Big problems v2 gearbox, need help!

[Elliott761]

Originally Posted by Grevn

ok so i have fixed everything and put it together and my chronogragh arrived today

it shoots 128-132 m/s with .20
and 108.5-110 ,/s with .28
i have a m130 spring installed, would this suggest that i have good compression in the gun?

And thanks alot guys for the help and guidance!

a wierd thing though is that it doesnt want to ffed from my highcap anymore (that came with the gun), but it feeds prefectly with my ca midcaps(wich is the only ones i use anyway) ^^

Does the mag wiggle in the mag well when inserted, if you added a new hop up unit too sometime the catch for bbs may not be pushed out the way to release them

Sent from my LG-D852 using Tapatalk

[Grevn]

Originally Posted by Zeroroaster

132m/s isn't bad at all, Grevn. I get that with an M110. hehehehe.

Seriously, it's still good. The feeding from a hi-cap could mean the mag can't deliver fast enough for your new setup...just sayin'.

A come on haha, how do you manage that? Very tight barrel or just insane compression?

I will pull it apart After the weekend to check how everything is Holding up After playing saturday and sunday.

Btw, were i supposed to put silicon Grease on the cylinderhead o-rings? And teflon Grease on the Pistons teeth?

[ThunderCactus]

Ive been finding more people with high fps on low springs lately. Cant help but wonder if its the springs and not the guns....
I recently tested a pair of SHS springs in a pair of guns, and found they both shot 30fps over their target, but according to reliable sources they lose 30fps once they settle.
Ive known some springs in the past to shoot over their ratings, and mislabeled springs is nothing new to airsoft. Buying a guarder spring used to be a game of roulette. In fact we used to buy a pair of springs when upgrading just to make sure we got ONE properly packaged spring lol

[Grevn]

Originally Posted by Zeroroaster

Well Grevn, physics is your friend. You don't do all that schooling just to hang a paper on the wall. hahaha. An airsoft gun is exactly that, physics. Whether it's a BB gun or a complex drive train, it's all about efficient transfer of energy. Balance. I calculate what I need to get the BB to do what I want, then just build the gear train accordingly. Start with the BB, not the gearbox.

Alot of people throw alot of money into their gear when all they really need to do is study the science. It's just a tiny plastic BB..how much energy do you really need?

Oh yeah, gear grease on the gears (teflon) and synthetic on the o-rings. You can put grease on the head o-rings if you want. It swells them up nice and tight to the cylinder. But that also depends on the type of o-ring, but we'll leave that for later.

Just so you know, I had to put a 100 spring in my Combat Machine because it was firing 470 fps with a 120 (still using a 9.6V), and now it's a comfortable 390-ish. Physics, my man....it's all physics.

aah come on, physics is my enemy, im a carpenter haha ;D But shouldnt the fps of the bb only come down to barrel length, barrel inner diameter, cylinder volume, spring and compression? or am i missing something? :P

i have the right cylinder volume if what the dream army chart of their cylinders is true, 6.03 363mm barrel, 130m spring. maybe my compression is off, gonna test to mod the bucking to not loose anything there

im shooting .3 bbs now btw

[Grevn]

Originally Posted by ThunderCactus

Ive been finding more people with high fps on low springs lately. Cant help but wonder if its the springs and not the guns....
I recently tested a pair of SHS springs in a pair of guns, and found they both shot 30fps over their target, but according to reliable sources they lose 30fps once they settle.
Ive known some springs in the past to shoot over their ratings, and mislabeled springs is nothing new to airsoft. Buying a guarder spring used to be a game of roulette. In fact we used to buy a pair of springs when upgrading just to make sure we got ONE properly packaged spring lol

hehe thats true, ive got a madbull m130, and since i shoot 130m/s with .2s thats pretty spot on

[Grevn]

Here is the beauty btw ^^