The Great Sumatra 2500 suppressor destruction test

[bduares]

The Great Sumatra 2500 suppressor destruction test will begin today, after it's a civilized time to fire the thing off without waking up the neighbors.

I have 16 moderators ready for testing, some of which are variants printed in different infill percentages, some of which are variants printed on different printers. Example: some of Mike's mod files were absolutely hated by my Neptune 4 Pro, and came out with lumpy textures and banding where they had the text on them. The banding and lumpiness went the entire way around the printed mods. My Anycubic printer printed them out fine. It was an interesting find that the way some brands of printers read the slicer files had differences from other brands.

Columns left to right:

1st column: Mike's Archangel mod and tough Archangel remake in 100% infill. The remake was hated by the Neptune, but I printed it out anyway and then reprinted it on the Anycubic
2nd column: Kent's fluted mod. My original print with the missing end cap which survives being shot through, and 2 copies with end caps, one at 100% infill and one at 50% infill.
3rd column: Kent's first Ruger style remake mod and Buck Rail's Diana Bandit mod in polycarbonate print
4th column: Mike's Ember mod printed on the Neptune, which didn't like the file, and Kent's second and final Ruger style mod
5th column: Mike's Standard .22 mod, Pete's shorter and long mods
6th column: Mike's Ember printed on the Anycubic, and finally Pete's Tesla mod printed on the Neptune. I have another Tesla printed on the Anycubic already attached to the Sumatra.

I will be firing 218-25-RF-D6 cast slugs weighing 23.4 gr. which the Sumatra shoots at 1171 fps (71 fpe) with a moderator attached when the power wheel is dialed 4 clicks back from max. The last test of 4 unpainted mods resulted in destruction of all 4. These have all been painted with Rustoleum 2x Ultra Cover primer & paint in Satin Black. 

More to follow this afternoon

[bduares]

I have the Sumatra tuned all the way down as slow as I can make it shoot. It is now set up to hit 317 m/s or 1040 fps with 23.4 gr. slugs, so it can shoot subsonic. This should make the test more interesting in determining what the suppressors sound like.

[bduares]

Gun: Seneca Sumatra 2500. Slug weight: 23.4 gr. Low power 1040 fps or 317m/s 56 fpe. High power 1200 fps 74.8 fpe. I was having a little trouble with the magazine because the slugs were fresh cast and not sized, and my magazine o-ring mod is not all the way finished and get's in the way of things a bit. These suppressors have all been painted with Rustoleum 2x Ultra Cover primer & paint in Satin Black.


I started things off at low power with Kent's fluted suppressor at 50% infill. Then the same suppressor at 100% infill, then the 50% at high power. It exploded. The 100% infill survived. Interestingly, the 50% infill was quieter than the 100% infill version.

All other suppressors are at 100% infill.

Next was Mike's Archangel. At low power it is ok. At high power it exploded.

Next up, Kent's modified Ruger design. It survived low but on high power it exploded.

On to Kent's upgraded modified Ruger design. It survives low and high power.

Mike's Archangel heavy redesign. It also survives low and high power.

Pete's Tesla design. It survives low and high power.

Pete's short and long designs also survived low and high power.

Mike's shorty Ember design also survives low and high power. Very surprising! Quiet too.

Mike's Standard .22 design also survived low and high power.

Buck Rail's Diana Bandit suppressor in poly carbonate also survives low and high power.

Then my original print of Kurt's fluted design with no end cap. It still survives low and high power.

[OldCrow]

Impressive Jared!

You remind me of myself a bit.  Lots of work went into that test.  Thank you very much.  You taught me something about why they fail.     Greatly appreciated!

Mike

[bduares]

A couple of the interesting things I learned from the test were:

The paint seemed to strengthen the prints to the point where previous unpainted prints exploded while painted ones survived high power. Yay for solvents!

At least at low power (50 fpe) 50% infill printed suppressors were quieter than 100% infill prints. Perhaps the extra empty spaces inside them quieted them down a bit.

Your Ember was the smallest of all the suppressors I tested, but it was not the loudest by far.

[subscriber]

Thanks for doing all that work, Jared.

Which moderator had the best sound reduction/tone quality at high and low power (could be different ones)?  I have my own idea, but then I am biased.