Will this work?

[cripto]

Answer to # 3: replaced wiring! whats wrong with the gear/piston combo though? I guess I failed the quiz. Stock G&Gs have metal cylinder heads, so I don't think thats a problem. As of now, the piston is pretty far forward, so I don't think sorbo will push it too far back. This is a plastic bodied gun so...yeah.

[VoidSuicide]

Keep in mind im guessing and have yet to look at the gear set/piston combos, but the first thing that comes to mind is that then number of teeth on each do not match, as in one has too many teeth to match the other and work properly.

for question 3, the answer is the wiring, unless G+G has another problem that people here on the forum do not discuss.

Edit: Alright, I've looked at the gear sets and pistons, and i have to admit that I'm not sure of what it is exactly, so I can only guess that it's something about the ratios of the gearsets, something I know nothing about.

[Skywalker]

Its the half tooth factor

[VoidSuicide]

explanation please? this is something major I missed.

[cripto]

yes prease exprain.

[Skywalker]

Lol. Some gearsets need half tooth pistons. Only the super duper torque ones. And then the other ones don't need a half tooth. I'll explain when I can type out better than on my phone...

[Skywalker]

ok these gears and this piston

http://www.airsoftpanda.com/product_inf ... 6e7qcn6cr3
http://www.airsoftpanda.com/product_inf ... 6e7qcn6cr3

will not work because the gearset requires you to have a half tooth piston. Look at the sector gear, the gear all the way on the right side. See how it has teeth going all the way around? Imagine that gear meshing with the piston.... if teeth are always making contact with the piston rack, how will the piston be released to shoot forward? The answer is, you need a half tooth piston. Because the gears are such a high torque ratio, both sets of teeth on the sector gear are the same diameter. So to make sure that the set of teeth that go all the way around (and make constent contact with your spur gear) aren't making contact with your teeth on the piston, you need to run a half tooth piston with them.

I think for the other pair, Dom is pointing out that the gearset does not require a half tooth piston, but one has been selected for it. This will still technically work, but if you can use a full tooth piston, you should. Gives you more surface area and makes the piston stronger.

compare the 2 pistons:

Normal (full tooth): http://www.airsoftpanda.com/product_inf ... 6e7qcn6cr3

Half tooth: http://www.airsoftpanda.com/product_inf ... ts_id/2090

[cripto]

OOOhhhhhhh! Thank you! I always thought half tooth meant half the number of teeth on the piston or something like that.

[Skywalker]

Nope, its the width hey Cripto do you need anything i'll be in Flo tomorrow

[Dominum]

Exellent, Mr. Skywalker is exactly right. For those of you wishing to read more on the subject (as I'm sure you all are very interested) please see my answer to the OP here: http://www.southcarolinaairsoft.com/for ... 797#p29797

Also, some clarification on the number of piston teeth:

Nearly all pistons have 16 teeth. There are a few exceptions of course. The special long type gearboxes used in SR25s (exceptions), L85s(exceptions), PSG1s, and SVDs have a special long type piston and a sector gear with two extra top teeth. The piston of course has 18 teeth as well (This makes the traverse farther and the cylinder longer, thereby giving it more volume, and thusl compensating for very long barrels with ease). Also, there are special short stroke pistons made by some manufacturers which have only 12 teeth, and of course require a matching sector gear to be purchased or made. Also, there are the double sector gears which have a total of 16 top teeth, but separated into two different sections of eight teeth, so really it has only eight teeth but twice, and it cycles the piston twice per revolution, making it a "double" sector gear.

I must point out of course that were you to go count the teeth on your piston right now, you may find only 15. The reason for this is that the second to last tooth is not only not needed, but it can also be caught by the sector gear on it's return on higher ROF setups. Because of this, many companies choose nowadays to remove it right off the bat, and thus most aftermarket and even many OEM pistons now have the second to last tooth removed, and though this technically leaves only 15 teeth, they are still a 16 tooth piston as the one removed does not make their traverse any different.

[Skywalker]

Negative on scar h there mr domydom. Not even on the SSR ... I'd love it if it was extended but oh well. .... unless there is another brand that you're thinking of? And don't forget PSG 1 and L85

[Dominum]

My bad, you're right on that one. Fixed and added those other funktastic gearboxes .

[Dominum]

Hold up, don't the Classic Army ones use the extended GB? I know the VFC uses a stnd V2, but I could have sworn I worked on a CA one with an extended V2... Not much luck verifying it yet...

[Skywalker]

I need a shirt -- "I <3 funktastic gearbox"

Uh. I've only dealt with ca scarLs so you could maybe sorta be right. ... I would be impressed in CA if that was true

[Star_folder]

I'm 90% sure that CA SR-25s have extended gearboxes, A&K, old G&P SR-25s, not the new versions. And then, only G&G and ARMY L85s have long gearboxes, not the ICS L85s. I didn't know the svd had a longer cylinder though. Cool.

But I've got a few things to add. Personally, I chose polycarb piston heads because metal is heavy. That weight is bad for your gearbox, piston, and gears. Same reason I chose polycarb pistons with just a few metal teeth. That weight really wears on a gearbox. The weight on the gearbox is fairly obvious, all of that weight slamming onto the gearbox over and over again will eventually crack and break it. Both the STS and sorbo are ways to fix it. Some people even round the corners of their gearboxes to prevent cracking. Personally, I install sorbo padding. Not only does it protect your gearbox, but most of the time, it will also correct your AoE, which will help your piston last 1000s of rounds longer than it normally would.

But all that weight on the piston also wears on the piston. The gears are slamming into that first tooth of the piston. Think about it, your piston goes from stopped, to full force in a fraction of a second. That is an insane amount of force on such a small area in such a short amount of time. Having a lighter piston helps relieve some of that force. This is why swiss-cheesing a piston is suggested for high rate of fire set ups. The higher rate of fire is simply a side affect of less pressure on the system from a lighter piston. Not to mention, that polycarb piston and piston head absorb some of the shock that the gears put on the piston, and that the piston head puts on the gearbox.

Of course, there is also a limit to how helpful this is. When using heavier bbs, very often in DMR set ups, a heavier piston, to an extent, is helpful. Just like the heavier bbs, it will transfer energy from the spring into the air, into the bb, better than a lighter piston would. But, metal is still very heavy, and a poly carb piston and piston head is still what I suggest. With ball bearing piston heads, they have enough weight to give the bbs the umph they need. Basically, it means you'll have a higher fps with a heavier piston assembly, but like barrel length, there are diminishing returns.

I also like sorbo cause it's about 20 cents a gearbox, instead of $45 that the sts is. imo, STS is a worse case scenario, just ask steevo about his cracked gearbox.