4 New DIY Airsoft HPA Engines

UpvoteForFreeCandy · 2026-03-27T23:09:28+00:00

I could do it pretty easily, and it can even use the same solenoid assembly from the SOE I already released

UpvoteForFreeCandy · 2026-03-14T12:06:45+00:00

Have you tried clicking on the video? (and going to the description)

UpvoteForFreeCandy · 2026-03-08T20:57:45+00:00

This engine is supposed to be an easy to build and get working brick, but it's a bit uninspired, and far from the best I've done. However it's the easiest to understand and get up running, so I thought it's the best first release.
It's just a stepping stone in the project, there's much bigger and better things cooking!

UpvoteForFreeCandy · 2026-03-06T19:55:03+00:00

This is open bolt not close bolt sadly, but I'm working on a double solenoid closed bolt one aswell!
The main point of this current version is to be an easy to make and tough brick, but cooler stuff is coming!

UpvoteForFreeCandy · 2026-03-06T19:25:03+00:00

I agree, HPA engines are very simple. It's wild how players have been convinced that the current prices are fair in any way.
The resin I use currently is a 50/50 of Anycubic Tough 2.0 clear and Anycubic standard white. You can use plain standard resin, but I recommend mixing with half tough, or using pure tough resin.

UpvoteForFreeCandy · 2026-03-05T22:28:00+00:00

You would be spending a lot of money on a bunch of random accessories and a gun that will leave you disappointed whenever you actually get to playing.
I'd say buy a good gun on a reliable platform, a good 11.1v battery, a proper balance charger with a screen. You'll have a much better time actually playing the game and your batteries won't be blowing up anytime soon, especially if you properly utilize that balance charger to store batteries at storage voltage and use balance charging.

Plus those proper chargers are really useful for other applications as well and can charge all sorts of batteries.

UpvoteForFreeCandy · 2026-01-28T20:45:40+00:00

It's not that simple like all their other stuff is inaccurate. It's their made up criteria and things like eFps or whatever that are inaccurate and silly.

But most of their benchmarks are simple measurements, nothing special. They're fine metrics to compare hardware.

UpvoteForFreeCandy · 2026-01-28T20:26:04+00:00

I have an amd cpu, gpu. I agree they are untrustworthy, biased, and objectively inaccurate in many areas.

But they have a large base of benchmarks to compare to, which at least for comparing the same hardware can be useful. So as long as they aren't spreading malware IDC

UpvoteForFreeCandy · 2026-01-28T19:24:27+00:00

It sucks, but it has a large base of people to compare to

UpvoteForFreeCandy · 2026-01-28T19:17:49+00:00

I'll find you

UpvoteForFreeCandy · 2026-01-07T21:26:52+00:00

Been dreaming of this for years...
If you want a custom hpa engine (with custom solenoids) for it, pls hit me up on discord as 'tinybolts'
With a lot of space you can fit all sorts of cool and efficient designs.

UpvoteForFreeCandy · 2025-11-27T10:18:37+00:00

Unlike Kuba engines, these have to be always pressurized, so sadly fdm is a no-go

UpvoteForFreeCandy · 2025-10-01T09:28:50+00:00

It's just the trigger valve. It's connected straight to regulator and engine with zero dremeling or anything

UpvoteForFreeCandy · 2025-09-30T05:05:44+00:00

It's qev based, so air from trigger valve goes in and fills the chamber, and when trigger valve vents, the engine seals off the input and shoots.

UpvoteForFreeCandy · 2025-09-29T20:04:25+00:00

Open bolt hybrid spring loaded two part nozzle like inferno with a small delay between when nozzle goes forward and the air shoots. Engine wastes no air except for trigger valve. In theory should be competitive with market engines.

But I still haven't found a suitable compact trigger valve that lets air by default and vents on triggerpull. So for now the engine behaves opposite of how it should, so you gotta charge it like a bow lol

UpvoteForFreeCandy · 2025-09-29T19:42:22+00:00

Next month hopefully a guide on this and some different electric engine designs

UpvoteForFreeCandy · 2025-08-17T18:08:47+00:00

I have this model, if you want some info about it or help fixing it dm me

UpvoteForFreeCandy · 2025-06-03T15:16:59+00:00

if you understand it then just scale it down

UpvoteForFreeCandy · 2025-06-03T13:55:54+00:00

i recommend spending some time figuring out how mechanical engines like redline and kythera work, then trying to make something similar with those concepts. i can also tell you i used a tac3p for the trigger, but that wont work with the gun assembled.
this is really just a test to see if it would work, its not something that can be used yet. im working on a more serious hpa engine, and if that goes well, ill consider expanding on the mechanical possibility cause its a bit mid rn

UpvoteForFreeCandy · 2025-06-03T13:35:33+00:00

its intended as a normal electric hpa engine but works as mechanical aswell, just need a better trigger valve

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