How did I miss this? I think new users have to be manually approved and therefore there might be a delay between post date and the day it is actually visible. Hello everyone, I am from Asia and I have been a fan of this forum. Recently, I have started to try DIY projects. As English is not my nativ...

In the past few days I've noticed that SpudFiles pages are taking about ten seconds to load, it's the same from different locations and with different devices, is everyone else experiencing the same?

Much faster now, cheers!

I still think that the compression ideally comes from a fixed source, like a spring or closed gas piston - because a hybrid combustion gives a lot of energy disproportionate to the compression of the gas mixture before combustion, and this energy can be used to reset the compression mechanism for re...

Welcome to the forum and interest project you have in mind. In order to get the best advice it would be helpful to share what sort of tools and materials you have available, what is relevant for a fully equipped CNC machine shop will not be if you are epoxying plumbing fittings together, and your bu...

There was a post on reddit (rather ironic in an of itself) lamenting the loss of the hobby forum . This phenomenon seems to a general one as social media - including reddit - have displaced them when it comes to how people spend their time online. Specific facebook groups and subreddits aren't reall...

Shame it's so quite in here. Ah well, the tinkering continues and holes are still being blasted though innocent cans :D Here is a second version of the flare gun cartridge with a steel chamber and aluminum piston. Fitted with a 6 inch long 0.75 cal barrel it's pushing empty 12 gram CO2 capsules at j...

"There may not be poets, but there will ALWAYS be poetry" :) Well said :D Here is what the new design looks like internally, roughly to scale: https://i.imgur.com/JdRFF9d.png The piston locking balls are now kept in place with a central ball, with the latter's centerline slightly biased to the rear...

Great stuff, it never ceases to please me to see your repeaters functioning so well! I look forward to the new project

Some interesting developments found on YouTube, an atmospheric pressure combustion cartridge gun that uses hydrogen and oxygen generated by electrolysis, and on top of it firing an "explosive shell" that also contains the same gas mixture with a piezo ignitor :o https://youtu.be/WlArhyaR8y8 https://...

I've done some work with a testbed cartridge for 12 gauge, here is roughly what it looks like internally: https://i.imgur.com/CO2AO0R.png This is just a proof of concept, the idea was to have a balanced spool (orange) within the chamber that retains pressure, in this case filled through a butane lig...

I love the concept! The only thing I would change is reduce the diameter of the piston to allow a higher pressure to be reached with the same force applied to the bolt.

hectmarr wrote:I made some numbers and the weapon would have a slightly strange shape, a fairly short barrel and a fairly long body.

Look at rifle caliber bolt action pistols like the Nosler Model 48, they look pretty sweet.

C'est étrange, avez-vous des liens vers vos réponses ? Parfois, pour les nouveaux utilisateurs, une approbation manuelle des administrateurs est nécessaire.