Evanix Rex reflex inserts for shroud

[subscriber]

Something like this tunable configuration:



From here:  https://www.gatewaytoairguns.org/GTA/index.php?topic=203825.msg156387958#msg156387958

Then scroll down to see the configuration shown in the above image.

[Clicky]

fascinating, some of these little details! I probably could've been here more, sooner. I've missed a lot

Has anyone here tried allowing the baffles to slide freely inside a tube, so they can find their own spacing? Maybe damped with silicone grease & spring-loaded drags

[subscriber]

I know of a number of people who have contemplated sprung baffles.  My concern is slamming them into the end of their travel, and making noise; then breaking them.  As for active elements, these videos might amuse you.  Second video is slowmo, and shows more:






Hardware made and Videos owned by GTA Forum owner, Travis.

[Clicky]

Then this really is the place where I should have been!

That bullfrog LDC is funny! I'm actually tempted to print an actual bullfrog to fit onto my Daisy 822 & have the diaphragm set at the throat so it looks like the real thing. The 822 will often make a sort of croaking noise while pumping, if it gets a bit dry

I wasn't thinking of using springs to control the fore/aft position of the baffles, but to help keep them from sliding around. More like spring-loaded skis that ride along the inside surface of the outer tube

And each sliding baffle would need to have a large mass, so it doesn't react too quickly

[Clicky]

I think I'm going to call it on the pistol. I really want any moderator experiments to be done on a more purpose-built platform than this. It's just too annoying working on this thing while ignoring a few things!

So I decided to try a single baffle, single chamber. That's not working as well as I was hoping, but I'm not changing it out because it does work better than stock. And I think the muzzle brake is going to actually work properly. I'm going to switch gears here and just go for looks now

Part of the reason is my idea for 'temporarily' holding the rivets with loctite retaining compound doesn't actually release with heat like I had thought it might. And I think I may have melted the printed insert to the tube...

Anyways, case will have a storage compartment cut in, a bit more 3M outdoors tape slapped all around and I'm posting this for sale

But 1st some target shooting to see if it's really working right, get a better idea on how poorly this moderates & hopefully get a group worth showing on the listing

I have some loose barrels that need to get put to work, and it's about time to try out one of my valve ideas as something that works with a trigger, instead of hitting it with a ballpeen hammer

[subscriber]

That thing looks purposeful.

[Clicky]

That thing looks purposeful.

Even better in person. I'll get some pics of the range when the weather gets a bit nicer. Snowing right now

[Mr.P]

I did a modification to a previous design and printed yesterday.

In the two photos below, you can compare the new design to the old.  The old was not especially quiet.  On the image of the older print, I have circled the main areas that I changed.   The extensions are now shorter and taper to a thinner edge. 

Clearly more effective than both of my previous designs. 

When these are fresh off the printer, it’s interesting to force a lung-full of air through these.  You can clearly feel the resistance when you blow in the intended direction (and lack of resistance when pushing air backwards). It’s a strange sensation -  always makes me feel like I have to clear my throat because it is oddly similar to breathing when there’s a lot of phlegm in your lungs.

[subscriber]

The proof of the pudding is in the eating.  Next installment; results.  I wonder how different the new one will be from the previous one.

[Mr.P]

It is noticeably quieter.  Deeper pitch as well

[Clicky]

Nice!

I'm really wishing I'd went with setscrews...

But I'm beginning a scratch built in .32 caliber

It's just a valve test, so I'm not so sure I should be doing much for moderator design on it. I ought to just go with a threaded adapter to run the DonnyFL Emperor

But later, I want a custom tank that can hide inside a straight stock like a early 1900's style and that's when I'll be looking at a reproduction of antique moderators, but with modern baffles inside

[subscriber]

It is noticeably quieter.  Deeper pitch as well

Did you do a "double-blind" in changing back and forth between two configurations in your above post, more than once?  If so, the effect of such a subtle change is amazing.