Mystery wheels

[Glen Plumridge]

Picture of sprocket in question
It' a bit hard to count the teeth underneath.

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[Glen Plumridge]

Sprocket is a 35 tooth, so will work for the Brit carrier.

After 3600 + km of traveling back and forward this past week ferrying trailer loads of parts everything from out west is back at my place.

The LP2A will be the focus of my effort initially.
First step is to clean out around 50kg of dirt from the floor.


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After cleaned and washed out
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Need lots of parts so if anyone has bits for sale in Australia please let me know. I will put a WTB ad in the correct forum with a list.

[Glen Plumridge]

Sadly nearly all of the suspension units have been cut to bits and mounted on various conveyor and rotator drums at the opal mine over the past 50 years.

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So I will either need them from other vehicles or will have to reproduce the trailing arms and pivot lugs.


I did get a lot of track. Most all of it is Australian.
Only had a little bit of Brit track left because it was used as drive chain on equipment which you can see in the rotator pic.

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[Glen Plumridge]

Admin?

Any chance of changing the thread title to something like "SAR LP2A and MK1 rebuilds"

[John Mackie]

Welcome to the forum and the world carriers. The restoration of my carrier was mostly complete 10 years ago. I may be able to help you with some sispension parts.My carrier was upside dopwn in my yard for 35 years. I assembled it in 12 months and had it at Corowa in 2007 .

[Glen Plumridge]

Thanks for the offer John.
I think I will be OK for the suspension parts at this stage.
I have a mate that has a spare set that he is going to help me out with, so hopefully the LP2 will be OK.

I am still looking for a british set of rear suspension units though for the pommy Mk1 if you know of any around. As well as a few other pieces for both hulls.

I've got a list of odds and ends that I am looking for in the for sale and wanted section if there's anything there you might have that's no longer needed.

[Luke R]

[QUOTE Need lots of parts so if anyone has bits for sale in Australia please let me know. I will put a WTB ad in the correct forum with a list.[/QUOTE]

Where are you in Aus, Glen?

[Glen Plumridge]

East coast new Newcastle.

Can travel to pick up if required.
Did 3600 Km this past week ferrying all the parts I bought from Lightning Ridge.

[Glen Plumridge]

Slowly stripping LP2A hull number 4425 and gradually getting parts and supplies together.
Only have the diff assembly to remove from the hull before I can get it sand blasted and get paint on the internal section.

Most parts have come off fairly easy and look like they will free up with a little work and lubrication.

Used the, weld a nut to the stud method to remove sheared off bolts and that worked well for the most part. Some impact after the weld cooled also helped the more stubborn ones.
Only have one threaded lug that was not recoverable.

First engine ended up being only good for parts as one of the cylinders was too far gone to re bore and putting in a sleeve is a last resort, so back on the hunt for an engine to rebuild.
It was only cheap so I got a heap of spare internals from it anyway.
The gearbox has freed up OK so might have a win with that one.

Tried a few methods of unseizing some of the worst track sections.
Soaked in citric acid solution. not much changed
Heavy hammering and flexing. not much changed
Sat the track section on a low temp fire and then worked over it with hammer once cool. This got all of the seized links moving and allowed the pins to be punched out. Pins were heavily pitted.


Found a place with 7/16" 4140 round bar so there will be new track pins if the trend continues of finding poor condition ones in the tracks so far.

Were pins hardened to a known rockwell number?


Getting some paint organised so I can protect items once they are reconditioned.

[David Herbert]

Originally Posted by Glen Plumridge

Sat the track section on a low temp fire and then worked over it with hammer once cool. This got all of the seized links moving and allowed the pins to be punched out.

Glen,
The trouble with doing this is that it is likely to make the material of the links very brittle. That does depend on what they are made of and I do not know the metallurgy of LP track but most tank/carrier track that I have worked with is fit for display only if it has been heated. If you break a track at speed you nave absolutely no control of what happens next.

A much better way is to submerge it in a bath of molasses for a few weeks. As this is a very slow process it will gradually eat the rust from inside the hinge joints in a way that a faster chemical process won't. It will do no harm at all and is cheap if smelly. A plastic 'wheelie' type garbage bin is ideal as a tank as you can get a reasonable length in and it has a lid to keep the smell in and vermin out. There are various threads about this on the forum.

David

[Lynn Eades]

David, does M.C.I., B.S.S.309 mean anything to you?
Is it Malleable Iron ? That is a spec for British track links from Feb.1944.
They tried all kinds of brews with Nickel etc in the early days, but settled on a std brew, I imagine the Australian link was made of a similar brew.
I can't locate any info on the pin, but recall it was heat treated?