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openspaceman

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    Surrey
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    openspaces
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    admin

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  1. 6 to stop the handle falling off 7 yes you could move it up and down and bend it a bit straight but it will never be good enough to use so follow @GarethM's advice then buy new
  2. I seldom go shopping and use the "pay at pump" machines at petrol stations and buy most toys online else always pay cash whenever I can. I also wonder who pays for those ATMs? As only the amount drawn out shows on my statements.
  3. If you want to take it on road at all look at the tyres as mine are marked not for highway use.
  4. They do and the fuel air mix also passes over the valve gear and into the crankcase, lubricating them so they still need a petroil mixture. Also I think that on the induction stroke some of this mixture is pumped into the cylinder.
  5. Que? I do realise they are still lubricated by the oil in the fuel but...
  6. That's interesting. From what I understand it's the fast charging that means the electronics have to be complicated, to avoid over heating. I have opened up a failed Ferrex charger and have not been able to see any obvious damage. I shall take it to the repair cafe and ask one of the electronics people to have a look. They are very good but do give up on highly integrated stuff like flat screen TVs if nothing is obviously wrong. In the meanwhile if you know the number of cells a generic low current charger should work. 18V packs are strings of 5 cells in series often two parallel strings. I would still not charge indoors just in case. In fact I charge mine individually to 4.15V. The batteries are nearly always packs of 18650 lithium manganese cobalt cells and if one fails it can mean the whole pack can. While the pack will be spot welded you can buy the cells with solder tags for £4.5 and solder them in to the nickel strips (best not to apply heat to the cells). I have dismantled an 80V battery from a 2016 mower and 50% of the cells were still good, my Ferrex battery had one bad cell but I was a bit hamfisted taking it apart and that made it difficult to reassemble as each cell has a pair of wires connected to the battery management system.
  7. It seemed to be a slightly non human response
  8. The heat storage is in order to pass back the heat into the liquid air as it expands through a turbine, similarly the cold this generates is stored to cool the air as it is compressed. It is all part of an integrated system to maximise storage efficiency, it will never get close to a battery but should approach pumped hydro efficiency at a fraction of the capital cost. Pumped hydro only stores up to a day's usage. Compressed air was stored and used to start big diesels, often on ships. When I visited the internal fire museum the owner said he went to pick up a diesel engine and its compressed air starter that hadn't been used for over ten years. When he set it up at the museum the air in the tank was still good enough to start the engine, not many batteries would manage that.
  9. I have never done one with a bar nut but if there is enough meat left in the plastic one of these warmed up and screwed in may work. You will need a new stud to screw into it.
  10. So won't even manage a boot load of logs on a full charge?
  11. I suppose yours is the top handle? I see a back handle DUC353Z and two 6Ah batteries is just shy of 500 quid. Maybe ok to fetch a boot load of logs quietly??
  12. Dinorwig pump storage is a marvel, was designed to absorb electrcity from a local nuclear plant and continues to provide peak lopping now but there are not many places else left for pumped storage. Hydrogen makes no sense to me, very low overall conversion back to power. Liquid air with heat storage is looking good though. The thing is we will be dependent on natural gas for quite a while yet even when a lot more wind and solar PV comes online. My feeling is they will build cheap open cycle gas turbine generators rather than the far more expensive (and thermally efficient) combined cycle gas turbines we depend on for all loads now. The perceived wisdom is they will then only fire up at peak times, the baseload still being provided by nuclear, Drax (unless it gets canned), imports from France and Norway plus the existing CCGT fleet (some of which will be turned off when wind is good).
  13. Yes I guess that @sime42 did mean drought.
  14. Long ago I was told wind would prevent UK growing tall trees but I haven't seen an open grown wellingtonia blown down. I have seen lots with their tops taken out by lightning.
  15. That then begs the question; what is an acceptable small battery saw that uses the same batteries as other portable tools? I discount Stihl as I have had a battery failure on the brushcutter the volunteers use and I want something common with power tools.

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