Luke31 wrote: ↑

Sat Nov 27, 2021 7:26 pm

If airplanes or drones were ever used in paintball these rounds could be used as flak fire lol.

This would still be effective at blinding drones. I doubt any of their camera lenses use wipers

I just finished making the v3 based on hectmarr's design. This is the final arrangement: Regulator nacrt-Model01-00.png The body is 2011 Aluminum, just so it would be easier to machine. Both ports are threaded for G1/8 RegV3AlCuBiPb.jpg Piston is 5,8mm steel rod with 3x1,5mm (6mm OD) O rings RegV3As...

It would just involve adding a friction component to the equilibrium a freeze frame in time, one when it's fully open one when it's closed but it also involves an arbitrary increase in spring compression when it's open. That's how I've been trying to do it, just to get an idea at what pressure the ...

It is not so difficult to make the air passage channel. Thanks for posting the pictures. Machining it from a solid block requires a different solution though, this is what I'm working on right now: Regulator nacrt-Model01-00.png I agree with your assumption of friction doubling for a piston of doub...

This last picture with the 2 O ring piston would be rather hard to fabricate... Brass could be drilled and then soldered shut, leaving the 0,75mm diameter path for the air. I plan on making the regulator body out of AlMgSi0,5 stock (6060 Al) so this is not an option. Note that friction increases a l...

This little pressure regulator, I made it. That looks really nice! I like how the piston is acting like a spool valve, making the output pressure depend only on the spring force. The spring must be very light for 3bar output. Does the input HP pressure actually have no effect on the output LP press...

The issue here (for me at least) is why are you designing a pressure regulator? I’ll be going off topic here, but will give you an answer. You could ask the same why I designed and made my last airgun, the M98b. It was a very complex project involving a QEV design using a piston with a built in che...

I think these are really simple equations, it's not like I'm writing out Navier-Stokes here :D I just don't trust myself in correctly assuming the surfaces on which pressures are acting upon, because I literally have no experience with solving this kind of problems. My major deals with incompressibl...

Hello everyone! I finally found some free time after finishing my undergraduate degree and I'm starting to get back into this hobby. One thing I always wanted to make is a pressure regulator to fill my creations from a external tank. Currently I have a 2l fire extinguisher to use for this purpose. M...

Hey if you think you can reproduce this, go ahead. I couldn't find my last code with m/s to km/h and fps conversion so I'm posting the original one I submitted in paper. Dim A As Byte , Brojac As Word , Broj As Long , Ukup As Long , Time As Single , V As Single , Targ As Iram String * 6 $crystal = 2...

I highly recommend carving a stock out of a block of wood. Just make sure you're not using the lowest quality wood. Don't repeat my mistake of putting a lot of work into a wooden stock and then have the wood deteriorate after a few years ;) The best way of carving out the cavities would be with a ro...

Jack that really reminds me of the first ballistic chronograph designed by Kiryako Arvanetakis. I've had an entire segment about him in my presentation ;) Nice to see the design hasn't been forgotten, or perhaps reinvented? Jimmy, the whole point of my graduation project was using the things I was t...

Last week I've defended my graduation project and got an excellent mark so I guess now I can finally share this project with you. It all started 6 months ago with me choosing the project "Microcontroller based projectile speed measurement". The first thing on the list was designing a frame that woul...

Nice list, I like your style :D The only one I didn't make is the M107. If you're going for a replica straight off the bat, I have to recommend the L96. It has a wide chunky stock you can fit a large air tank into and there is a lot of room in the front for a working magazine feed system. The rifle ...

To answer both of your questions... my mill is actually a hand router. Bosch POF 1200 AE to be precise. I can "mill" stuff only because I've built a special table for it :D I'm currently looking into replacing the paper cones with shrink tubing. However with the ever restricting gun laws in this cou...