Jump to content

Log in or register to remove this advert

openspaceman

Veteran Member
  • Posts

    9,516
  • Joined

  • Last visited

  • Days Won

    5

Everything posted by openspaceman

  1. I think most votes go for this type of containment, I've no experience of it but see plenty of hardstands under trees locally so I think it would work. I like the idea of pea shingle rather than limestone scalpings as this will be an acid soil and pea shingle will not leach calcium ions into the soil and alter the environment for the tree roots. I would talk with the highways people to try and prevent further erosion from vehicles mounting the kerb.
  2. I take it the main flow controls the slew, boom, dipper, extension and crowd and the auxiliary is just for implements? What are normal main flow pressures and how much less is the auxiliary?
  3. Some breeds are naturally polled (hornless) but there is a genetic link between some desirable trait and horns IIRC, so while our hereford cross animals were hornless the pure friesans kept as herd replacements were not, so were disbudded. In the days of milking in stalls horns were not a problem but once they were in a proper milking shed the horns and aggression in the confined space was a problem. Also memory from 45 years back when I last milked a cow.
  4. I may well change my mind about not replacing my petroil powered hedge cutter after my day today. The local Ramblers group volunteered to clear a 800metre path that had become overgrown such that it was impassible. As the highway authority have abdicated their responsibility to keep it managed there was no other option. The HA supervisor accompanied us and provided two KMA 130 R power heads with triblade cutter heads, the gear heads did look a bit anorexic but didn't break. The back pack batteries were the AR 3000. I was well impressed as the cutters were light enough to use at any angle and would cut woody side growth of 10mm as well as mow grass and bramble. The HA would only allow an operator 1 hour trigger time so each only ran for 2 hours ( there was noticeable vibration as one was holding the trigger and front handle mounted on the pole, with a normal brushcutter this is better isolated by the handles and grips). Conversely this holding arrangement gives far better articulation of the cutting head. We had the luxury of a couple of volunteers acting as banksmen and raking up arisings 5 m to the rear. Normally I would use a mulching cutter on the FS 360 to avoid the need for clearing up. So I would be happy to use this in place of my long reach hedge cutter and as a short polesaw, I don't think it would replace the power of the mulching head on the 360. I think someone said the attachments for my defunct ryobi lend out saw can be made to fit so I am considering having a punt at the KMA 130 R power head at 250 quid plus VAT but I wouldn't lash out on the big battery as I'd only need 1-2 hours trigger time. Not sure what battery and charger combination to choose though.
  5. It's not something I have come across but you have to consider who you are contracting with, if it's the owner you accept instruction from them and they pay you, they then reclaim from the insurer.
  6. I didn't read it as that; there is a vast range of skills and intelligence and everyone settles into the niche that fits them. The most intelligent are not necessarily the most astute or cunning so no reason they should become richest. Everybody has to live no matter their skill levels.
  7. I should do my late sister lived 3 houses up and @Deafhead and I quoted for my first elm felling job on the field at the back , but didn't get it. Yes, my daughter's but he's a mongrel.
  8. I think he will need to scrape off the mud and get a reasonably level area and lift the paved path to the front door before deploying the teram and cellweb. At least drainage is not an issue being on a hillside. The soil is sandy and has good bearing capacity, many older houses only have 60cms footings here. The thing I notice is that the front of the bank has been eroded already by lorries mounting the kerb to pass cars on this narrow rat run. At least the oaks are to the north of the property so shading is less of an issue but they will have grown quite a bit in the last 60 years. I wonder if @Deafhead is reading this as he an his father may well have built the original house prior to the extensions.
  9. I've mentioned this several times before; as you say the oil is foaming because air is being sucked in. With cold oil this can be from a seal failure somewhere but also that the oil in the tank is being sucked into a vortex because it is viscous, just like the vortex when the bath water goes down the drain, the air then get sucked down the middle. So the oil should be circulated at low rpm for a while to get warm and less viscous. The other thing is that the oil may be being returned above the level in the tank and entraining air as it splashes around.
  10. Yes, capitalism has been the first system that mimics human evolution, it builds on previously created exploitation of all resources and leads to economic growth. This is how people can gain vast wealth without resorting to warfare. Unchecked it means the devil takes the hindmost, it also means the also rans are simply exploited and then discarded when they no longer contribute. My question is where are we going that we benefit from unlimited growth, it's plainly not possible to last indefinitely, at some stage we have to sit back and consider how we sustain the planet, population and economy. Given that pure capitalism is not acceptable to any but the most successful we have created laws to regulate it to enable the bulk of UK dwellers a decent quality of life but it's a complicated system to police. In the meanwhile the people at the top of the pyramid have a propensity to consume resources and pollute to much higher degrees than is good for our environment.
  11. @Justme will know chapter and verse but there were changes for people passing their test after 2013 but they still allow the towing of a trailer up to 750kg, the total MAM of 3500kg applies if the trailer is greater than 750kg MAM in which case the MAM of the vehicle plus the MAM of the trailer must be less than 3500kg.
  12. They cannot fix it any more than they can fix the current problem simply because it is the result of a poor government policy decision over 30 years ago.
  13. Yes our steel tipper bodied LDV with the Duratec engine weighed 2100 empty but with half a tank of fuel. None of our mk 6 or 7 transit tippers were that light and the two arb bodied ones where 2700 unladen.
  14. Doh you can tell I've been retired 3 years. I was used to seeing SSoW, safe system of work
  15. I cannot help but do you mean a Ramsar wetland?
  16. As @Dan Maynard pointed out I had done a rapid calculation on the gross torque figure given by the OP and that torque has to rotate the whole weight of the main boom, dipper, rotator and grapple and lift the load at the distance from the hinge pin, resulting in a much reduced weight of log. As I said my cranab 4510 (45 years old now) will lift 2 tonnes close in if the tractor doesn't fall over.
  17. I was thinking strimmer damage had let something nasty in, then wondered if a herbicide had also been used to screef those bare patches around the bases.
  18. Before the days of synthetic oils I changed from the blue Husqvarna oil to the red Stihl oil just because I could see the pink mix more easily. Now I have trouble seeing the Stihl ultra green and would move to a red synthetic too.
  19. Twenty years ago I was developing clean charcoal making, mainly to reduce the pollution and low thermal efficiency of making charcoal for cooking. At the same time scientists researching soils were talking about some fertile areas in the am'azon which appeared to have been be modified by humans, "terra preta des indios". These soils had a large char component and were produced centuries ago. So people looked at reproducing this terra preta to increase fertility and restore damaged soils in the tropics. An ex pat, the late Peter Reed, coined the term biochar to differentiate char used as soil amelioration from that used for cooking. As we were made more aware of the significance of increased CO2 emissions the second benefit of sequestering carbon by breaking into the photosynthesis to decay cycle and making a portion of the biomass recalcitrant became appealing.
  20. Yes, because they imbibe less air fuel mix so that the first slug out of the transfer port is just air, and hence less fuel:air mix exits the exhaust unburned it follows that less lube passes through the system for a given duty cycle, so I too thought this was the reason for needing a higher quality oil.
  21. It was all we had in the 70s but by mid 80s I came across army abseil rope, I'd never thought about SRT until reading here.
  22. Who are the "them " you refer to? We have had a solution proposed, which I have followed and supported for the last two decades. It doesn't fit in with current economic systems, actioning and verifying it is possibly beyond the ken of governments. Carbon exists in the ground as fossil fuels and rocks. there are estimated to be 16000 billion tonnes there or under the deep ocean. It all derived from living organisms. This is all in a long term geological cycle unless we dig it up and release the carbon as a fuel or to make cement. Similarly there are rocks formed from volcanic activity and buried which will absorb CO2 if they are exposed to weathering. Geoengineering solutions want to go down the path of mining, crushing and scattering such CO2 absorbers, I consider that a dangerous route. Currently terrestrial photosynthetic activity cycles about 120 billion tonnes annually by fixing carbohydrates during photosynthesis and releasing about the same as it dies and rots. The oceans similarly cycle about 90 billion tonnes annually. As humans started managing their environment thousands of years ago they cleared land for agriculture, this reduced the above ground biomass carbon content but as we know the increased release of carbon really took off 200 years ago. When I was at school we learned that as CO2 in the atmosphere increased it favoured plants which stored had superior ability to utilise sunlight. These should have had the ability to keep more carbon as living biomass, and they do for over half of the carbon we are setting free. However currently fossil fuels are releasing 9 billion tonnes back into the atmosphere of which plan and marine life is only managing to buffer 5 billion tonnes over and above the 210 billion tonnes of their exchanges with the atmosphere and oceans, plus as 45% of the carbon in the surface cycle at any moment is in an equilibrium between surface ocean and atmosphere marine activity that would form chalky sediments is reduced as CO2 in solution tends to make the ocean less alkaline. To my mind intercepting some of the 60 billion tonnes that would rot and decay back to CO2 and water and making it recalcitrant and burying it could be done anywhere on the planet where crops are grown or timber harvested. At the turn of the millennium an even more elderly friend of mine hoped before he died he would witness the first billion tonnes of carbon returned to the soil in this way, it isn't happening or likely.
  23. I'd take issue with that too as one of the reasons healthy ash will barber chair is the high strength of the hinge
  24. They'll be around 3A, what is the granberg motor drawing? A power supply from a gaming PC will be up to 20A at 12V Many car battery chargers will only start if they see a battery so you would need a small gel six cell in the circuit.
  25. That'll be why they made axe handles from it then ? I felled some large affected ash last week, 60% crown dead, and there were definite signs of something strange in the basal cross section. Whether it was a secondary infection or signs of the chalara infecting the whole sapwood band I'm unsure. The hinge was still as normal.

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.