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openspaceman

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Everything posted by openspaceman

  1. I think the type with an adjustable ball on a plate need to be the two pin type, @Justme will know.
  2. That's true I suspect you mean dual purpose, which have the same speed limits as cars. The issue would be do the databases that are used to determine whether commercial vehicles are speeding contain any information about whether a 4wd pick up is dual purpose or not.
  3. Two in Wales that I have visited, Dinorwig opposite snowdon and a smaller one above Blaunau Ffestiniog. Both are closed systems to avoid liquidising fish and from the looks the water is dosed with something. Of course these were built to soak up off peak electricity from (primarily) nuclear power stations and dish it out at a much higher price at peak times, now they will make use of peaks in non scheduled generation like wind and solar, especially as we lose our last nuclear generators (and the French and Chinese f*k us over with the three they are stop start building. Both the above use enhanced natural reservoirs, the Dinorwig one is 600 metres head so not many places available, if you go for a reduced head you need a higher mass of water per unit energy, this involves a more massive infra structure and cost tends to scale with mass. In germany I believe they store energy as high pressure air in underground caverns. Well I agree to a degree, many of the weirs on the Thames and it's feeders could have Archimedes screw generators like the one at Eton but I don't know their rate of Return on Investment. The EA recently rebuilt a weir near me on the river Wey, the original plan was to install a screw generator (because they are fish friendly rather than particularly efficient) and an eel and fish pass but the generator plan was scrapped and EA will not tell me why. With generation plant you have to consider capital cost, operation and management and fuel costs. Even with zero fuel costs the other two can add up to expensive power. You can do a similar sum with battery storage and as far as I can see the capital costs for the total amount of energy stored in the battery lifetime are still currently higher than I can buy electricity for.
  4. How would you separate the hydrogen from the water?
  5. It's amazing to me that our lifestyle choices are so similar yet we are at opposite ends of the political spectrum.
  6. Yes for resistive heating but what about heat pumps?
  7. I doubt it as this is the reason manufacturers have move on to car like pick ups and away from simple solid axle 4WD. We are a minor part of the economy and for my part I never bought new work vehicles but did buy a couple of new family cars.
  8. I guess he was giving an upper bound, it looked like a 75 quid pop in on your way back from a short job.
  9. I doubt it, that just went on your TV licence. He never threatened violence so I suppose that's why he only got an ankle bracelet.
  10. Just the job for offsetting your carbon footprint; mix it in the veg plot, it will have a higher mineral content too.
  11. Yes this would be my take on it, maybe with a little help from a fungal attack. I managed an estate where there was beech coppice that had last been cut around the first world war, there were records of sphagnum moss being taken at the same time. The boundaries were grown out hedges like the picture, with signs of previous hedge laying, and I concluded the genotype of beech was selected by hedging and coppicing over the years to sprout, stools and trees that didn't had died off.
  12. Looks like a leaf spot fungus but no idea which, generally only a cosmetic problem late in the season.
  13. Looks like it and a magnesium deficiency unless that is variegated foliage
  14. That should boost sales of Silkys
  15. That's sad but on reflection Me Too
  16. That damage looks like a shoot borer, where is it? In uk we have pine shoot moth but the damage is nearer the tip.
  17. I realised you had good reason never to consider climbing again, missed the heart attack. Best wishes
  18. IME they were too lazy to come out and look so depended on the photos you send them.
  19. more or less?? Anyway me too but then I never had any climbing training though manage to collect a set of NPTC certs for it. Last commercial climbing was when I was 60
  20. These look more like woodpecker attempts to get at bugs rather than exit holes.
  21. pinhole oak borer Platypus cylindrus I expect. They do get into the heartwood if the wood stays moist, in the second season. It was almost unheard of pre 1987 but has remained widespread since.
  22. It won't be actively policed but will be as the result of a mishap. Failing that if it's anything like scaffolding or roofing firms being prosecuted beware the neighbour taking pictures.
  23. Yes I thought magnesium allow. You would have to clean it up and I'm told it is better to file and gouge as a grinder can carry debris into the work. I'm not very competent with TIG and the faff of preparation and getting the kit out would put me off. Would you point me to a video? Again the amount of preparation would put me off I'd empty and clean the tank, scrape it back to bare metal along the crack, dowse it in brake cleaner to get oil out of the crack and use some thin epoxy stippled into the crack, then rough the paintwork up to key it and apply strips of carbon fibre tow at right angles to the crack and covering the dented area, ugly but effective.
  24. No but they should only cost a couple of hundred quid, they are standard sizes and probably 1P series.. Keep the old one as they split apart and each section can be cannibalised to make a good one if the same one wears out . You really need to check a few things before deciding it is a pump problem.

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