[dastierjaeger]

So I am working on a joule creep build and just cant figure out what the ideal piston weight would be for a vsr 10 running a 303mm barrel using .43s. any help would be great

 

[1tonne]

It depends on many things. The two biggest things are how big your spring is and how the spring releases its energy. But normally, if you have a big spring, you can make the piston as heavy as you like.
Also, if you are using 0.43gm bb's, you could increase the length of your inner barrel to 430mm and this will also increase your joule creep by a good amount.

 

[Rvl]

I use lead golfers tape and keep adding weight
Stock Tm vsr piston is 19gm and Laylax ,Pps , Vfc ,AA are around 38gm
TM real shock pistons are 99gm

 

[1tonne]

Lead Golfers Tape. I have never heard of that. Sounds great.

 

[Rvl]

Hardware stores have lead tape but I found the glue is not very strong
Golfers tape glue is better

 

[KillerDad]

I got the weights from a real shock vsr. I wonder if they would fit on a pdi piston. ill have to check it out later

 

[dastierjaeger]

Ill be messing around with spring for a little while until i get my desired joules (currently have a laylax 170 and 150 in my hands) as I don't want it to have crazy high joules as I am not trying to hurt anyone. I just like tinkering with my gun as I wait for my mancraft build to be completed by another tech. But for weighting my piston I am use both copper and steel wire and wrap the piston with that so far my piston is about 65 grams. As for the barrel length i have both action army 430mm and 303mm and so fa from my personal experience I have had better luck with the shorter barrel.

 

[heregoeshell]

A quick thought: My present theory involving piston weighting/longer cylinders is that it increases the time that the air is pushed through the nozzle, which then allows the use of longer barrels with heavier bb's while still maintaining joule creep. In a guess, I would assume that the weighting of the piston increases the travel time. Theoretically, this would then alter the ideal length of the barrel and reduce the cylinder to barrel ratio. Any thoughts?

 

[redmoon3580]

Any thoughts?

If this were the case weaker springs would provide more creep. This is not the case.

 

[heregoeshell]

Redmoon, I don't feel that this is the case, though the testing of which would be referential at best and not fully applicable to actual in game use. You're not wrong, weaker springs provide less joules, but have you taken the time to test the actual joule creep that occurs with a weaker spring? Not trying to sound confrontational, but in theory, while the actual joules would be lesser, the most efficient ideal cylinder to barrel ratio might be lower, if my theory is correct.

In summation: lower spring might lower the ratio of cylinder to barrel for most efficient joule creep with that set up. Not saying that it will be of higher joules than a stronger spring, but I believe it will affect the ratio and is part of why weighting the piston works.

 

[MHairsoftsniper]

I have a ssg10 and I am going to get a scorpion piston and spring guide. I am also going to get a 2.8 joule Rapax spring. I was wondering what the best weight for this piston would be.