Aeg cyma ebr to ebbr upgrade

[Devgru Neo]

Hello there. I just wanted to kindly ask, I've noticed there are several airsofters that upgraded their cyma ebr into an electric blowback, I believe connecting a rope/string to the piston and the bolt. I couldn't find tutorials though. Could please anyone gently explain to me how to do it myself? 

 

[Cocha]

Following this thread, I'm interested

 

[Lozart]

The only thing I can think of is that they've butchered a Tremors kit into the Cyma EBR Mod 1 that has an M4 buffer tube. Even then, it would need some work because it's not the same gearbox at all.

https://www.modify-tech.co/products/tremors-2-recoil-system-for-m4-carbine-1

Also - EBR in this case stands for "Enhanced Battle Rifle" and is nothing to do with blowback or recoil.

 

[Devgru Neo]

The only thing I can think of is that they've butchered a Tremors kit into the Cyma EBR Mod 1 that has an M4 buffer tube. Even then, it would need some work because it's not the same gearbox at all.

https://www.modify-tech.co/products/tremors-2-recoil-system-for-m4-carbine-1

Also - EBR in this case stands for "Enhanced Battle Rifle" and is nothing to do with blowback or recoil.

Thank you good sir 

Yeah I know what an ebr means, I just wanted to replicate the sliding bolt, I'm studying a way to recreate the blowback as well, even though I'm no expert. Guess the easiest answer is a lvl 3 ra tech ebr

 

[Devgru Neo]

That's basically what I wanted to replicate 

 

[GiantKiwi]

14 minutes ago, Devgru Neo said:

Good luck with that, 16 years is a long, long time.

And no, RATech Lvl3 EBR is a GBBR, there is no way to retrofit an aeg gearbox into it.

 

[Devgru Neo]

I know ra tech is a gbbr, I meant to get a recoil action on a ebr. Never had the idea to swap gbbr internals within an aeg. Anyway thank you 

 

[Anonymoose]

I know ra tech is a gbbr, I meant to get a recoil action on a ebr. Never had the idea to swap gbbr internals within an aeg. Anyway thank you 

The gun in that video is just modified to have a moving bolt, not a blowback system. From what they describe, making the bolt move like that is relatively simple with a bit of engineering.

To have an actual blowback effect (like an NGRS) you need an additional weight in the mix somewhere which is a whole other bit of engineering in itself, unless you find a way to transplant an NGRS/similar gearbox into your desired gun.

No doubt it's possible, but probably not a DIY job either.

 

[Devgru Neo]

The gun in that video is just modified to have a moving bolt, not a blowback system. From what they describe, making the bolt move like that is relatively simple with a bit of engineering.

To have an actual blowback effect (like an NGRS) you need an additional weight in the mix somewhere which is a whole other bit of engineering in itself, unless you find a way to transplant an NGRS/similar gearbox into your desired gun.

No doubt it's possible, but probably not a DIY job either.

Thank you, did you get how it's done? I'm not quite sure I did

Talking about just the bolt slide 

 

[Anonymoose]

Thank you, did you get how it's done? I'm not quite sure I did

Talking about just the blot slide 

They said they cut a slot in the gearbox and used string attached to the piston to link to the bolt.

Personally, i would use solid (but sliding) linkage instead of string but as said before this isn't really DIY and is more engineering.

 

[Devgru Neo]

They said they cut a slot in the gearbox and used string attached to the piston to link to the bolt.

Personally, i would use solid (but sliding) linkage instead of string but as said before this isn't really DIY and is more engineering.

Got it, thank you so much. So maybe a good tech can handle it? 

 

[Anonymoose]

Got it, thank you so much. So maybe a good tech can handle it? 

Possibly, but it's more fabrication/engineering to do it well than typical teching. Probably needs some modification to the bolt too, and it may well impact reliability and eat gearboxes.

The cost is another aspect to consider. If paying someone to do it you could get into hundreds pretty quick.

 

[Devgru Neo]

Possibly, but it's more fabrication/engineering to do it well than typical teching. Probably needs some modification to the bolt too, and it may well impact reliability and eat gearboxes.

The cost is another aspect to consider. If paying someone to do it you could get into hundreds pretty quick.

Got it, thank you so much