ms 100 springs

Stercus Accidit

100 metres per second and .2g bb equals 1 joule....ideally.

Is it possible to order such a spring and find yourself in hot water due to quality control, bedding down etc?

Is it a good idea providing you allow the spring to compress and get its power down a bit first or is it asking for trouble.

Then combined with the possible addition of a tightbore is this a big no no?

Any lads here packing ms100s? or all ms90

kdouglas

it all depends on the brand of spring you get and what other parts you have in there... according to http://arniesairsoft.co.uk/?filnavn=/articles/21c/springs.htm all the M100 SP100, PDI 120% theoretically fire at 1J, but if you look at http://arniesairsoft.co.uk/?filnavn=/articles/newbie_guide/faq/spring_guide.htm you can see that this varies in the real world

davvowl

get an m100 and a tight barrel
if its over 328fps when you chrony it, cut the spring 5mm by 5mm till you get the desired fps

kdouglas

ugh... cutting springs just has bad idea written all over it in my mind, unless your willing to heat it and crimp the end the way they come, you'll end up with a sharp edge which could potential damage the inside of your piston or the spring guide

personally i'd probably buy 2 or 3 (springs are cheap enough anyway) and if one chrono'd over 328, remove it and throw it in the bin


Edit: I'd just like to point out, i am by no means recommending you knowingly upgrade your aeg to over the legal limit, an m100 should in theory fire at 1J and is the maximum i would recommend anyone in ireland purchasing

Harekin

Is it technically illegal to buy a spring (which in theory if it was actually in your AEG fires at about 350fps), compress it for a while outside the AEG so it beds down all its going to and then put it in your AEG so it'll fire at 328fps?

kdouglas

if the spring fires at 350fps, itll fire at that, even when you compress it, itll eventually return to it's original size (unless you heat it while it's compressed so that the pitch on the spring changes)

buying a +1J spring is not technically illegal, since it's just a spring and could potentially have many other uses aside from airsoft. However buying it and upgrading an aeg with it would mean you would be in possession of an illegal firearm and also possibly in worse trouble for modifying the aeg to become a "firearm" in the first place, just dont do it

Harekin

But if you compress a spring to a certain point it eventually wont snap completly back into its original shape, its physics. So if you compressed it so it "bedded down" before you put it in the airsoft itself, you'd have a spring that fired at 320-328fps without a risk of it getting lower than that over time, but without in any way making it a "firearm" by putting in the spring and hoping it'll bed down once inside the airsoft.

You know what I mean?

Hivemind187

Harekin wrote:

But if you compress a spring to a certain point it eventually wont snap completly back into its original shape, its physics. So if you compressed it so it "bedded down" before you put it in the airsoft itself, you'd have a spring that fired at 320-328fps without a risk of it getting lower than that over time, but without in any way making it a "firearm" by putting in the spring and hoping it'll bed down once inside the airsoft.

You know what I mean?

How do you plan on finding out that it is producing 1 joule of energy in AEG conditions without actually putting it IN an AEG?

kdouglas

you know, it's easier just to buy a couple of different springs that are supposedly 1J and see which one produces the best results, odds are your going to be a little under 1J anyway with a 1J spring

nonex

why not just mess around with the 0 ring on the piston, you can play with about 15 fps up or down,it works for me

davvowl

kdouglas wrote:

ugh... cutting springs just has bad idea written all over it in my mind, unless your willing to heat it and crimp the end the way they come, you'll end up with a sharp edge which could potential damage the inside of your piston or the spring guide

of course after cutting it you have to bend it
so it looks like this /\/\/\/\/|
and of course not like /\/\/\/\/\
know what i mean ?

i did it on my p90 which fired with a very stable power (+/- 5 fps) for over a year of (ab)use (prom spring = teh sh1t)