@ Chuck and Joel:
I checked with my local hardware store today, went through all sleeves and pipes they had. The closest material was a copper pipe, two meters long... Don´t think that copper is strong enough. And the ID was way to wide anyway. Definitely was the wrong store.
Joel, I know that you are a good machinist. My dad owns a lathe, but he is 82 years old and I don´t want to stess him, need to wait for the right moment to ask him.
Just thought it would be easier if one of you fellow Gee members could put one in an envelope.
So my search will continue. The jeep had existed probably the last 20 years w/o it, so it will do it for a while...
But - as always - thanks for your efforts and advice, appreciate very much!