125 YPVS barrel cut apart and sleeve removed pic

[billy]

This is what an RD125 YPVS barrel looks like when butchered and the sleeve popped out. Might be of interest to someone.



The remains of the sleeve (I lost a piece lol):

[billy]

Oh btw, the barrel was on max bore and seized rather badly, so it needed a resleeve in order to work again. I'm not going to resleeve a 125 YPVS barrel, especially not if I don't even know if it's possible to resleeve it or not (NOW I know it's possible though).
It's rather expensive work and there's plenty of these barrels around here in Sweden, so if I ever need a YPVS barrel, I'll just look for another one.

Also, I want the bloody cylinder to disappear from my life as it's taking up space needed for other bike parts, so my plan is to melt the remains down into an ingot and save it for future use in my aluminum casting career. I also have the 125 YPVS head to melt down. The head has been cracked and welded, and I would never really trust it stays flat through the heat cycles, so that will go into the crucible aswell.

[billy]

So... I've molten the aluminum down. Well, about half of it lol. I didn't have enough wood to keep the fire blazing so I only got a 550 g lump. It's a rather chunky piece though!

I would have wanted to make a bigger one and cut it apart for inspection but... Meh, you can't have everything in life eh..

Here's a pic anyway:

[billy]

I did a bit of inspection on the top surface of the ingot (top = where most of the bubbles and crap ends up) and it looks very good beneath the ugly surface! Even at the ugliest point of the surface, the metal looks pretty damn good. I don't see any bubbles at all in any of the drill holes, so it's much better than I expected.



Next step is to saw the thing in half and inspect it some more.

[billy]

I cut the lump in half, it had some pores at the centre (as expected). Then I cut the half in half, and this quarter part you see in the video has very little pores as it was taken from the edge of the big lump.

You can see at the top right corner of the piece in the video where it has some pores (don't mind the saw marks, I tried filing/sanding past it but it was a hell of a job so I gave up when I had most of the surface cleared), but that's closer to the centre of the complete lump I casted, so no wonder it has some pores there. The rest of it looks pretty damn good actually!



It'll be nice to cast with this stuff, all you need is an extended riser and feeder where all the small bubbles can rise away from the actual part you're casting.

I'm going to cast an electric guitar now lol. Naah j/k... Or wait, am I?

[The Pirate]

I cant see the video it say's its private

[billy]

Dec 29, 2012 10:10:57 GMT 1 The Pirate said:

I cant see the video it say's its private

Hmm that's strange, should be fixed now though.