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Peter

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Everything posted by Peter

  1. With a remote you can stand as close to the machine as necessary, but you don't have to twist round to see what you are doing. Some machines have a fold out arm with the controls on so you can stand in the right place, and a perspex screen to protect the operator. Personally, I would rather have the remote.
  2. No, you just have to ring the call centre. They are reasonably efficient though. Whereabouts are you? In East Anglia shutdowns etc are now handled by UK Power Networks rather than EDF.
  3. The "insulated" abc type line is three strands. Don't rely on one thing, add up all the evidence.
  4. Bundled data lines are in pairs, power lines are in threes. Power line poles should have warning signs on, telephone poles have footholds on. Power lines have insulators, phone lines don't.
  5. But a predator can go wrong. Just as woodpicker.
  6. The 352 is an ok machine. With the outer wheels off it is 35 inches wide, so you can get it through most gates. It is difficult to see the grinding head if you stand where you are supposed to, so you end up using it like the guy in the vid, with your left hand on both levers, at arms length. Gives me neckache tbh.
  7. Tut tut CharlieH.
  8. Just bought a length, can't really comment on its performance or longevity yet, but it does splice nicely.
  9. Peter

    Poison

    Enterprising fellow here! TREE STUMP KILLER COPPER NAILS 1 1/2 INCH 38 mm x 30 | eBay UK
  10. Peter

    Poison

    TO UNDERSTAND the potential impact of embedding a poece of copper in a tree trunk on the long term health of the tree, some basic plant physiology and chemistry needs to be considered. In order to kill a tree, a toxin must interfere with cell division in the regions from which a tree grows - root and shoot tips and the cambium, a ring of dividing cells inthe stem and roots. In addition, inhibition of a vital process such as photosynthesis will have a similar deleterious effect. Implanting a piece of copper in a tree trunk will only affect such vital processes if the copper is transported from the implant to the roots and shoots. There are two routes that copper could take. The first is in the xylem, the woody tissue that forms the bulk of the tree trunk (wood) but also forms the main transport route for water from the soil, via the roots to the leaves. Movement here is controlled by the rate of water loss from the leaf and this process is regulated by stomata on the under surface of the leaf. Materials move passively with the flow of water, although those with a positive charge will fix to negative charged sites in the walls of the xylem tissues. The phloem tissue (bark) is highly specialised and is responsible for transport of products of photosynthesis from leaves to shoots and roots. It can rapidly seal off any injured tissues. Copper from an implant would need to dissolve before it could move to roots or shoots and affect plant vitality. The pH of the phloem and xylem sap is slightly acidic (pH 5 - 6) so some copper would slowly dissolve. Copper binds preferentially to the xylem tissue and shows limited mobility as a cation. It readily forms stable organic complexes with small molecules such as amino acids and appears to move through the xylem in this form. These complexes are very stable and may not dissociate at the end of the transport pathway. If so, these will not easily pass across biological membranes and inhibit metabolic activity. Copper movement from leaves, via the phloem is very slow so the redistribution via this tissue from an implant would also be slow. The slow rate of copper release from a metallic implant would be unlikely to cause significant problems for a healthy tree. As the main route to living tissue would be via the xylem, the patterns of water movement within a tree would also be important in the subsequent transport of copper. These vary with tree species - in some water ascends straight up whilst in others, water movement occurs in a spiral of verying pitch. Several implants would be required to make certain that all parts of the tree crown were reached by copper. In conclusion, I would consider it unlikely that a single copper implant would prove fatal to a healthy tree; an old or already debilitated tree may prove to be more susceptible. (Professor) Nicholas W Lepp, Professor of Plant Sciences, Liverpool John Moores University, Byrom Street, Liverpool ([email protected])
  11. You need 30 yorkshiremen willing to part with £50? Good luck with that!
  12. Er, no. Did you not read the poster?
  13. Dunno, Tom D is the man to ask. The number of stupid high mileage defenders there are out there, I would have thought it would be the ideal choice.
  14. Peter

    Poison

    A while as in until the tree dies of old age, totally unaffected by the copper nails?
  15. Why not go the whole hog and get a defender?
  16. The only firm I know that almost guaranteed to have your Stihl spare part in stock for next day delivery is Dick Leigh.
  17. Basket RGQ 18.
  18. How much do you actually need to tow weight wise and as a proportion of mileage?
  19. Yeah, I totally agree. Felt a bit rude getting inside without even buying her a drink yesterday.
  20. Test drove an amorak the other day, nice drive but I don't think it's a heavy duty tow tug by any means. Great for high mileage motorway cruising though. New ford ranger is supposed to be the mutts for towing, but it's not out yet.
  21. That mewp is the most complicated bit of machinery I've seen in a long time. Just tracking it off the trailer needed a 20 minute tutorial.
  22. It is hard to explain, but it works. As David says, try it!
  23. I'm sure if you all chip in for a plane ticket it could be arranged!
  24. Treeworker.
  25. Really good news mate. I can wholeheartedly recommend Nods workshop to anyone interested in splicing, whether you've already done a bit or a complete novice. Even if you don't want to do lots of splicing, it will give you a good understanding of what is inside the splices you trust your life too.

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