Jump to content

Log in or register to remove this advert

openspaceman

Veteran Member
 View Profile  See their activity

  • Posts

    9,235

  • Joined

  • Last visited

  • Days Won

    5

 Content Type 

Everything posted by openspaceman

  1. openspaceman
    As far as I know you only need additional lights if the load obscures existing lights or the load extends 2m past the existing lights.
  2. openspaceman
    It will need to move with the wind in order for the new growth to form and put strength in the right places.
  3. openspaceman
    It looks like there's enough intact bark on one side for the tree to survive if it can put on enough callus to withstand breaking off.
  4. openspaceman
    It's a fair parcel for a small woodland but maybe not for the big estates and FC. The bit about the part load is a good point, I used to teach that the part load would often fall in value to the next (lower) grade in the assortment. e.g. a remaining part load of beech seconds (for framing) would have to be sent in with mining timber, it was often only fetching 25p/Hft over mining timber when that sold at 50p/Hft.
  5. openspaceman
    These people were very helpful to me Controls Hindle Controls but on a different machine. If they are simple Bowden cables then our local motorcycle shop gets them from Venhill Engineering Limited
  6. openspaceman
    This latter need not always be the case but it will put buyers off. If you are prepared to sell the second lengths delivered in with some beams as long as the mill can get some posts or scantling off them they were still worth £2/Hft+ and selling off butts at £4/Hf (all 1990 prices as I've been out of it a long time) meant you had to do your sums before making a decision. The mills that want planking butts will normally sell off the second lengths to another mill. Yes they tended to be separate markets Lots of beams less than 500Ht are more attractive to people with mobile mills and decent oak through the log seems to attract £3.50/Hft
  7. openspaceman
    I agree with that having seen them taken to some amazing side inclines. I've never seen or tried a Bandit. The Forst is let down by its tracking but no problem for short runs.
  8. openspaceman
    The problem with simply winching it upright is that the soil will have moved and this will create a fulcrum to stress the roots which are simply bent atm. I'd excavate a trench to relive this and backfill with something the roots will easily regrow into. Also keep any guy as near the bottom as you dare. Yes it looks well doable.
  9. openspaceman
    I remember the older McConnel flail hedgers had a simple make up valve that enabled them to run the pto pump using the linkage pump in parallel, if you do something like this ALWAYS return flow to tank into a zero back pressure point and NEVER via a spool valve. It also should return at a point below the oil level. The difference between running a flail and the splitter is that the flail always returns the same as what it takes but the splitter will be returning less on the out stroke so the linkage pump would have to supply the difference to prevent cavitation or sucking air. Assuming constant pumping open circuit system: Using0 this means the spool valve should not be a regenerative type.
  10. openspaceman
    It sounds like quality timber. I found if there was a decent proportion of planking buts or beams it paid to sell them presented at stump and dressed out. If possible remove any that are too poor for sawing from the parcel. Measure and list each stem. The invite 3 or 4 buyers to make offers. I've been caught a number of times by "friendly" buyers wishing to uplift and pay on monthly account. I also found there was much less ground damage if I undertook the extraction, which is often not a high portion of the value, even a farm tractor can pull 1000Hft a day off an easy site. Fencing oak or framing beech I would just deliver straight in to a mill. Buyers of the better grades still seem to be out there, Chantler, Whitmore, Vastern, EW at Cocking, Wests, the chap on here from Bedford and many more but you won't be thanked for asking them all to have a look.
  11. openspaceman
    No, the carb is protected by the fuel filter in the tank and as I said there is a gauze filter in between the diaphragm and the metering chamber, I cannot think of any way the diaphragm could be damaged by contaminated petroil. I can see how water in the fuel would cause this problem. Did the dealer strip the carb to show the damage?
  12. openspaceman
    I don't subscribe to this view, I know clients specify them but this is often only to have proof of application. A competent herbicide application is far cheaper and just as effective, even using relatively benign chemicals like ammonium sulphamate when it was allowed. It could be done without needing extra tools and far less labour. They have taken off in the utility sector because of the lack of professionalism of we in the industry. At 50p a shot these things are expensive for the amount of active ingredient they contain and what happens to the plastic when the stump rots? They are a triumph of marketing over good sense.
  13. openspaceman
    Which is interesting in itself as PUWER also brought in a code of practice for woodworking machinery and I cannot find exemptions for the requirement for braking to bring the machine to a halt within 10 seconds, did we get one for outdoor equipment?
  14. openspaceman
    I wasn't being accusitorial but rather suggesting there are lots of ways to slip up when starting out with a saw. I remember picking up and trying the Danarm 110 for the first time and wondering why it wouldn't cut straight. I did not realise the significance of even a slight nick in cutters on one side or how much filing was necessary to get it back on form. I wasted a lot of time and my money learning the business from scratch as I couldn't get a job, which is why I advise people to work for a firm for a couple of years and let the boss pay for mistakes
  15. openspaceman
    I've not known this to happen though I have found saws used (and filled) during wet periods to have a dirty brown scum form over the filter between the pumping diaphragm and the metering chamber, effectively preventing petroil from passing. I also don't know what dealers charge for labour but a carb kit is only about £20 and an hour's work to fit. With experience comes understanding, you may well have slipped up without realising, also as most saws are incredibly reliable dealers tend to be a bit suspicious of warranty claims.
  16. openspaceman
    You'll have a struggle buying it in any quantity nowadays. It's the oxidant used in making gunpowder. It will add nutrient to the wood and decrease the carbon:nitrogen ratio, thus theoretically making it attractive to rotting microbes but the main reason for adding it was to cause the stump to burn.
  17. openspaceman
    I climbed back in the cab of a valmet forwarder today, didn't fancy spending a day back there and I'm a bit younger than you. Anyway another lesson I learned early on is if loading shortwood load both bunks. The danger in only loading the front bunk of my botex was that on a downhill turn the weight transfer was enough to lift the opposite side bogey and tip the trailer.
  18. openspaceman
    Log burners in domestic properties always needed to have vented systems with the F&E tank as near vertically above the stove as practical and a 22mm overflow to the tank. The reason being that if the stove is fully stoked it must be able to get rid of all the energy from the logs by boiling off water and the water loss must be made up by a separate feed from the tank. There have been recent changes to part J of the building regs but I have not kept up. The pellet lobby argued that as such a small amount of wood was fed into the burn pot there was not as great a risk from boiling over in the event of a pump failure. On larger scale systems the thermal mass of the thermal store was considered large enough a buffer to prevent boiling. There are many reasons to prefer a pressurised system from a plumbing point of view. A way to combine a combi with a wood burner would be to use a plate heat exchanger into the feed of the combi if it can accept hot water.
  19. openspaceman
    I doubt it, traditionally it was air dried from mid winter to gradually lose the water in the cells, to about 25%mc As it is cold and humid the water leaving the surface is slow and the moisture content through out the log stays about the same as drying takes place. It's as the wood falls below this 25% that it shrinks, mostly tangentially, next radially and only a little longitudinally, at this stage what becomes important is not letting the outside layers become drier than the core such that they shrink more than the middle and pull a tear. The kiln has a controlled humidity which ensures the wood stays in equilibrium over all its parts whilst having an increased temperature to aid migration of moisture from the middle to the surface.
  20. openspaceman
    A John Venables had a chainsaw shop in Ewhurst for a while, about 30 years ago. If he rebadged the clothes then Penny Allanson-Bailey at Richmonds may know the origin.
  21. openspaceman
    Exemption for 100km only applies to agricultural/forestry work, otherwise it's 50km if GVW is >3.5 tonnes the items being carried are used by the driver in the course of his work.
  22. openspaceman
    Sounds like most of our UA blokes, did he also have the congenital deformity of a spur attached to his ankle?
  23. openspaceman
    The point being that many stoves are just boxes where single skin metal surface is the only heat exchange. stuff a few baffles in the bottom and temperatures are maintained, flue gases thengive up heat to the top after combustion is complete. A back boiler low in the stove removes heat before combustion is complete because water is some 400 times better at carrying heat per unit volume. A properly designed back boiler and wood burning are contradictions in terms as the boiler bit needs to be after the combustion chamber. This is different from coal burning because of the different ratio of volatile gases given off so most of the heat is from secondary combustion.
  24. openspaceman
    There are three Ts you need for a for complete combustion: Turbulence, the gases must be able to mix well enough to ensure an oxygen molecule meets a fuel molecule. Time, the gases must have enough time to complete their reaction before they get too cold. Temperature, the reactions will not complete if they are quenched. This last one is what a cold spot in the combustion chamber can do. An illustration of this can be done with a candle and spoon. A candle wick is self optimising in that it is designed to curve out of the flame, where it is protected from oxidation, outside the flame it burns and so its length remains constant and the flame remains clean. Hold a spoon above the flame and it too remains clean. Lower the spoon into the flame and it robs heat, becomes a cold spot, what happens to the spoon?
  25. openspaceman
    As I understand it if you can prove the device complies with the current regulations, which is done by composing a technical file, a person wishing to market the device can sign a declaration of conformity (which should not be done lightly) and then CE mark the device.

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

Articles

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

  I accept