavy 22 projectile. The dreamline is no power house really. What length barrel ?

 

[SciueraPlumbea]

26 gr is a heavy 22 projectile. The dreamline is no power house really. What length barrel ?

Dreamline isn't the slouch people think.

A dreamtac .25 with a 15cc power plenum can produce 58-60fpe. Add the huma power tune spring and a single power plenum increment, you're up to 64. add a heavier hammer and larger plenum a respectable bit more.

 

[Cran]

26 gr is a heavy 22 projectile. The dreamline is no power house really. What length barrel ?

Sorry if i misspoke, it is a .25 cal shootin those 26 gr pellets. Its 600 mm barrel, Dreamline tactical