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David Herbert

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David Herbert last won the day on June 19 2018

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About David Herbert

  • Rank
    Lieutenant
  • Birthday 04/02/1954

Personal Information

  • Location
    Ayrshire, Scotland. previously Suffolk
  • Interests
    Heavy armour, plant, narrow gauge railways.
  • Occupation
    Retired engineer / odd job man

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  1. It's an Austin K3 but I don't know what 'ZC' means but it might relate to the original rear body, of which there were many types. There were 17,097 built between 1939 and mid 1945. Early ones had 34x7 tyres (later called 7.00-20) with twin rears. Later trucks were on 10.50-16 singles all round. Engine was a 60 hp six cylinder. There are very few left and in the UK that would be regarded as a good cab, ours have rusted very badly. Good luck with it. David
  2. I have one similar to the green one in the post above but of considerable age, painted red oxide and measuring 7 1/4" extreme length (which is rather shorter than the green one I think). It does not have the rubber nozzle. I have always assumed it was ex-mod as it came from a surplus dealer but there are no markings on it. It has a vent pipe that comes out of the base of the tube part and curves over the part that seals to the can. If the green one above had one it would be just visible at the very top of the photo. David PS, I have had mine for about 30 years and it was far from new when I got it.
  3. Oh that is depressing 😫. At least you have a better crank. David
  4. I think that all your points are good and that it is very acceptable to restore any vehicle to as close as possible to how it was at some point in its history. The problem comes when making it into something that it never was, or even more so if making it into something that it could never have been because a key 'improvement' (to use a silly example - air bag suspension) had not been developed then. To restore a Sherman to exactly how it came out of the factory is very difficult now, regardless of your budget, because some parts are simply not available and re-manufacturing them not really practical, so a degree of compromise is almost inevitable. Wherever you draw the line will draw criticism, mostly from people who don't restore things themselves. David
  5. Yes, Centurion. And very heavy ! David
  6. Could be caused by people putting EP90 oil in there. It eats bronze / brass even without a load. David
  7. In the 20s and 30s the Germans were building steam locomotives with Whitworth threads but metric head sizes. David
  8. And you have operated her for longer than the army did ! David
  9. As it says on the parts list, this is a special thread, invented by Leyland for that particular application. I used to work for Fodens and they invented their own threads for that kind of thing if there was no standard one that seemed right. Don't mess the nut up ! David PS, It couldn't possibly be UNF as that wasn't standardised until the early 50s. Before that the USA used American Standard threads from which UNF and UNC were developed but not all sizes interchange (like 1" UNF is 12tpi vs. 1"AF which is 14tpi).
  10. The small idler wheel below the sprocket was originally officially called the Tension Compensating Idler Wheel but that got shortened to Compensating Idler and then to Tension Idler which is a better term as it was sprung downwards by a small torsion bar but not linked to the rest of the suspension, unlike the Track adjusting Idler at the front of the tank which moves forwards as the front road wheel moves up, thus compensating for compression of the suspension and reducing nose diving when braking. The Tension Idler was to prevent the track bunching upwards between the sprocket and the rear road wheel when reversing, or when braking that track whilst going forwards. As the track is rubber bushed it is damaged by bending it sharply back on itself in the wrong direction. If driving forwards the tension of the sprocket pulling that part of the track will keep it straight however slack the track is. It does also contribute to guiding the track onto the sprocket and reducing flapping of that part of the track when coasting. They were kept in place for most of the US Army service life of M47s but were often removed by other users to reduce maintenance. David
  11. If you want to change a vehicle so that it differs from what is on the V5, just do it and then notify them in the way that it asks for on the back of the V5. If you are changing it TO what it says on the V5, just do it. Then the paperwork will fit the vehicle and everyone will be happy. Of course the insurance companies are getting fussy about modifications to vehicles being notified to them, which can even include factory installed optional wheels. David
  12. I used to buy bearings regularly for my business and EVERY time I would be quoted a price four times what I paid last time. When challenged they would ask me what I paid last time and without argument would more or less match it. Certainly it seemed that at that time there was a huge discount to be had and list prices were inflated to allow for it. A crazy way to do business ! David
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