Diy Hydraulic Buffer

[Livn68]

I've had my eye on a blitzkrieg hydraulic buffer for a while now, but didn't want to jump in on it just to try it out.

 

Working at a company that designs and builds automated/ robotic machines for manufacturing has its bensfits, like spare parts bins that have some pretty cool stuff in them like the pistons we use to prevent moving parts from coming to a slamming stop.

 

I spent some time on Monday after hours and turned some stainless to make myself a hydraulic buffer to try out in the pcc. It finished out at the same length (when compressed) as my 7.5oz KVP buffer and weighs in at 6oz.

 

I ran 100rds through the carbine with the new buffer, a Smalley H7 spring, and a quarter to separate the H7 and buffer spring. So far im really impressed with how much better the dot tracks, and I feel like the sproing sound from the buffer tube has subsided. I do have a old spikes H2 buffer that has crushed tungsten in it that I may use to add slightly more weight to the buffer but I didn't leave much room between the piston and buffer bumper.

[BigBamBoo]

Looks great! How much??? 

[Livn68]

Looks great! How much??? [emoji3]

It didn't cost me anything but time, but I'd vnever make any to sell. The product is not my idea, so I have no right to sell it.

[MickB]

Can you show the internals? Are the pistons available from commercial sources?

 

Mick

Edited July 29, 2017 by MickB

[Livn68]

Can you show the internals? Are the pistons available from commercial sources?
 
Mick

Here's the piston I used. It's made by ACE industrial. The body is threaded 9/16-18. That's all the info on have on it off hand. The end bumper is from another buffer but kak industries sells them for a buck. The rest was turned from 316 stainless.

[bmiller]

Great work!  From the quick research I have done, this looks to be rated at best for 41 cycles per minute.  Apparently it is capable of recovering quicker than that? I have been thinking about buying a hydraulic buffer to try.  Thanks for posting this.

Edited July 29, 2017 by bmiller

[Livn68]

Great work!  From the quick research I have done, this looks to be rated at best for 41 cycles per minute.  Apparently it is capable of recovering quicker than that? I have been thinking about buying a hydraulic buffer to try.  Thanks for posting this.

It does have a spring return. Given the speed of the pcc action I doubt it does a "full cycle" by the manufacturer's definition. From the videos I've seen of the blitzkrieg, I think this piston is a little stronger meaning it doesn't compress as easily.

[bmiller]

Ok, thanks.

[TRUBL]

How much pressure does it take to collapse......needs to be greater than the pressure of the recoil spring at that point.....or it's useless.

It's got to hold up to .13 splits.....remember that is about 462 cycles per minute.

[Livn68]

How much pressure does it take to collapse......needs to be greater than the pressure of the recoil spring at that point.....or it's useless.
It's got to hold up to .13 splits.....remember that is about 462 cycles per minute.

I don't know what the measurement is on how much force it takes to collapse, but I do know it takes more than the blitzkrieg does, and people love them. What it's mainly doing for me is absorbing the shock when the buffer bottoms out in the tube. I see no issues with it holding up to those kinds of splits with it having an internal spring return. With the amount of stroke it has, I have a hard time seeing it getting fully collapsed under normal USPSA shooting conditions. Perhaps it would on a 20rd dump at .13 splits. Even at that rate, it would just be a 6.5oz solid buffer.