Endcap won't stay tight

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CMV
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Endcap won't stay tight

Post by CMV » Sat Jan 21, 2017 5:39 pm

After a 10 rd mag, the suppressor needs re-tightened. Ready to Cerakote but haven't had this problem before. Should I make a facing cut leaving only a small shoulder around the threaded hole?

Or am I doing it wrong & need to leave the wave/spring washer in place on the 22/45?

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fishman
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Re: Endcap won't stay tight

Post by fishman » Sat Jan 21, 2017 8:07 pm

Why not just a drop of loctite?
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Re: Endcap won't stay tight

Post by doubloon » Sat Jan 21, 2017 10:42 pm

loctite or plumbing tape

varying amounts of clean up with either
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Re: Endcap won't stay tight

Post by alordnapa » Sat Jan 21, 2017 11:28 pm

I would try an O-Ring set down all the way against the barrel thread relief. It would crush and add a bit of friction, although it may not last for a lot of removal cycles. Fortunately, you can buy them by the bag! My hunch is that your end cap thread major diameter is a hair oversize, and there is not much to be done about that besides cutting a new one.

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Re: Endcap won't stay tight

Post by a_canadian » Sun Jan 22, 2017 12:21 am

Is that some sort of barrel threaded adapter over either a skinny barrel liner or a barrel end that's been turned down to fit it? Can't quite make out what I'm seeing there. If it's an end cap on the gun itself, what about having one made with a slightly larger thread OD, just a bit fatter so the suppressor threads on snug? Of course if the threaded portion with the 4 holes in it isn't just a small part that's not going to work... but it really seems like it's a soda straw barrel with some sort of threaded adapter.

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Re: Endcap won't stay tight

Post by T-Rex » Sun Jan 22, 2017 9:26 am

I would try taking a facing cut, on the suppressor adapter, but leave a small shoulder in place.
The materials are most likely heating up and pushing each other apart.
A small shoulder should help alleviate some expansion.
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Re: Endcap won't stay tight

Post by Hasdrubal » Sun Jan 22, 2017 9:27 pm

a_canadian- looks to me like one of the Ruger Lite models of their 22 pistol, aluminum sleeve over a tensioned thin steel barrel.

OP, I had a similar problem with a form1 .223 can, and a stout wave washer fixed it. Haven't had the same issue with my 22/45, though.

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Re: Endcap won't stay tight

Post by CMV » Tue Jan 24, 2017 7:32 pm

22/45 Lite. I'll try w/ wave washer installed. For some reason I thought you weren't supposed to use that with the suppressor.....but it is there for a reason.

My other one stays tight w/o using the wave washer but it has a bunch of holes in the endcap for a spanner wrench and is smaller diameter.
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Re: Endcap won't stay tight

Post by Hard_ware » Wed Jan 25, 2017 9:11 am

2 small spring loaded grub screws on suppressor side to match up with spanner holes on the 22/45 lite should keep it from rotating loose.

Another option notice threads on the 22/45 lite are not threaded all the way to the base ?

Machine out a beveled space in the suppressor for a small o-ring to compress within the space that is not threaded on the barrel when mated together.

Not sure if this makes sense the way I explained it.
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Re: Endcap won't stay tight

Post by mpallett » Thu Jan 26, 2017 10:05 am

The suppressor mount threads look off. (could be the picture)
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Re: Endcap won't stay tight

Post by CMV » Fri Jan 27, 2017 7:08 pm

[quote="mpallett"]The suppressor mount threads look off. (could be the picture)[/quo

On the gun or silencer? Gun is factory, silencer endcap are good 1/2-28
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