Imagine getting shot with this sucker?

[Rugger_can]

Your welcome to build a gearbox that can shoot that hot, but It would not be "field-able".

[Shooting Addict]

Originally Posted by Hairu

doesnt matter how fast a plastic bb is flying its gunna shatter when it hits a hard surface

You forgot about Jay's .28 silica BB's those suckers wont break.

[Azathoth]

I havent gotten close to the magic 740. Best I've been able to come up with is a ~410 FPS gun shooting .43 BB. or about ~650FPS w 0.20. Those things are impossible to close the shell on. I had to get another guy to hold the cylinder down and table vice the gearbox in place. I used a long screw driver and had to push with basically my entire body weight to get the spring into the box. Without a second person I wouldn't be able to close the box. Parts list:

Prometheus Cylinder,
Prometheus Cylinder Head
Prometheus Nozzle
Prometheus Tappet Plate
Prometheus Triple torque gears
Prometheus Aluminum piston head
System supercore piston
Airsoft Surgeon stage 6 spring
G&P Gearbox shell 8mm
Kanzen 8mm ceramic bearings
G&P hopup unit
TM barrel
Systema spring guide
Prometheus Cut off lever
G&P Switch
AJAX STS
Systema Magnum motor
11.1 Flightpower pack 4200 mah 40c continuous.

Hopup teflon mod
Cylinder head mod.

In the future i might try this again but with a stock TM gearbox shell and a bore up kit. Still looking for a not damaged TM gearbox shell to use.

[Styrak]

Use a V3 or a V6!

I hope you're not trying that with a V2.
Oh wait I just read you are...

[FOX_111]

Acuracy and range would be non-existant. No hopup will cope with that. And no hopup mean no range. It would be basically a really expensive BB gun that is worth shit for acuracy.

[iamrock19]

Originally Posted by Hairu

doesnt matter how fast a plastic bb is flying its gunna shatter when it hits a hard surface

well if you have a 200 fps airsoft , even if you use low quality .12g bb's it's not gonna shatter.

[krap101]

There was something like a tbl or something, where you tilt the barrel upwards or something, so the bb "rolls" off the top of the barrel to give it hop. It's supposed to be really hard though.

[andrew5826]

if you make one dont forget to meld 2 m150 springs together.

[Kid]

Originally Posted by FOX_111

Acuracy and range would be non-existant. No hopup will cope with that. And no hopup mean no range. It would be basically a really expensive BB gun that is worth shit for acuracy.

Good point.

I wish Tanio Koba would make some barrels with a lighter twist for guns with higher FPS.

[Azathoth]

Originally Posted by FOX_111

Acuracy and range would be non-existant. No hopup will cope with that. And no hopup mean no range. It would be basically a really expensive BB gun that is worth shit for acuracy.

Actually you are kinda right. I found that the range was ass terrible with light BB's (duh) shooting this kind of gun with .43 is like shooting canada limits with a .25 or .23. In Russia they shoot .87 metal BB's. You can put hopup on the BB's but you need to use hard rubbers, hard nubs, and sturdy strike arms. When I can get some 0.8 styrene BB's i'll rebuild this gearbox. Personally I suspect the optimal weight is somewhere between 0.5-0.6 and I havent ever seen BB's sold at those weights.

Oh BTW AJAX STS does work VERY well with the V2. I didnt game or shot much beyond a couple thousand rounds with this but there was no damage to the gearbox shell. I just got a cracked V2 from thenooblord and I will do the same experiment with a cracked V2 and STS.

I should amend my parts list add

Prometheus Hard rubber & Nub
CNC metal strike arm.

Originally Posted by andrew5826

if you make one dont forget to meld 2 m150 springs together.

I thought dude used 3 melded 150 springs

Originally Posted by krap101

There was something like a tbl or something, where you tilt the barrel upwards or something, so the bb "rolls" off the top of the barrel to give it hop. It's supposed to be really hard though.

I've seen paintball markers with barrels that are not straight but are tilted upwards kinda like hopup. is that what you are talking about?

[krap101]

I think so.. The tippman flatline was well known to have a "hopup" effect.

I found the site I saw it on. It's called a LRB (long range barrel)

http://www.airsoftretreat.com/forums...?topic=86290.0

Defined by wikipedia
The LRB turns the entire barrel into a hop-up system, giving a consistent spin on the BB. The rate of fire on these can be regulated by the amount of air being fed through the system, versus the motor strength of an AEG.