Mmkay, mmkay...,
I know a LOT has been posted in multiple places on the subject but I can't find exactly how to add effective weight to my aeg piston assembly to get to that magic 100g mark referred to in other threads.
WHAT MY GOAL IS: to build 2 top tier highly accurate long range (better than 300') DMR/sniper aegs.
Current platforms: HK M110A1 and HK417.
I've got an extensive background in mechanics, fabrication, design, and a plethora of tools along with access to a lathe.
The HK417 is currently bone stock. The M110A1 is going through its first upgrade iteration. What I've done thus far is:
Switched the original gearbox with an unused 416-A5 that's been radiused.
Installed a Guarder full bore Bore Up (B-U) kit with nozzle and POM piston head. Corrected AOE with Sorbo on cylinder head.
Installed a 6.02, 455mm polished stainless inner barrel, elvish tac R-hop applied, Modify hard bucking tied onto the barrel.
Partially filled the AZTEC piston with melted lead solder (in an attempt to add weight). How to effectively add significant weight and get to the magic 100g number and not sacrifice my cylinder volume is lost on me.
Possibly an M-120 spring that came out of a Gate Eon 400fps gearbox.
Old brushed off brand high torque motor.
Gate Aster
VFC hop-up with Airsoft Innovations arm and hard concave nub.
Thus far it started at 1.5-ish joules and is now at 2.3-2.4 joules. I'm surmising that the extra compression of the spring because of the added material in front of the piston head bearing assembly has added to the output.
This iteration was to just get it up and running in better than stock form. Although the barrel isn't optimum it shoots pretty well (with some sort of slight spiral) with .40s for what it is now. Fielded it for the first time today and I like the feel. Haven't had time to dial in the current impromptu combination though.
Parts I have or are currently being delivered:
Retro Arms shell
Modify ceramic bearings
Edgi 6.01mm, 455mm stainless inner barrel
Rocket 18:1 gears
Guarder B-U kit with replaced nozzle o-ring [NOTE: the stock Guarder o-ring seal was horrible. A Maxx o-ring is thicker and does the trick.]
Gate Aster (considering Titan II Bluetooth, but for a DMR is it really needed or senseless overkill?)
M-130 and M-150 springs
T-238 brushless high torque motor
11.1 3k mAh Titan battery
Modify hard bucking
Maple leaf 75° MR hop bucking
1) Can I get away with using the standard v2 gearbox cylinder volume to push .40-.48 out to that distance with a high degree of accuracy?
2) Should I be utilizing a v2.5 gearbox to get the volume for that AND piston weight needed to maximize my rifles?
3) As I understand the 2.2 (HK417) gearbox uses std. v2 compression hardware and no one has added an optical FCU to the 2.2 gearbox. Has anyone retrofit a v2 or v2.5 to a 417?
4) In a previous post where 1Tonne mentioned a very heavy spring was used but it was cut, there's no explanation as to why, how much, and off the front or back end...?
5) Piston head design: again, reading that edgi made an aeg piston that was like the BASR pistons with a concave head that promoted better and more immediate sealing. THERE'S NO UPDATE AS TO THE AVAILABILITY OF IT. Communicated directly with them and was told it's only for BASRs. I can produce it myself with enough information, but I need more than what I've read. I used to have a clearance but how can I not find/have access to this info? I may be ranting here...
Anyway, I think you get what I'm looking to do and where I'd like to go. I just need a solid formula to get me close, and maybe some tutelage on the rest.
I know a LOT has been posted in multiple places on the subject but I can't find exactly how to add effective weight to my aeg piston assembly to get to that magic 100g mark referred to in other threads.
WHAT MY GOAL IS: to build 2 top tier highly accurate long range (better than 300') DMR/sniper aegs.
Current platforms: HK M110A1 and HK417.
I've got an extensive background in mechanics, fabrication, design, and a plethora of tools along with access to a lathe.
The HK417 is currently bone stock. The M110A1 is going through its first upgrade iteration. What I've done thus far is:
Switched the original gearbox with an unused 416-A5 that's been radiused.
Installed a Guarder full bore Bore Up (B-U) kit with nozzle and POM piston head. Corrected AOE with Sorbo on cylinder head.
Installed a 6.02, 455mm polished stainless inner barrel, elvish tac R-hop applied, Modify hard bucking tied onto the barrel.
Partially filled the AZTEC piston with melted lead solder (in an attempt to add weight). How to effectively add significant weight and get to the magic 100g number and not sacrifice my cylinder volume is lost on me.
Possibly an M-120 spring that came out of a Gate Eon 400fps gearbox.
Old brushed off brand high torque motor.
Gate Aster
VFC hop-up with Airsoft Innovations arm and hard concave nub.
Thus far it started at 1.5-ish joules and is now at 2.3-2.4 joules. I'm surmising that the extra compression of the spring because of the added material in front of the piston head bearing assembly has added to the output.
This iteration was to just get it up and running in better than stock form. Although the barrel isn't optimum it shoots pretty well (with some sort of slight spiral) with .40s for what it is now. Fielded it for the first time today and I like the feel. Haven't had time to dial in the current impromptu combination though.
Parts I have or are currently being delivered:
Retro Arms shell
Modify ceramic bearings
Edgi 6.01mm, 455mm stainless inner barrel
Rocket 18:1 gears
Guarder B-U kit with replaced nozzle o-ring [NOTE: the stock Guarder o-ring seal was horrible. A Maxx o-ring is thicker and does the trick.]
Gate Aster (considering Titan II Bluetooth, but for a DMR is it really needed or senseless overkill?)
M-130 and M-150 springs
T-238 brushless high torque motor
11.1 3k mAh Titan battery
Modify hard bucking
Maple leaf 75° MR hop bucking
1) Can I get away with using the standard v2 gearbox cylinder volume to push .40-.48 out to that distance with a high degree of accuracy?
2) Should I be utilizing a v2.5 gearbox to get the volume for that AND piston weight needed to maximize my rifles?
3) As I understand the 2.2 (HK417) gearbox uses std. v2 compression hardware and no one has added an optical FCU to the 2.2 gearbox. Has anyone retrofit a v2 or v2.5 to a 417?
4) In a previous post where 1Tonne mentioned a very heavy spring was used but it was cut, there's no explanation as to why, how much, and off the front or back end...?
5) Piston head design: again, reading that edgi made an aeg piston that was like the BASR pistons with a concave head that promoted better and more immediate sealing. THERE'S NO UPDATE AS TO THE AVAILABILITY OF IT. Communicated directly with them and was told it's only for BASRs. I can produce it myself with enough information, but I need more than what I've read. I used to have a clearance but how can I not find/have access to this info? I may be ranting here...
Anyway, I think you get what I'm looking to do and where I'd like to go. I just need a solid formula to get me close, and maybe some tutelage on the rest.
