Lp2 track pins

[Dale Jordan]

What's the type of steel used and DIA of track pins for a Lp2 carrier ? . Dale

[Lynn Eades]

Pin dia. 0.4375" (7/16")

[Mike K]

Originally Posted by Dale Jordan

What's the type of steel used and DIA of track pins for a Lp2 carrier ? . Dale

You may look into using 4140 chrome moly tool steel, it's readily available and it is supplied in either hardened or non hardened state .

Trouble is 7/16" is a old imperial size

the only place I know that may have some in that size is

http://www.ian-stansfield-smith.com.au/

They have a lot of imperial sized steel .

Mike

[Radek]

Know somebody about suplier in UK?

[Ben]

Imperial diameter steel is quite easy to get hold of in the UK, specific types or grades can be trickier but stockists are usually pretty helpful.

A word of caution.

Last summer I saw a carrier that had been completely re pinned. The old track had been heated (quite hot judging by the steel colour) to free it off then all the old pins removed and newly made replacement pins fitted. It looked great and was an impressive job. The problem was, after some miles instead of the track wearing as it's designed to it began to cut and grate itself. The fine swarf was found all over the track, wheels and suspension. It sounded much harsher than the steady hum you get from original track.

I think the material properties of the track were changed whilst it was heated and this caused the track links to become much harder and not behave as they ordinarily would.

I'm sure re pinning can work but care must be taken.

[Mike K]

This sort of thing can get complicated .

One way to check things out would be to get hold of a original track pin in good condition , or better a NOS pin and do a surface hardness test on it . The TAFE I went to had a hardness tester in the workshop . Basically , the tester drops a pointed weight onto the test piece and a scale records the depth of the imprint , something along those lines

The original pins may have been surface hardened mild steel ? Somewhat like many gears are in gearboxes.

http://en.wikipedia.org/wiki/Case_hardening

[ShawnC]

I was told to use 7/16 drill stock. I have two pins done that way on mine right now going to see how they last. I'd rather have the pin wear out then the track itself.