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Mk3iain

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Everything posted by Mk3iain

  1. Absolutely, and it is likely just the inner gimble . If you picture it with a second gimble to give freedom of movement, then sealed in a case with a tube vented to outside air pointing at the groves/vanes. The case is then subject to a vacuum and the tube "blows" the rotor and spins it up. It can be mounted with a spring instead of the second gimble to provide rate of turn. A bit basic but they worked on early a/c and other things. Still in use on vintage aircraft, I worked on a 30s Beechcraft a few years back and the "auto pilot" was also vacuum and pressure operated with bellows etc. Sorry, my original trade...🫢 How they get the vacuum. https://www.aopa.org/news-and-media/all-news/2023/january/flight-training-magazine/what-am-i-vintage-venturi
  2. I had the same problem with my Militant a few years ago and it took me ages to sort it. I went over the whole system time and again. Then one day I checked the back of the buzzer unit after removing it and just noticed a stray wire thread that occasionally touched the metal of the cab. Nuts! I think some parts of the system are the same or similar (it was built in 1970) but the buzzer unit is an old type. Still it is so easy to miss and so annoying.
  3. If there is no obvious visible damage to the wires I would focus on junction boxes and places where there are connections. It just takes a whisker of wire to cause a short or a loose connection to give an open circuit.
  4. Hi, Do the brake lights come on when operated ? Be sure you have changed the pressure switches for the low pressure warning and not the brake light. (daft question but you never know). With the system pressure at zero remove the switch or switches and run the engine to purge any crap that is near the switches blocking their use. If possible a direct reading pressure guage fitted at the switch union will confirm the switch is seeing the correct pressure. If all is ok, maybe looking at a wiring problem, do you have the wiring diagrams ?
  5. The nets look like helicopter load nets, maybe...(it's been a while). For internal use not underslung, same used in fixed wing transports etc.
  6. Sweden or Finland maybe ? Just guessing...
  7. I can just about remember some (squadron) vehicles using PTR175 and a/c blade antennas, maybe even 244 sigs (?) vehicles. All on Ebay these days...
  8. On my Perentie I have 750 16 Hi-Miler Xtra grip and Custom Xtra grip it looks to be just subtle differences in the tread pattern.
  9. Looking good ! I still have good and not so good memories of operating in the artic ( around Bodo and Kirkenes) with series Land Rovers etc. We always had chains on the rear of the lightweights and used them (helistart) to start Pumas in around -30 deg and lower. (Once had a bottle of 13 year old Glen Grant half frozen after a night in the outer linning of my sleeping bag.) Never seen one with bar treads though. Have you seen the Accurate Armour wheels. https://accurate-armour.com/aa-products/135th-land-rover-products/lra005 Look forward to seeing the finished article !
  10. Much of which is already moving on. Ok for hydrogen read green hydrogen. We already see hydrogen powered buses and even ships fueled by (green and some blue for the time being) ammonia. etc Costs are coming down and infrastrcture is evolving and planned by major operators and producers. Much of this is well on the way and as I stated is just an example of how we do not have to be totaly reliant on ( partly green) electricity and (not so green) batteries.
  11. You can bet no answer to this will be cheap and the tax gap will be filled somehow. But why are we planning to go electric everything ? Because of lots of powerful lobyists that will cash in on it. There are alternatives, such as hydrogen combustion. Ask JCB they have developed from scratch a hydrogen engine as electric power is not viable in heavy plant etc.
  12. That would be quite something ! For all the years I worked for Norwegian companies and others in Norwegian waters I dont think I have been close to the area. It would be so good to take an rov down and inspect and record the wreck if it is possible. In the future, who knows.
  13. That certainly looks the same as his signature, quite distinctive ! Something to be treasured and even better if used .
  14. How did you come across his jacket ? Amazing and in great condition. My father was much the same about his experience as a pow, just the odd snippet as I grew up. Later I have managed to find reference online to much of what I can remember him saying and it all fitted ! Keep it coming Adrian, the little snippets are getting lost now...
  15. Fantastic thread Adrian, huge thanks ! We were still being issued those tags in the 70s and 80s ( with our own details of course 🙂 ).
  16. Maybe the webmaster/host needs a good scowling at...
  17. I have the same on my mobile devices until I change the theme to default, found at the bottom of the page. Still no word on how or why this has happened !
  18. Just checked on my "mobile device" and its not noticeably better. In fact your post in the activity list is dominated by an advert. Go figure... What has changed to get to this situation, I noticed some detail changes on the site as well but they might have happened at another time ?
  19. Too right, I have sorted my pc now but anything else is a pain. What has happened ? Webmaster Moderators Why does no-one respond to this ?
  20. Thank you, I am doing it now and so far, with adblock plus, all good. So far....
  21. I have been considering dumping Edge for Firefox and have installed it ready. Just uneasy about making the move, don't know why.... If it helps to stop this carry-on then maybe this is the push I needed. Maybe.
  22. I have just checked up on the "free" total add blocker for Microsoft edge and the reviews say "stay away" citing pushy messages to upgrade to a paid version etc. So I'll pass on that. This is the only place I have this problem so if it continues I will just not be coming back, so unnecessary ! Hopefully personal details are still safe on here !
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