Thread: Rubber wipes in DPT suppressor

Yeah or you found a cool idea from the past and you want find out more about it

Anyone who’s played with large subsonic calibesr knows it’s hard to knock the noise off a 45cal
The difference in noise between a 30 and 45 cal sub is quite a lot

Originally Posted by Bill999

Yeah or you found a cool idea from the past and you want find out more about it

Anyone who’s played with large subsonic calibesr knows it’s hard to knock the noise off a 45cal
The difference in noise between a 30 and 45 cal sub is quite a lot

Just do it and tell us what it did to accuracy. Maybe at equal velocity a heavy .45 cal bullet is not as readily knocked off course by a wipe as a .30 cal one might be. But a .45 cal would make a very telltale thump on hitting anything, so is the wipe worth it unless you're planning to miss?

I agree it's a cool idea from the past, don't mind them having a go at your leg.

Getting super tight suppression for those vital few shots, it's obviously got some application... with an accuracy drawback. Another thought is that silicone wipes may last longer than traditional rubber ones.

look what I found when trolling the internet
sionics suppressor for a mac 11-9. synthetic wipes in there.

Sionics M11-9 Suppressor - SilencerTalk

Originally Posted by csmiffy

look what I found when trolling the internet
sionics suppressor for a mac 11-9. synthetic wipes in there.

Sionics M11-9 Suppressor - SilencerTalk

This image is from your link. Looks like several handfuls of car bulkhead grommets, ???from the first stage of the suppressor??? Weird.

Originally Posted by timattalon

Perhaps not poaching but potentially shooting where one is not supposed to? (EG rabbit control in an area which is too built up for shooting but still you r own property....) Either way, sounds like someone is up to mischief....

Or, keen to have a play! Id like to make a delisle type thing one day when my workshop is set up and I get some time.... Would be fun!

[QUOTE=Cordite;775625]This image is from your link. Looks like several handfuls of car bulkhead grommets, ???from the first stage of the suppressor??? Weird.

Yes, those Sionics suppressors used hollow rivets as an absorbsion system. I don't know that it was any better than anything else on the market. Pistol calibres with their slow heavy compact bullets perform best through wipes. Pre-perforated wipes work best, and neoprene is slightly superior to rubber or leather, but all of them still degrade very quickly (10-15 rounds max). That is perfectly acceptable for covert military use.

[QUOTE=gundoc;775631]

Originally Posted by Cordite

This image is from your link. Looks like several handfuls of car bulkhead grommets, ???from the first stage of the suppressor??? Weird.

Yes, those Sionics suppressors used hollow rivets as an absorbsion system. I don't know that it was any better than anything else on the market. Pistol calibres with their slow heavy compact bullets perform best through wipes. Pre-perforated wipes work best, and neoprene is slightly superior to rubber or leather, but all of them still degrade very quickly (10-15 rounds max). That is perfectly acceptable for covert military use.

@gundoc, have you any advice for someone wanting to give this a try? Iv got a Schultz and Larsen Thunderdome for my .45
Where do you think the wipe would be best fitted? Would a wet wipe (oil) be worth a shot?
Cheers.

[QUOTE=40mm;775633]

Originally Posted by gundoc

@gundoc, have you any advice for someone wanting to give this a try? Iv got a Schultz and Larsen Thunderdome for my .45
Where do you think the wipe would be best fitted? Would a wet wipe (oil) be worth a shot?
Cheers.

Oiled leather works quite well. The wipe needs to be supported on either side by washers, the rear washer needs a hole at least 1mm over bore size, and the front washer needs to be about 8mm over bore size to give the wipe room to open cleanly (assuming 3-4 mm thick wipe). Put a cross slit in the wipe at least 1.5 times bore size, and a 3mm hole punched in the centre. Two wipes work best, one at the front of the suppressor and another inside closer to the muzzle (but still at least 30mm away to avoid too much burning).

[QUOTE=gundoc;775639]

Originally Posted by 40mm

Oiled leather works quite well. The wipe needs to be supported on either side by washers, the rear washer needs a hole at least 1mm over bore size, and the front washer needs to be about 8mm over bore size to give the wipe room to open cleanly (assuming 3-4 mm thick wipe). Put a cross slit in the wipe at least 1.5 times bore size, and a 3mm hole punched in the centre. Two wipes work best, one at the front of the suppressor and another inside closer to the muzzle (but still at least 30mm away to avoid too much burning).

Thanks, will five that a try.

[QUOTE=gundoc;775631]

Originally Posted by Cordite

This image is from your link. Looks like several handfuls of car bulkhead grommets, ???from the first stage of the suppressor??? Weird.

Yes, those Sionics suppressors used hollow rivets as an absorbsion system. I don't know that it was any better than anything else on the market. Pistol calibres with their slow heavy compact bullets perform best through wipes. Pre-perforated wipes work best, and neoprene is slightly superior to rubber or leather, but all of them still degrade very quickly (10-15 rounds max). That is perfectly acceptable for covert military use.

Cheers. I can see one advantage even if not max suppression: easy to pour out and pour in replacements! Imagine it would be fun trying different fillers without spending hours cutting them to shape.

[QUOTE=Cordite;775678]

Originally Posted by gundoc

Cheers. I can see one advantage even if not max suppression: easy to pour out and pour in replacements! Imagine it would be fun trying different fillers without spending hours cutting them to shape.

the article I read on it just after I found the link this morning said they also helped to absorb heat. On a mac 10 it would be a good idea. single shot not so much.
It was also commented on that newer designs were efficient enough not to need them.

Can see the rationality about a lot of complex shaped rubber inside the silencer - after all rubber absorbs a lot of sound energy, converting it into heat - in addition to its absorbing some heat of the blast but metal probably is better for that.

Some silicone rubber is very heat resistant and would make up some nice filler, definitely going to use something like that in my current de Lisle like project.

I have a shot out SMLE that will be dedicated to lead boolits with a 15" barrel. I need to take off exactly 9" of the 24" whippy barrel to allow me to put a 16M2 thread on it, 16mm being the barrel diameter at 9 inches from the business end. The suppressor won't index on the thread so I can thread it with a hand tool. Shame for the rifle as all matching numbers etc, but shot out is shot out.