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andypugh

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Everything posted by andypugh

  1. I think that I would seriously consider epoxy. In fact the ring is so good that I am going to suggest a way to show off 🙂 Get them to make a bigger complete ring. Cut it in half horizontally, then press divots in the bottom half with a specially-made press-tool. Cut slots for the spokes and then cast bakelite round the wheel. I don't think an authentic reproduction is out-of-reach. But I also don't think it is worth the effort.
  2. https://www.the-saleroom.com/en-gb/auction-catalogues/gilbert-baitson/catalogue-id-ibgi10619/lot-536061a5-96ec-48bd-a986-ac2100d32c22 Is a 1914 Bleriot lamp.
  3. https://www.the-saleroom.com/en-gb/auction-catalogues/gilbert-baitson Mainly _very_ Pre WW2. But there might be some stuff there.
  4. How bad is the switch? If the metal is intact then I would imagine that the rest can be re-made? You can get suitable Tufnol / Bakelite from eBay (amongst other places). I used some to make some replica Ner-a-Car light switches. (Now _there_ is a hens-teeth item: https://bodgesoc.blogspot.com/2014/11/the-last-bits-and-pieces.html )
  5. Well there are complete trucks trundling around that started with a lot less.
  6. it would look a lot better on solid tyres, in my opinion. But would also be less practical.
  7. Or, I suppose, just pay the £20 for this die: https://www.ebay.co.uk/itm/1-3-16-x-12-die/283383706282
  8. Another option would be a Coventry Die Head. I know where there is one (South Kensington) but it's all covidded shut. And is likely to be too small. Though that does suggest another option. I know that you discounted making a die, but it might not be so hard to improvise a die using: https://www.ebay.co.uk/itm/391436755923 Maybe just a guide hole with a single die-head cutter running in a slot advanced by a bolt? Wood would probably work, or 3D-print.
  9. If you can get access to a lathe which has a big enough through-bore then I would suggest hand-chasing the thread. (improvise a woodturning-style rest and let the chasing tool feed itself along. It actually goes a lot better than you might expect) There are some on eBay at the moment, one is £5 BIN, but this one claims to be "USS": https://www.ebay.co.uk/itm/122563590343
  10. I think that the springs must have had the square end formed after winding. Going (only) by the pictures I don't think that the mandrel would come out otherwise.
  11. Do you have a plan for covering the rim? If all you need are some bumps to go under the coating, then I think I would 3D print them. Though the probable shape will make that a bit tricky as there will be no flat surfaces to sit against the print bed. If you made a pattern from epoxy putty or similar then you could make a silicone mould and cast them in epoxy. But that would be one-by-one and pretty tedious too. Combining the two ideas, perhaps a 3D-printed mould to form some epoxy putty into a consistent shape, then apply those to the rim. I think cling-film might be the answer to releasing the putty from the mould.
  12. I have an aluminium acetylene generator for caving somewhere. Probably 30 years old. But maybe ask a chemist?
  13. If you google about you will see that the Titanic steering gear used the even more stupid triple-helix design. (with a double helix the two sides can balance the load by floating the pinion laterally. Not so with a triple. And you can't cut the gears with a sunderland planer either.
  14. It would be fairly easy to re-shape the body with a spot of hand-turning. ie, with a rest and a hand-held bit of tool steel. (least-favourite wood chisel reground?) https://youtu.be/SpVBjjdEoPA
  15. One possibility is to prevent cracking at the hub or spokes due to the outside getting very hot with the inside cold. (in that it is pre-cracked in a controlled way)
  16. Mag drills are available used on eBay for reasonable money. Reasonable enough that I have one. Though I do feel that the format of the Rotabroach Adder looks like it might be better in tight spots like old vehicle chassis. (I see some new ones for £450 on eBay today, which is a lot cheaper than normal, but still not cheap)
  17. It was 19-umpteen. A lot of engineering was based on rules of thumb and common beliefs. The baffle might have been intended to address a problem that did not exist, to address a problem that did exist, but ineffectively, or to address a real problem effectively. It is very unlikely that anyone then would have bothered to _test_ which of those it was. Even now, where a car company might have more test vehicles than a total pre-war production run, a lot of stuff gets put in on the basis of "it probably does no harm" or a quick back-of-the-envelope FE analysis.
  18. Thanks, I will have a look next time I pass that way. I have a bit of an interest in Karrier as my dad worked for David Browns for 50 years and I think that they made their gearboxes. Talking of gears, if you need any then it might be worth talking to the company across the road, in case they know about Karrier and where they were made.
  19. Well, I found a casino and a church in the same frame: https://goo.gl/maps/HRkGCDo3SWyFUX637 But following the road I only found Brook Crompton motors. (important in their own right)
  20. Where is that? (I was brought up in and around Huddersfield, so I think that I know roughly where that is by the style of the buildings. I would guess somewhere in the wierd maze-like one-way system south of the University)
  21. Named after the family: https://en.wikipedia.org/wiki/John_Isaac_Thornycroft The shipbuilding part still sort-of exists, and built: https://en.wikipedia.org/wiki/Mirabella_V
  22. Did you consider that they might be chaplets?
  23. If time is more important than money, RS components hold a surprisingly large selection of gland packings: https://uk.rs-online.com/web/c/pneumatics-hydraulics-power-transmission/power-transmission-gaskets-seals-packings/gland-valve-packings/?sort-by=P_breakPrice1&sort-order=asc&pn=1
  24. There are a fair few that are 50 years old. In 1955 the student union I would later join took on a 40 year old fire engine. When I joined it was 70 years old and the transit vans were fairly new. Now the fire engine is 100 years old and those union minibuses would be getting on for 40 years old (if they still existed) Time just keeps happening. (numbers for illustration only, some rounding has taken place)
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