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Great War truck

WW1 Peerless lorry restoration

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2 hours ago, Minesweeper said:

... the 1/2" studs 

... they are 18 tpi 

Any thoughts on that one, please?

http://www.bodgesoc.org/thread_dia_pitch.html 

Says none of the standards there. 

So, another "Special". 

Maybe there was a reason to enforce a specific nut design in that position? Is the seating area particularly small, for example? 

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Dad, always looking for new exciting things to do thought that he should start cleaning the Fly Wheel. The back of that was full of congealed crud  - oil had dripped on to it over the years and that then mixed with dirt/sand/ any other rubbish and had tuned it all into what was like thick concrete. He chiselled it away all afternoon – absolutely solid and would not give up easily.

  It could also do with a good sand blasting later on if that is practical. If sand blasting is not possible, perhaps it will be easier to clean it properly when it has been taken out.

 

He found that a lot of this crud had been painted grey – obviously when the lorry was last painted the then owner decided to paint everything without cleaning it!

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2 hours ago, radiomike7 said:

Did you manage to identify the crankcase/cylinder stud threads?

No, not yet! Fortunately, all of the studs and their nuts seem to be in good order - so they might have to fight again! I realy am curious about what we are going to find next!

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55 minutes ago, Minesweeper said:

No, not yet! Fortunately, all of the studs and their nuts seem to be in good order - so they might have to fight again! I realy am curious about what we are going to find next!

So they aren't UNS? 

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2 hours ago, Minesweeper said:

No, not yet! Fortunately, all of the studs and their nuts seem to be in good order - so they might have to fight again! I realy am curious about what we are going to find next!

I have just had a word with Steve about that thread again and although I have done no research, he tells me that UNS comes in a variety of pitches - the 1/2" ones are - 12UNS, 14UNS, 18UNS and 24 UNS - so this could be the answer!

Tracy Tools always seem to have a very wide range of threading Tools so if needs be, perhaps they can help! We will try to save the originals if we can.

Tony

 

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