V2 gearbox upgrade to 500fps

[Nefarious2008]

I am upgrading a v2 gearbox to hopefuly 500fps at which point i will make it semi auto only to keep it within the rules of where I play.

I have put in an Element Max torque gear set, and an Element 160 Spring, this I expected to increase the power to 460-500ish but I got a measly 300fps

The same gearbox with a 100 spring and normal gears produces over 340 fps

Whats going wrong? any ideas?

regards

[Alfer]

Re: V2 gearbox upgrade to 500fps

compression issues is my bet

[Bum_Fluff]

Re: V2 gearbox upgrade to 500fps

what else are you using in the gearbox?

[Kodiak]

Re: V2 gearbox upgrade to 500fps

I'd agree with Alfer. I don't know what to recommend though.

[jagillham]

Re: V2 gearbox upgrade to 500fps

What motor are you using? Maybe it is not powerful enough to make full use of the spring.

[Barny Hamon]

Re: V2 gearbox upgrade to 500fps

That is complete rubbish =], power of the motor has nothing to do with the power of the spring. It affects ROF but not power. What is to blame is probably compression issuses as has been said before. Judging by the fact that you've bought Element stuff which is a chinese clone company id say that you've got a chinese gearbox. Which one have you got? You could get a TM cylinder, cylinder head and pison head and see if that makes a difference.

[Garf3r]

Re: V2 gearbox upgrade to 500fps

its probably a O ring on the cylinder head letting air out, so try get one with 2 O rings

or you could try a tightbore cylinder and tightbore cylinder head

[Nefarious2008]

Re: V2 gearbox upgrade to 500fps

The Gearbox is a JG box, obviouly I have metal bearings etc,
Will try replacing the cylinder and head and replace the piston with a double ringed

Many Thanks to all for their help and will be posting again if it still doesn't work

Regards

[dope_on_a_rope]

Re: V2 gearbox upgrade to 500fps

What gun, barrel length and cylinder, are you running?

[mamba]

If you are using a shorter barrel(363mm below) use type 1 cylinder, vents 3/4 of the cylinder, if you're using a longer barrel (400mm plus) use a type 0 cylinder or no holes. I normally used torque up gears, what ever brand you like and bore up everything, half tooth piston ( I Normally used deepfire titanium coated half tooth pistons. I can run SP150 to 530fps +/-2 fps. by the way the TM EG 1000 can easily pull the spring and I am using a 550mm 6.03 tight barrel.





My semi and semi only SAM R with SW cheetah.




Batter options Ninh or Lipoly.


By the way I am using a stock G&P hop up chamber but change the hop up rubber to prome hard type (red) and a secret airsealing technique.

or you could try a tightbore cylinder and tightbore cylinder head[/QUOTE]

Where can you get this stuff, first time to come accross with this. Or you misquoted it.....Bore up cylinder, bore up cylinder head and bore up airseal noozle's what I know, this have much higher air volume compared to stock, my 2 cents.

[Nefarious2008]

Re: V2 gearbox upgrade to 500fps

Cheers to all again , I have managed my task I bought an A&K SPR, Max torque gear set and a Guarder 170 spring running at 495 at the mo before I start on the barrel of cause I have restricted it to semi auto.

regards

[mamba]

Re: V2 gearbox upgrade to 500fps

Cheers to all again , I have managed my task I bought an A&K SPR, Max torque gear set and a Guarder 170 spring running at 495 at the mo before I start on the barrel of cause I have restricted it to semi auto.

regards

SP170 at 495FPS, ma men you have a huge airleak.

[The Keeper of Secrets]

Re: V2 gearbox upgrade to 500fps

No he doesn't.

The SP170s are designed to come out at just above 500fps, so losing 5 doesn't constitute a "massive airleak".

[Gaffa]

Re: V2 gearbox upgrade to 500fps

Also, to add, motors do have an impact on how much power a gun will have... Why do you think the motors G&P makes are called M120, M140 and M160 motors? Because they are designed to pull springs up to that certain power level.

The motor in your SPR should be plenty sufficient though, those new A&K's are absolutely fabulous as they're now using much better motors and have awesome trigger response. Compared a stock A&K SR-25 with an upgraded ICS AK-74, and the SR was much quicker in trigger response.

Also, having a tightbore barrel will/ can actually increase the fps. The barrel's I've been recommended are the Madbull 6.03mm Version 2's - as although they state 6.03mm, they have been tested to 6.01mm, apparently. But as far as truth goes, I'm not sure whether to believe it or not! Hehe.

Anyway, I've heard they would give 30 - 50fps increase.

Regards, Matt.

[The Keeper of Secrets]

Re: V2 gearbox upgrade to 500fps

Motor ratings are there to let you know how powerful a spring the motor can pull. It does NOT affect the power of the gun.