Project Summary

The great advantage of the my system is easy way to adjusting power and rate of fire. I can be done in a few seconds. You do not have to take off the gearbox from the Body. FPS (BB velocity) directly dependent on the gas regulator pressure. The same gun is capable to firing high-weight BBs at higher velocities at battlefield - you have to increase pressure on regulator.
System can be powered by HPA (High Pressure Air) or CO2. HPA is a higher pressurized gas than CO2 so it required other tanks.

 

 

 

Please note, that very important things is air line that connect Conversion and Solenoid. Wrong choice of these elements causes a drop in power.
Given in the tests: length "20cm + 65cm" is the value that is needed to place the control system (and solenoid) in a backpack on your back. If you want to achieve adjustment increase you should shorten the hose. If you use a M4/M16 rifle or some kind of sniper rifle use standard (not telescope) stock to mount the solenoid. Probably you'll be able to hide there the battery supply system.

Muzzle velocity using standard airsoft AEG:

No.	Configuration/weapon	Barel Lenght [cm]	BB weight [g]	Velocity [FPS]
1	M4 - V2 Gearbox	Short - 18cm	0.2	374
2	M4 - V2 Gearbox	Long - 40cm	0.2	420
3	M4 - V2 Gearbox	Short - 18cm	0.25	319
4	M4 - V2 Gearbox	Long - 40cm	0.25	363
5	M4 - V2 Gearbox	Short - 18cm	0.88	125
6	M4 - V2 Gearbox	Long - 40cm	0.88	142
7	Beretta CO2	Very short - 12cm	0.2	350
8	Beretta CO2	Very short - 12cm	0.25	307
9	Beretta CO2	Very short - 12cm	0.88	179
10	MP5 CM049J	Short - 22cm	0.2	423
11	MP5 CM049J	Short - 22cm	0.25	385
12	MP5 CM049J	Short - 22cm	0.88	167

Muzzle velocity with Long Barrel (40cm):

No.	Configuration/weapon	Air line lenght: Conversion<->Solenoid	Pressure [BAR]	BB weight [g]	Velocity [FPS]
1	AEG to HPA Mod	20cm + 65cm	6	0.2	270
2	AEG to HPA Mod	20cm + 65cm	8	0.2	340
3	AEG to HPA Mod	20cm + 65cm	10	0.2	380
4	AEG to HPA Mod	20cm + 65cm	14	0.2	420
5	AEG to HPA Mod	20cm + 0cm	6	0.2	310
6	AEG to HPA Mod	20cm + 0cm	8	0.2	370
7	AEG to HPA Mod	20cm + 0cm	10	0.2	420
8	AEG to HPA Mod	20cm + 0cm	14	0.2	472

Muzzle velocity with Short Barrel (18cm):

No.	Configuration/weapon	Air line lenght: Conversion<->Solenoid	Pressure [BAR]	BB weight [g]	Velocity [FPS]
1	AEG to HPA Mod	20cm + 65cm	6	0.2	240
2	AEG to HPA Mod	20cm + 65cm	8	0.2	270
3	AEG to HPA Mod	20cm + 65cm	10	0.2	300
4	AEG to HPA Mod	20cm + 65cm	14	0.2	325
5	AEG to HPA Mod	20cm + 0cm	6	0.2	250
6	AEG to HPA Mod	20cm + 0cm	8	0.2	310
7	AEG to HPA Mod	20cm + 0cm	10	0.2	330
8	AEG to HPA Mod	20cm + 0cm	14	0.2	360

More tests soon. So stay tuned, to be continued...