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  1. Pud

    Luton Airport car park ablaze

    My money is on an EV battery self-immolation: https://www.bbc.co.uk/news/uk-england-beds-bucks-herts-67073446 Politicians like to panic, they need activity. It is their substitute for achievement.
  2. Pud

    Chinese EV refuses to stop

    'I was kidnapped by my runaway electric car' - https://www.bbc.co.uk/news/uk-scotland-67005620 Politicians like to panic, they need activity. It is their substitute for achievement.
  3. Pud

    Multi-Story car parks and EVs

    Wasn't too sure where to start this thread but as some here are structural it'll do: In the UK news today there are couple of articles querying whether current as built carparks would be strong enough to carry the load of EVs when we're all driving one. Any comments from the steel and concrete...
  4. Pud

    Fusion - UK government goes for broke

    Central England- https://www.bbc.co.uk/news/uk-england-nottinghamshire-63119465 Politicians like to panic, they need activity. It is their substitute for achievement.
  5. Pud

    Genoa (italy) bridge failure

    Ref: thread815-443075 Update on Genoa bridge failure: https://www.bbc.co.uk/news/world-europe-62076262 Politicians like to panic, they need activity. It is their substitute for achievement.
  6. Pud

    3 phase Isolators current rating

    Hi all, Q for the electrical gurus amongst you. We are moving factory to premises which was occupied by a rubber seal manufacturer. We are thermoplastic moulders. They are leaving wiring which was supplied their machines - some of it is ideally sited for our purposes. Our machines are rated...
  7. Pud

    Specifying a Spur Gear

    Hi folks, It's been a long, long time since gear days... Am I correct in assuming that a gear can be specified by just the number of teeth and the modulus? i.e. The two parameters then determine the o.d., pcd, etc? (I know the tolerances are another thing altogether!) Cheers Harry...
  8. Pud

    Polyketone - where did it go?

    Chatting in the office today, the subject of Carilon (Shell trade name) came up. We remembered it being sold as the "next big thing" - a cheaper replacement for POM and PA12 etc. Wikipedia says production stopped in 2006. Polyketone Any ideas why? Or are there other polymers which never made...
  9. Pud

    Impact strength of LM25 Aluminum alloy?

    I am from the darkside - plastics! I'm trying to get a definitive value for the above alloy - have looked at dozens of data sheets and the impact strength seems to be omitted for metals, but it usually specified for plastics. Plastics are usually defined as Charpy rather than Izod test, notched...
  10. Pud

    Thread Form Decode (Oil and Gas stuff)

    I need to draw up a threaded protection cap for one of our customers. Being oil industry stuff, they all seem to use "home made" thread forms ( I think) The thread is designated: 6.11/16" - 5NA - 2G (STD) Major Dia 6.688/6.788 My question is: what is the pitch? Sorry to be thick - I...
  11. Pud

    Flagpoles and Salesman

    Our sales guy has volunteered us (i.e. me!) to redesign a flag pole support. To keep it simple, imagine a tubular socket on a flat plate of infinite thickness, the socket having a length of 290 mm and an internal diameter of 60mm. There are various length poles with various size flags on the...
  12. Pud

    PA6 Surface Finish improvement

    Today we had to use an alternative to toughened PA66 as there appears to be a shortage of the stuff. We used a toughened PA6. The finish was awful - dull/patchy etc. (Yes, it was dry, melt temperature as measured was in middle of range, blah blah, etc.) In came my sales manager and suggested...
  13. Pud

    Nylon and Zinc

    Ok, here goes: We have new customer who has specified a part in nylon 6.6. We have the contract and during the sign-off meeting they mentioned that the parts are bolted onto a galvanized steel part. The end use is a truck curtain sided trailer - non critical application. I mentioned than Zn...
  14. Pud

    Shrinkage of PA6 30GF @ 5mm

    Hi all, We are currently having a tool made for a product with a tolerance of +0/-0.5 over 197mm. Wall thickness 5mm. Du Pont only have the shrinkage data for 2mm thickness (Doh!). Some material manufacturer's have info on shrinkage vs wall thickness, but as usual,I cannot find amongst my...
  15. Pud

    "Tortex" Guitar Picks

    Does anyone have any idea what Tortex (tm) is? Google just turns up zillions of picks for sale and Wikipedia only says it was developed by Jim Dunlop as a replacement for tortoise shell. When burned it looks styrenic - e.g. yellow flame and black smoke, but does not have the familiar smell. It...
  16. Pud

    Capacitor Replacement

    Please bear with me - this is not my field.... Last year we had an electronically controlled proportional valve fail (on an injection moulding machine) - replacement cost 1700GBP. The mechanical part of the valve is fine. Yesterday the engineer from the company gave me a service fix sheet...

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