bulked plinkster pretty much done , now for tuning ( pics

bulked plinkster pretty much done , now for tuning ( pics

Joined: April 28th, 2010, 12:23 am

February 18th, 2017, 8:03 pm #1


well, not pretty , but i kinda knew that going in..the tank will eventually sit at 6 oclock below the stock, but for now this was expedient..An interesting part, I assume because of the massive plenum volume between the tank and valve is that the gun self regulates a bit.. I cannot get a shot off outside a 15fps spread,,pretty interesting .. another odd side effect is the valve doesnt always have the pressure to seat the check , so i need to recock quickly on occassion.. But thats easily fixed by going back to the heavier valve spring.


another odd factoid , the valve sealed the tube with a 112 oring , yet my machined adapter only sealed the tube with a 113.Im down a few fps from just slapping in a 12 gram , and again , it needs to be tuned differently now that its almost all gaseous co2 reaching the valve, and not liquid..



fun and easy project overall, the only challenge at all is sealing the tube..( you can externally test the bulk assembly , foster etc)matter of fact now that the pressure leveled off after initially piercing the 90 gram , the valve now seats no problem at 1000psi




TUNING ADVICE WELCOME, NEVER HAD A BULK GUN
Last edited by robnewyork on February 18th, 2017, 10:14 pm, edited 1 time in total.
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Joined: September 21st, 2007, 12:13 pm

February 19th, 2017, 3:38 pm #2

Is there a reason that you just don't charge the tube? If it holds three 12g's there is a fair amount of capacity for just bulk filling it.
I think it would make for a much neater, easier handling package.
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Joined: April 28th, 2010, 12:23 am

February 19th, 2017, 4:37 pm #3

But , I really have no reliable co2 refill center.. I live in the sticks nowadays. AS it sits, I can fill via the foster if need be .. The good news is , It still works in the stock format.. I really like the looks of the gun in stock format, But then i figure, No one sees or uses it but me..I could not come up with a simple plan to make it a " pretty " bottle gun without chopping the tube and the stock.. Which would also be fine if mrod air had spares.The gun looks like something from mad max, and not in a good way
Last edited by robnewyork on February 19th, 2017, 4:39 pm, edited 1 time in total.
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Joined: March 28th, 2002, 6:54 pm

March 18th, 2017, 1:06 am #4


well, not pretty , but i kinda knew that going in..the tank will eventually sit at 6 oclock below the stock, but for now this was expedient..An interesting part, I assume because of the massive plenum volume between the tank and valve is that the gun self regulates a bit.. I cannot get a shot off outside a 15fps spread,,pretty interesting .. another odd side effect is the valve doesnt always have the pressure to seat the check , so i need to recock quickly on occassion.. But thats easily fixed by going back to the heavier valve spring.


another odd factoid , the valve sealed the tube with a 112 oring , yet my machined adapter only sealed the tube with a 113.Im down a few fps from just slapping in a 12 gram , and again , it needs to be tuned differently now that its almost all gaseous co2 reaching the valve, and not liquid..



fun and easy project overall, the only challenge at all is sealing the tube..( you can externally test the bulk assembly , foster etc)matter of fact now that the pressure leveled off after initially piercing the 90 gram , the valve now seats no problem at 1000psi




TUNING ADVICE WELCOME, NEVER HAD A BULK GUN
Those 88 gram bottles are 8$-10$ each now, aren't they? $80 should about cover a 20lb bottle of co2 and a simple bulk fill setup. 20lbs of co2 lasts a very long time, at 1/20th the cost of 88 grams.
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