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#1
10-08-09, 14:11
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Link pin holes were drilled with.... a core drill! This is a three or four flute drillbit that is only able to drill out an existing hole, not drill from scratch.
They can cope with irregular shaped holes such as left from a casting core and produce a nice round hole. I have a selection and find them very useful. As Ron says, you could drill a lot of links in a day but you would need a jig with bushes in to control the hole centres.
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Adrian Barrell 
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#2
10-08-09, 17:58
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Perhaps two quotes are in order. Raw castings and reemed castings.
I had also heard that the alloy used in the casting is a bit hard to come by. The expense of shipping from the UK, may make trying the same thing on this side of the pond. Please keep us info'd as to progress. At some point we are all going to run out if track bits! Jeff
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Jeff
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#3
10-08-09, 18:45
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cast manganese steel and its still used by the japanese army (among others) today. A firm based in Durham still make tracks for japanese contracts i enquired about this you see
 they were flat out all with those contacts so could not assist me, but reckon from the belt of links i showed them, they were not a difficult item to cast.the various quotes way is a good idea as folk may have they're own facilities to drill/machine the links, or have say a load of nos pins that could be used etc etc. as for shipping if enough folk over the pond wanted sets made they could be shipped in one small container and money could be saved. Thing is the lucky folk in canada have better access to carrier wrecks than us poor brits so may have better luck tracing track that way. At some point we are all going to run out of track bits! Jeff you hit the nail on the head !!! and this goes back to my previous rant, we really need to think outside the box now to ensure this stuff is available for future generations to keep these vehicles rolling and preserve important memories / history. i am confident between us we can produce a viable resolution to this issue.... like i say i can have stacks and stacks of pins made at a good price, as long as i have correct diameter and length to supply my old man (and the college) 
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is mos redintegro __5th Div___46th Div__ 1942 Ford Universal Carrier No.3 MkI* Lower Hull No. 10131 War Department CT54508 (SOLD) 1944 Ford Universal Carrier MkII* (under restoration). 1944 Morris C8 radio body (under restoration). Last edited by RichardT10829; 10-08-09 at 19:13.
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#4
06-03-10, 22:14
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UC track pins
This may help. I found some info from when I was researching reproducing track pins. The following is the result from composition testing on the Canadian track pins.
Ni 2.31% Mn 1.53% Cr .31% Fe 95.06% Perry
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