I have a .22 cal. Dreamline Tac that I'm trying to tune for both pellets and slugs. For 20.2 gr. NSA slugs I set the reg at 130 bar and for 18.1 JSB pellets 105 bar. For the pellets the setup works fine - 875 -920 fps. For the slugs, I'm only getting about 850 fps. Should I consider putting in the heavy hammer spring for increased speed for the slugs? How would that affect performance of the pellets? I'm also running the new FX 23 step power wheel.
FX Dreamline hammer spring
- Thread starter DaveT1
- Start date
I have a 177 cal Dreamline Tact that I bought as a compact. This had a 300 mm bbl and the best I could get out of 10.3 gr pellets was 895 fps. Thats with a dual TP. I then installed a 500 mm bbl and speed went up 100 fps with the single TP. With the current hammer spring, power is limited and it needs a stronger spring and possibly heavier hammer weights. Get a slug kit which should have all those parts.
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Yes the heavier hammer weight will open the valve for longer and allow more air to escape so this will help your slugs - but for pellets just dial the power down
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jasmlowe,
I have a 500 mm barrel and two power plenums.
Special-FX,
You mention heavier hammer weight. Is this in addition to a heavier hammer spring? Also, I noticed your avatar. Is that barrel band on a Dreamline? If so, where did you get it?
I have a 500 mm barrel and two power plenums.
Special-FX,
You mention heavier hammer weight. Is this in addition to a heavier hammer spring? Also, I noticed your avatar. Is that barrel band on a Dreamline? If so, where did you get it?
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I have a Dreamline 25cal. I used a Huma pin probe, with a Dual transfer port, along with a Huma hammer spring. Mine is a 25cal so it already has the heavier hammer weight. FX will send you one for free if it is still under warranty. If not, it think its $7. It will do more than the hammer spring. Plus it will allow you to bump the reg up high enough to get 50 foot pounds, because the power plenums will help, but not without a heavier hammer weight.
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jasmlowe,
Thanks for the tip on the hammer weight! I'll definitely follow up on it. Do you have a part number for the weight? I have also installed the pin probe and dual transfer port, so it looks like the weight and spring are the next steps. Isn't the FX rabbit hole a fun place to explore...
Thanks for the tip on the hammer weight! I'll definitely follow up on it. Do you have a part number for the weight? I have also installed the pin probe and dual transfer port, so it looks like the weight and spring are the next steps. Isn't the FX rabbit hole a fun place to explore...
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I just saw this thread and was interested in the comments. I picked up a new fx dreamline tactical two weeks ago. It came configured with the 17cc power plenum, 23 position hammer spring adjuster wheel and the low/med/high transfer port wheel. I'm assuming this is the new standard configuration on the fx dreamline tactical. Would this be correct?
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You should be able to run 150 bar reg pressure with the factory hammer weight and spring. If you watch any of the FX Master Class videos Ernest runs the reg at 150 bar when he tunes for power. You should not run a heavy hammer spring or hammer on a low reg pressure. Your biggest obstacle is the 300mm barrel. Put a plenum on it and jump the reg pressure up and you will see a nice velocity increase.
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The Huma heavy duty hammer spring gave me about 35fps increase over the oem spring, 177 gun shooting 13.43gr slugs and pellets, about 25fps with 16.2gr pellets. Running 155bar on the regulator.
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I ordered that Huma so called heavy duty spring.. when it came in it was the same length and wire diameter as what was it.. I installed it and didn't gain enough to mention... My biggest gain was a heavier hammer weight..
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Must have been a mix-up at Huma because the one I got was considerably heavier gauge wire than the oem spring
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