Square section buffer and ram?

[Mouldy]

Tried that, wasn't a succes. Too powerfull and fast. Have the photo's to prove it.

It's to much work for the results. Even for me who can make all the parts at home.

But if you want to build such a setup, please do. I like to be proven wrong.

After you sold that setup to grant cooper, it got totaly re-machined, weight taken out, re-bored, new plunger and all tolerances made properly, it now works reliably and its fitted into satans mutt.

The buffer ram system works great.

[Liftoff]

Right, so I did some measuring and cad work to figure out weather a round buffer ram fits and how much space can be shed off...and it looks like a good option. I'm scrapping the box section idea - for now.
I've researched a little bit on the these buffer rams and also got some photos of the internals so I went on to sketch something which could fit in my robot.
If someone could look into the drawing and point out potential issues would be great... One thing I have not sorted out is how to exhaust the air in the ram after being fired...the only thing I can think of is a small hole in the piston but not sure if its the best solution...