Basicly i want to change the cylinder set with pdi palsonite cylinder set vc, i'm hoping to get a better accuracy with pdi vacuum piston.metallicafatcat said:
Basicly i want to change the cylinder set with pdi palsonite cylinder set vc, i'm hoping to get a better accuracy with pdi vacuum piston.metallicafatcat said:Why do you want to change?
How about the vacuum piston? I heard the o ring ran out pretty fast, i know that pdi sell the o ring , but i hate to break down my riffle time after time. That's one of the reason i bought laylax part.Mgunner said:My VSR is all PDI Inside, and it shoots very well. Parts are well made, fairly priced, and so far, I haven't had anything break.
The spring? so what you recommend the best spring , 170, 190 or 210?, because currently i'm using 210 sp with madbull 0,43 black bb with 520 fps result but the grouping is not enough for me. is it because the spring is to high? from 40 m i only get probably 30-40 cm grouping.Mgunner said:I figure that VS pistons aren't the best over the HD piston because like Metallica said, barrel suck, AFAIK, is a myth and they are impossible to get perfect compression with.
Headshot, the key is in the spring!![]()
Well i'm using the pdi w hold rubber and pdi chamber of course. Is is because the rubber? Do you have any recomendation for the rubber?metallicafatcat said:Sounds like you have a huge hop system flaw. Changing brands won't help you any except for more consistency.
I'm using pdi 6,01 innerbarrel 515mmmetallicafatcat said:What barrel are you using?
Yes i've been looking for some actually and i couldn't fine any installation error. I get a perfect compression from the part. Probably the main problems is in the hop up area. My PDI hop up chamber and PDI bucking part is align already, including the scopes. I aligned the scope and the barrel set without using the stock. Because i do find the stock is not perfectly mold, so i never align the scopes with the body install.metallicafatcat said:Ok, just wondering.. you didn't mention it so I assumed it may have been the stock barrel. Have you tried looking for installation errors.
Yes that's one of my plan cheese man, i'm planning to use the sp170 hoping to get a better grouping. Thanks for your input,Cheese Man said:I would be inclined to say that your issues are not with the parts, it is with the adjustment and tuning of those parts. Frankly, the parts you have in the rifle right now are just fine, you just need to spend more time tuning it. It also wouldn't hurt to downgrade that spring a little, or use a hop system better suited to insanely high fps than our own bump-in-a-rubber-sleeve system.
Granted, 520 is not insanely high, but I find that the bump-system maxes out at a little over 400. After that, the bb needs more stabilization in order that it does not wobble in flight.