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openspaceman

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Everything posted by openspaceman

  1. That's a tariff of 31 and a tree with a dbh of 43 should have 1.38m3 overbark
  2. Me too but in my case its the pink bamboo and shrimp net from my granddaughter's seaside trip.
  3. I'd use a grapple loader but in the absence of that what about scaffold poles made into an H frame, straddling the trailer wheels. Two close spaced poles under the front trailer wheel for the first bag and roll forward for the next. Bags hanging like a garden swing and then haul the top bar over to load. Like raising the side of a barn in a western movie, or indeed how a skip lorry operates. As a typical builder's bag has about 0.7m3 and 300kg wet I suppose a 1m3 bag would be 500kg worst case. Given a few dimensions and top stacking height a bit of trigonometry would give the maximum pull required.. Otherwise how about a simple gantry crane but consider loler
  4. I've worn hat, muffs and visor since 1974, in fact since I traded up from Danarm DDA110 and I didn't use that much. Tinnitus is the bain of my life and just reading this thread makes it more prominent. I've more than a sneaking feeling that chainsaw ear defenders aren't much cop for the lower noise from chippers, tractors and such but too late now, damage is done.
  5. Whilst looking for these pictures I came across the one of him posing next to the pine that was struck by lightning whilst he was snedding its neighbour, he'd not work in the rain after that. We reckon it was the induced current in the saw handle that knocked him down, otherwise unhurt. Incidentally I went and retrieved my 1164 and grapple loader today, about 6 months ago some scrote smashed the screen and nicked the main lift ram off the FMV290 so I need a replacement and they don't seem to be readily available.
  6. I'm no arborist, mine is a forestry background but if you consider the environment in which most gums have evolved it is subject to flash fires. It puts up a long initial shoot in order to keep its growing point out of danger but may not succeed first time, so it self coppices after the fire and second time it has a sturdier root system. In SE UK environment it seems to outgrow its root system which is why many gums develop a bow at the base. IMO it actually pays to coppice it at 3 years and then store a single stem.
  7. Don't know about conifer but small hardwood enough to knock the flashing beacon off a transit cab :-) These later ones combine the engine cooling flow with the chipper disc flow. Never seen a timberwolf nor looked at the greenmech fans.
  8. I'll describe our system just to illustrate problems, we use 500GB on 2 cameras 1 DVR and that lasts about a month, the compression is high so that whilst the cameras give a decent image in real time the playback wouldn't pass the driving test for eyesight. To my mind the biggest problem is isolating the incident when reviewing by playback so I think one of those pir wildlife cans would be a handy adjunct, I do use one on the site. I also think hot swappable disks would be handy. Most seem to feature a " record on movement" function but I cannot get that to work. It seems to be done by software analysing the screen. Playing back a day's recording at 8 speed is still 3 hours and you'll miss something. This sytem, of unknown make supplied used by our computer guy, has next to no functionality in remote playback. Do not use cameras with built in infra red leds, the back glare from spiders' web makes night views impossible, arrange a separate light source. I've just reviewed the bandwidth for remote viewing, and bearing in mind it only uploads about 1 frame from each camera in 10 secs, so you cam miss a lot even though it is recorded at base, in 47mins it has used 50MB. The big advantage is seeing a machine is where it was parked and a door is still intact.
  9. I suffered the same recently. Similar two puncture wounds, bruising and a blister. I had a google and decided on a spider bite but would be interested if you find out more. I know there is a colony of venomous american spiders in Bucks but I wasn't near there. I have a photo on my works camera.
  10. Here's one from around '82 I guess because we used trousers with kevlar inserts just about as soon as I heard of them and Tony is in jeans. countydual | Flickr - Photo Sharing! and this is from summer 88 after the storm 4510 | Flickr - Photo Sharing! I think I got the cranab in '84
  11. Yup found some but in an old album, I'll have to scan the page and then crop them. Mind I don't know how to post them.
  12. Not on a mog but had dual 12x38s on the 1124, made the thing 10.5ft wide!. I don't think it increased traction noticeably skidding but spread the load a bit. I did have some sidewall issues with picking up stones. This was with the original county cones rather than quick fits. The main advantage was on the steep bank I was working. In the end I just fitted 14x34 as the singlke 12x38 wouldn't cope with the cranab 4510 when I bought it.
  13. Pallet wood is normally considered to be a clean wood waste unless the wood is treated or painted, stained pallets (like those nice blue CHEP ones) are still classed as clean waste. Many pallet blocks are now reconstituted wood and these are not clean because of the glue used..
  14. Poor wood burning also produces carcinogens, the first documented industrial cancer was testicular cancer in boys who had been chimney sweeps. MDF is woodfibre stuck together and compressed with about 7% glue, plywood uses a little less. Nowadays this glue is formaldehyde based and if the burn is incomplete the PICs from this form into furfurans and phenol like compounds. There are appliances on the market that can burn these wastes as exempt appliances because they burn much hotter than an ordinary log stove. Oddly creosoted wood does not enjoy this exemption, which surprises me because it should also burn completely at high temperature. What should not be burned are those woods treated with halogens ( either as a fire retardent or pesticide) because at temperatures around and above 700C they can reform with the phenol like compounds into dioxins. Dioxins have the ability to replace the linking compounds in a strand of DNA. Similarly any wood treated with a heavy metal cannot be burned in anything other than an incinerator becuase of the volatile species emitted into the atmosphere for us all to breathe. Large incinerators use a number of techniques to scrub these from flue gas and their ash is deemed hazardous. As I said the laws for what a person may do with household waste are quite different from commercial waste/
  15. That statement is untrue, you would have to prove that the product made from waste has ceased to be waste. The EA have simply made a position statement about virgin biomass and clean wood not being considered waste if used as fuel. Not so, it is an offence under the clean air act wherever it happens and refers to domestic fires too.
  16. My guess is that it is illegal under waste transfer rules. If burned commercially it would be covered in the waste incineration directive. About the only rule that applies to burning in a domestic fire is to do with emitting dark smoke AFAIK
  17. The old tanalising was done with 5kg of chromated copper arsenate per m3. As the wood was seldom well treated often only the first cm into the wood and a bit more into the endgrain got a sensible dose. As these chemicals are elemental they have to end up either in the flue gas or in the ash. 1m3 of timber has about 400kg of dry matter of which <1% or 4kg is ash. So the ash can have a high proportion of heavy metal in it from a low burn. If the fire is hot then more will be volatised, inhaling it could cause serious problems, especially the chrome as it's trivalent in the wood and hexavalent in the flue gas. Later formulations are an organic salt of copper, less toxic to you and wood rotting bugs ;-)
  18. It's actually quite a poor firewood green and fairly difficult to split. It's fresh moisture content is comparable with poplar and spruce but once dry it is as good as most of the better firewoods. In the early 70s we burned a lot green and it needed a lot of encouragement to get a fire hot enough to burn fresh chogs. By the end of the decade we were felling hedgelines of dead 30 year old trees standing dry and dead and just lighting at one end. BTW I don't advocate burning green firewood for heating. AJH
  19. It was much undervalued as a timber, used in waney edge cladding as well as seat bottoms and of course butchers blocks on the end grain. Toward the end it was mostly used as pallet blocks. The last live large elms I felled were at RAF Kenley in 76. I imagine yours are little trees that have just grown large enough for the bark cambium and phloem to provide hosting for the wee beasties and the tree has reacted to the fungus they've introduced and killed itself. I would coppice and avoid transporting the timber if you are far north or near Brighton. AJH
  20. Are you meaning that it won't disengage? I.e. the clutch driven plate is stuck sandwiched between flywheel and pressure plate? Easiest way is to start it and drive it around in high gear with the clutch down, throttling up and down and stabbing the brakes. Safer is to jack both drive wheels off the ground and run in high gear and then modulate from Hi idle to idle with foot down on the clutch pedal. The inertia of the wheels over running should unglue it. I loaned a Holder out to an erstwhile colleague and he managed to jam the clutch, I'm guessing part of the friction material has detached from its plate and wedged over an adjacent bit, making it impossible to disengage the clutch as the fork throw isn't long enough. I've been threatening to fix it for several months now ;-(. AJH
  21. I'm not familiar with the box telematics device, though I did discuss trackers with them 10 years ago. I have used a chipper with the original tracker, this was well hidden and secure and used an external aerial, you did need to know it had been stolen to have the operating centre switch the VHF alarm on and there was an annual subscription. I inherited responsibility for 3 machines with cubetrak devices. These are tiny boxes with an internal battery that lasts about 3 days and a separate charge feed from the vehicle. None are well hidden or securely fixed, so could be smashed off and discarded easily. They report position via a central webserver which has been flaky, I have seen a machine enter the yard recently with its position being reported as 10 miles away for the next 12 hours. This system uses a PAYG SIM and sends sms alerts when moved beyond a set radius. The last known status of speed, battery, reception and position is shown on the web interface, as well as movement history. It uses data and sms credits to upload to the web interface and can be set to report in intervals from seconds to days. It is prone to report false positives and these use credits. If it isn't moved or doesn't exceed a set speed it won't update and hence doesn't use credit or data. The problem is this can give a false sense of security and it may have simply logged off without one knowing. Later versions with the vodafone data sim can report that they are logged on to a cell tower, which is a good check that they are live, unfortunately this is again done through the supplier's web site and is flaky. I have one satrak fitted by plant security, I have to say their salesman was persistent but aftersales has been pants, cost was 700quid inc. It uses a PAYG SIM and there are no subsciption costs and you have direct control of the device. This unit lasts about 3 hours after it has been disconnected from the vehicle battery (which may be an internal battery fault), it will send an sms if it senses overspeed, vibration, low battery or ignition. It also immobilises the vehicle. It can be interrogated by voice call or sms but the data returned is in a bizarre order. The GPS is insensitive, on a recent 50 mile trip it never got a fix and has remained in a asbestos reinforced concrete roofed barn over Xmas with still no fix and reporting itself 50 miles away, it does state it is an old position. The satrak has the facility to set a schedule, outside of which it will not report any of the alarms and hence not use sms credits during the working day. Again strangely this schedule does not automagically disable the vehicle via the immobiliser but it does enable it, again this may be a warranty fault. The sim does not report the cell tower it is connected to. I have never been close enough to this machine to attempt to start it to see exactly what the limitations are. A number of my colleagues have trackers on their sports cars, none seem to understand how they work, they get an sms if the vehicle is entered, cost a couple of hundred quid a year to subscribe to the system and about 400 to fit. What I think is needed is firstly a good immobiliser integrated with a brake, most tracked chippers have this by default in the track motor, next is parking where a hiab lorry cannot get alongside. Next is the tracker which should have a means of checking it is logged on and functioning without using too much credit. Satrak ticks most of these boxes but any android smartphone has all the functionality if I were bright enough to write an app. It goes without saying that cellphone reception is at least an order of magnitude better than GPS. A fundamental problem with all these GSM devices seems to be if they are out of reception and the thief has time to locate the device. AJH
  22. I tied to pm, I know of one in Hampshire for sale.
  23. I'd avoid using ash directly because of the abrasiveness making the glass more suceptible to staining. If you pecolate water through wood ash you get a mild potash lye which dissolves tars. It's a bilt less aggresive than caustic soda used in oven cleaners. If your forget the marigolds and your fingers begin to feel soapy its your fat reacting with the lye making soap.
  24. Pit burning would be as fast and still yield the biochar. We made charcoal very fast using lop and top from oak felled in March and carbonised in May and 50% riddled out to lumpwood spec. I've made good biochar by reconfiguring a 500kW Kob, problem is finding someone willing to buy and use the stuff. Strictly speaking it's use is limited to domestic properties.

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