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openspaceman

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Everything posted by openspaceman

  1. openspaceman
    I can't quite put my finger on why I find this video attractive, yet another reason to revisit Belfast and the Antrim coast one day.
  2. openspaceman
    There are a number of things that limit how moisture leaves a log, one is the distance it has to move through the log, while a log loses most through its ends a split log can lose it through the sides. Bark is near vapour proof so a long length with bark intact means the water all has to move to the end and then evaporate, severely limiting how fast it can dry. In the limit with something like birch rotting will take place and as the end products of decaying wood are water and carbon dioxide the water content of the remainder is maintaining conditions for decay. Another limit is the moisture saturation (relative humidity) of the surrounding air, cold damp air doesn't absorb much moisture. If you heat air its relative humidity goes down and it can absorb more moisture, the higher temperature air also transfers heat to the log which increases the speed with which moisture can reach a surface.
  3. openspaceman
    I agree My worry with that approach is that the branches are over mature and there may not be adventitious shoots to form new growth. Once beech gets into middle age it doesn't coppice well, not sure about pollarding.
  4. openspaceman
    Cheeky bit of turf, you'd only pay for a written report if you intended taking someone to task for the damage.
  5. openspaceman
    He took your advice @Stubby because the thread I replied to was "Posted in Wrong fuel mix"
  6. openspaceman
    Tidy looking planking butt but for that rot pocket, nice prep and felling too.
  7. openspaceman
    Having jammed a clutch by snagging red baler twine I'm wary of cutting any ropes or fabric with a motor saw.
  8. openspaceman
    Very unlikely not to have done some damage. Pop the exhaust off and have a look see if the ring is free in the piston and no smearing or scoring, it nearly always affects the exhaust side first. You may be lucky and with fresh petroil in it it will run but take it gently.
  9. openspaceman
    Quite and I'm unsure what shock loading the body can survive, of course the body will deform to some extent and thus absorb energy and reduce damage elsewhere. In this case the OP is concerned with the shock loading on the anchor point. When I was a child fatality from minor car accidents were common so ROSPA, IIRC, attended local shows with a demonstrator to encourage the use of seat belts. It was a car seat and belt on a tilted rail such that the seat came to a sudden stop after accelerating down the short ramp and reaching around 5mph. The shock loading was hard enough even at that speed that a normal person would have had difficulty in not being thrown out of the seat without a belt on. Of course in most accidents the vehicle deforms somewhat and absorbs energy but a static climbing line...
  10. openspaceman
    If it absorbs shock on the body it also reduces shock on the anchor. The point of the simple ones is they rip stitching and in doing so slow down the body as the breaking the stitches absorbs some of the kinetic energy of the falling mass, they spread the smaller force due to deceleration over a greater distance. As tension in the rope is the same throughout this force is also reduced at the anchor.
  11. openspaceman
    You should also deposit a landowner statement under section 31(6) of the Highways Act 1980 with the planning authority and review it every 6 years, this makes it clear you have no intention to allow any tracks on your land to become rights of way.
  12. openspaceman
    Much too modern for me, mine have the mechanical controls, even so the controls only active the clutches don’t they? the reason for not returning the flow via the tractor spool is that the extra restriction heats the oil and if there is excessive pressure in the return line it can damage seals in the control spool. Is the tank separate from the final drive oil in the A60? I would expect it to be return to the final drive case somewhere, ideally under the oil level.
  13. openspaceman
    Not a lot in difference of green moisture content between ash and sycamore. Prejudice against sycamore because it is non native is a bit over rated IMO Mould is simply living off the more volatile solids in the wood until it dries below 20% and not much to worry about, airflow is the answer.
  14. openspaceman
    How many of your customers use it as a primary heat source? My total gas bill including standing charges is less than half that per kWh yet I still burn logs. Most of the logs I burn would end up mouldering away in the corner of a field so there's a reasonable displacement of fossil fuel, I could also save about a kg of char a day in winter if I were a bit better organised and use that in the garden to offset about 35 miles of motoring carbon emmisisions.
  15. openspaceman
    £93/cube is equivalent then
  16. openspaceman
    Not for me as I don't pay for my logs and I quite enjoy the few days it takes to cut and split. What weight do you allow for a bulk cubic metre of logs @ 20% mc? The pellets will have 900kg of dry wood at 5.3kWh/kg so ignoring combustion efficiency and extra steam up the chimney about 6.3p/kWh
  17. openspaceman
    It depends on how suddenly the falling object is arrested, if there is some flex in the system the force is less than a sudden stop. The terminal velocity from that drop is time=0.5gt^2 so ~0.2 sec acceleration is gt so about 2m/sev Force on the system =mass times deceleration so the faster the stop the higher the loading
  18. openspaceman
    Photo doesn't show how weepy it is but I suspect a graft of Dawyck beech No I'll correct that Dawyck is the columnar one and I have forgotten the weeping one
  19. openspaceman
    Much the same here, we brought them in at £70/tonne as dunnage between the stoves in the container, the intention was to make them in Bridgend from the waste from the technoboard plant but they folded. Mine sits in the shed now.
  20. openspaceman
    I think you mean you cannot lawfully because it's pretty plain people can do it. In fact for domestic premises you are allowed to burn lots of things that you shouldn't burn commercially, as long as you don't emit dark smoke. Not that that's a good thing but must be something to do with ancient rights.
  21. openspaceman
    That is if there is a linear relationship of moisture to conductivity. Thing with resistances where there are multi-paths with variable resistances in parallel it gets a bit complicated so I though probably a look up table and empirical results. BTW that last FC leaflet shows the pellet burner we first imported in our Welsh unit near Bridgend.
  22. openspaceman
    If we take fresh felled 1tonne beech at this time of year, drop it in water and it sinks. It contains 52% wood and 48% water. Dry it till it weighs 2/3 its original weight i.e. 666kg and we have 520kg of wood still but now only 146kg water, so 22% mc wwb actually not quite dry enough but close.
  23. openspaceman
    I don't wear mine unless the ground conditions are bad or I am using a motor saw (any sort) so they have probably only had a years solid use despite having them 6 or 7 years. As I don't climb (well maybe a little) I take it the airstreams wouldn't suit me? I am sure I read somewhere that the woodwalker build had changed for the worse but they remain reasonably cheap.
  24. openspaceman
    We have mostly known that all along, the point of the thread I thought was deciding which moisture meters measured on the wet basis and I don't think we have found one that does yet. If we put aside poplar, elm, willow and softwoods then the worse case hardwoods are oak and beech, if people have crane scales then one could be fairly certain if 1/3 of the green weight is lost the average moisture content will be below 20%
  25. openspaceman
    Not noticed much, biggest difference is in waistline and bank balance after 4 years

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