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The background of my work is that everything remains mobile without much effort. The large separator is also only used for bottles, so it is not mounted directly on the compressor. Unfortunately, most conversions are often pure handicrafts, which exclude any mobility, ...... neither compact or...

Singleloader made in black POMloader

This is my final product. When I fill bottles, I use the separate oil/water separator. I didn't mount it on the compressor to keep everything mobile. The VEVOR sheet metal housing is more suitable for cooling the oil.... YongHeng has installed better high-pressure valves.....so I make a clone...

Thanks my frind!

My modified original AEA silencer (complete interior and exterior new) is a gain for my 50 Cal. The original one only works as an absorber and is extremely loud with my revised Challenger, now with chambers and jacket outlets..... it`s ok. Bigger Cal. more Problems:D

Update: I made a new inner life for the original AEA silencer. I hope it works better. The inner Diameter is now 14.5 mm against the ori 16.0mm. diameter is. I hope I can test it tomorrow and make a video.

Yes.

The material is the same on some compressors. The brown rings for the 2, Stage. I dont ask for spareparts...i ask for the type of material.

Normally I zero at the point where the projectile, with my force settings, goes above and below the laser line of the scope. Not somewhere you want to go. Before that, I set my scope mount and the turret to zero.

Any inert mass can stop projectiles. Sand... Rubber mulch or liquids. The decisive factor is what is well applicable in a bullet trap. I think Rubber mulch is the best.

Does anyone know what material the brown high-pressure sealing rings are made of? Delrin or Teflon or another plastic? Since spare parts are often not available, or with a waiting time, I want to make my own in stock. I think white Teflon is too soft. The brown plastic feels harder when it comes...

Update......... I'm still waiting for the fans and the separator. The water pump was mounted in the compressor housing. So a compact mobile system

Here's my solution to the heat problem. Coolers and separators are still to come. The water pipes are brazed directly to the air pipes for better heat transfer. The engine, the first stage and the oil are also cooled very well. Simple, clean and mobile. Some conversions seem a bit to playful to me.

Here is the video.........with silencer. Recordet in Holland.

Today I did a few test shots with 250 grain slugs ........ my FX Pocket v2 was no longer able to measure the FPS, so I was probably over 1200 FPS (Subsonic) and the rifle was incredibly loud (with silencer), so I could only make a few shots here in my company. Before, the hammer spring was...

I can fire 10 shots at 1100 fps with 250 grain slugs before I get under the set 190 bar regulator setting. I want 1010 fps, so there should be 12 stable shots inside. This weekend I was unfortunately only able to measure the speed and will deliver the hit pattern at 100 mtr as soon as possible...

I'll test next weekend. First of all, I can say that it has become brutally loud, despite the silencer and seems extremely powerful(y)(y)

So, I set out to improve the Challenger Bullpub Cal.50. The changes are: Adjustable and harder hammer spring, all sliding surfaces polished. Inside polished barrel with new 15 degree crone Valve with 1.5mm more stroke and weaker returnspring. HumaAir regulator with additional power plenum...

Black POM......and it´s just pressed in....POM can not glued, that would not be liable

Back in Germany...... and here is the new valve and fits. Now with a 7mm bore instead of 4.8 in series production. The valvepin is made of tungsten for extra weight, also centering / sliding discs for the spring to prevent tension due to adjustment., I can only test it with the 40 grain slugs...