Confussed Newbie

du beton

hi guys i know this is a little off topic but hope ye can help.I'm new to airsoft and only hav a mach11 blowback at the mo. My younger bro went whole hog and got A Steyr civilian and an AKS both by JG. He bought a chronograph too.Heres the prob, the chrono on fps clocks the ak at 350fps and the steyr at 330fps,then turning the dial to joules selection gives a reading of .5 joules. Both these guns were chrono'd wit .2grambb's. These discrepencies make me wonder if he got the right chrono,does he have to use a formula to calculate the joules ? I know that the should not exceed 328fps and wonder if you guys can help with advice, or can point me in the right direction.Would be much appreciated:confused

liamo333

Put around 3000rds through it. It might drop down to the legal limit. If that dosrnt work shoot off a few rounds on full auto, then leave it for 24 hours and shoot semi a few times.

du beton

that works ? Will be hoping to put several thou bb's thru it, if he'll lend it to me that is . I have a sneaking suspicion that there's somethin funky with the Chronograph though 'cos theres no way that 330fps equatesn to .5Joule. If he used .25gram bbs would that drop the joule reading or increase it. I know stupid question but am a certified newbie;) . The helps much appreciated

liamo333

It i reading .5j because it hasnt been calibrated properly. Yep it should work, if it dosent and the gearbox is like the CA gearbox I can change the spring for you.

Boston

du beton wrote:

that works ? Will be hoping to put several thou bb's thru it, if he'll lend it to me that is . I have a sneaking suspicion that there's somethin funky with the Chronograph though 'cos theres no way that 330fps equatesn to .5Joule. If he used .25gram bbs would that drop the joule reading or increase it. I know stupid question but am a certified newbie;) . The helps much appreciated

The 1 joule is a contain of the spring, heavier bbs will go slower, lighter ones faster, but eitehr way it will always be with the same energy. And yes your chrono doesn't seem calibrated.

chalky

You probably just have it set for a lighter bb. The chronograph calculates the energy of the bb by using the formula (1/2)mv^2 where m = the mass of the bb and v is the velocity. you need to set it for the bbs your using for it to give an accurate reading in joules. using .25g bbs won't affect the actual energy rating of the gun, but it will affect the fps, so if you don't change the settings on the chronograph it'll give you a different reading in joules.

du beton

thnx again for the info, will get on to him to see about calibrating it and we'll see what reading it'll given then.If it's still wonky can I get back to you again bout it ?

Dar

I would assume the chronograph is calibrated for 0.1g rounds. Just multiply your reading by 2 to get the joule result for 0.2g rounds. ie: Multiply the 0.5j by 2 to get the correct result of 1j. Similarly for 0.25g rounds, divide by 2 and multiply by 5 to get the correct result, eg: (0.5j / 2) * 5 = 1.25j

Fiach Dubh

What make is the chronograph? To get an fps reading from some chrono's you have to program the BB weight in grains not grams. My chrono works like this. .20 grams is 3.086 grains.

du beton

I haven't a clue asked him to txt me the make and model but he hasn't had a chance yet so will giv him a buzz tonite to find out.do any of you folks own a jg aks or a jg steyr ? these are the two he has, any idea what the joule rating for these r ? just till we get the chrono prob sorted.would rather the chrono just read 1j, so we'd know for sure. Do you guys know any way of getting a cert to cover me to carry these in the boot of my car. Am hoping to purchase a jg (not sure what yet maybe m4), I have a mate with a paintballgun for speedballing(i think thats what he said).he got a cert from his local garda station, can we do this.Don't want any hassle

Dar

According to the Firearms Act (as amended), air-guns which fire with a muzzle energy not more than 1 joule are not classified as firearms, and as such are not subject to the provisions of the firearms act. Ie: you do not need a firearms certificate to own, transport or purchase an AEG.

kdouglas

du_beton: as Dar said, less than 1 Joule is not classified as a firearm, over 1 Joule is, however the gun must be over 1.7 Joules (i think, spitfire will clarify) to get a licence for it, so between 1 and 1.7, you cant have it, and if it is over 1.7 and you get it licenced, then you cant use it at a skirmish because it would be assault (regardless of if someone says its ok to shoot them with it)

ED E

kdouglas wrote:

du_beton: as Dar said, less than 1 Joule is not classified as a firearm, over 1 Joule is, however the gun must be over 1.7 Joules (i think, spitfire will clarify) to get a licence for it, so between 1 and 1.7, you cant have it, and if it is over 1.7 and you get it licenced, then you cant use it at a skirmish because it would be assault (regardless of if someone says its ok to shoot them with it)

Dissagree with that:"then you cant use it at a skirmish because it would be assault "

How can people play painball then?

Lemming

Lethal_Bullet wrote:

Dissagree with that:"then you cant use it at a skirmish because it would be assault "

How can people play painball then?

Paintball markers ARE firearms and require firearms certificates, and thus fall under firearms legislation except paintball has either an exemption or a defense (i.e. the DPP has been directed not to prosecute).

Excluding paintball (and paintball only under very specific criteria I should imagine), if you point a device designated as a firearm at somebody - you are in a whole lot of trouble

Boston

Lethal_Bullet wrote:

Dissagree with that:"then you cant use it at a skirmish because it would be assault "

How can people play painball then?

Paintball markers fire projectiles with a power of approx 16 joules and are thus firearms.

kdouglas

Lethal_Bullet wrote:

Dissagree with that:"then you cant use it at a skirmish because it would be assault "

How can people play painball then?

as Lemming says, paintball has a specific defense for it, and normally they have permission to use them only at a specific site, from what i've heard, getting permission/licence for your own personal marker is a very difficult thing to do

du beton

I was only asking about transporting the airsoft gear in the boot of my car. I heard that if the gards were to search the boot and find my mach11 for eg and they thought there was a possibility it was a firearm that they can seize it and send it off to be tested to see if its under 1joule. I'm new to airsoft and just want to make sure that I'm meeting the proper criteria.

retrospect

du beton wrote:

hi guys i know this is a little off topic but hope ye can help.I'm new to airsoft and only hav a mach11 blowback at the mo. My younger bro went whole hog and got A Steyr civilian and an AKS both by JG. He bought a chronograph too.Heres the prob, the chrono on fps clocks the ak at 350fps and the steyr at 330fps,then turning the dial to joules selection gives a reading of .5 joules. Both these guns were chrono'd wit .2grambb's. These discrepencies make me wonder if he got the right chrono,does he have to use a formula to calculate the joules ? I know that the should not exceed 328fps and wonder if you guys can help with advice, or can point me in the right direction.Would be much appreciated:confused

You could just use the poor mans chronograph : http://www.redwolfairsoft.com/redwolf/airsoft/BulletDetail?bulletID=34

du beton

my brother has a steyr aug jg, I popped home today for a game with him (he has an ak also so he gave me the lend) about two hours into shooting the crap outta one another his steyr went haywire,started misfiring so he took off the barrel for a look and a part (think it was the hop up adjuster)dropped off.He wants to know if theres anywhere he can go to to get it fixed.He loves that piece,was almost in tears.Any help would be much appreciated.

du beton

thnx retro for the info re chrono, wil do:D

liamo333

Find the part that fell off, try and put it back together, pray.

CrazyRabbit

du beton wrote:

I was only asking about transporting the airsoft gear in the boot of my car. I heard that if the gards were to search the boot and find my mach11 for eg and they thought there was a possibility it was a firearm that they can seize it and send it off to be tested to see if its under 1joule. I'm new to airsoft and just want to make sure that I'm meeting the proper criteria.

Dont give them a reason to stop you and search your boot

Seriously though, it's very easy to show them that it's not a real gun. After that, you just have to convince them that there is no criminal intent in having it in the car, and they'll let you be. I checked into the the whole transportation of AEG's thing ages ago. It's all based on intent. Carry a golf club down a main street at 6pm on a saturday and you are likely to be arrested. Carry a set of golf clubs at 11am while en route to a golf club...well, no need for the handcuffs.

du beton

thats good news still haven't got a proper AEG myself, had a go at my bro's jg aks fixed stock.....! Seriously considering gettin one, re: the steyr prob he tells me by txt that he put it back together a ran a few hundred bbs thru it and now the barrel has fallen off revealing the brass barrel, it still fires though. Has anyone had this happen before ?

Spitfire666

if its shooting at 330fps i would leave it as is as it is perfect. and its not illegal either as there is a margin for error so it would be fine.

the 350 one though id be careful about. run a load through it and see what it drops too and if not enough get a 100ms spring for it.
Yeah KD, under 1 joule doesnt need a licence, between 1 and 1.7 joules CAN NOT be licenced, and over 1.7 joules MUST be licenced