openspaceman

Brilliant thread, I so wish I had taken more photos all those years ago. What it does demonstrate is how bad I am at underestimating a tree's age.

Yes I'm looking at this for a friend and Voda do a bundle unlimited talk with 1GB for £20/month capped so you cannot exceed the limit and this will be far cheaper than BT plus broadband for his use. No good for me as we use 10GB/month between us. ... and yes TalkTalk is pants, they have a contract break clause (when they announce a price rise) which I took advantage of and they still tried to bill me for the remainder of the contract.

The main thing is to keep your underwear free of the contamination, and wash oily hands before taking a piss, it seems to be fairly specific to younger men. I knew a biologist who had some sort of job for Wills tobacco, despite denying that cigarette smoke was a cause of lung cancer their motor shop apparently had a sign warning of the dangers of used engine oil, this would have been early 70s.

No I don't think so but inhaling a mist of it would do no good, I think most ends up absorbed onto the sawdust. Anyway I use food grade osr. The carcinogens are PICs that have been dissolved in the oil on the cylinder walls, they arise because the combustion never gets to completion in the same way that the smoke from a cigarette is incomplete, otherwise there would be a flame presence rather than the red glow of just primary combustion.

Yes it's the breeding galleries of a beetle or weevil, the main gallery is where the eggs were laid and the ones running away are as the grub feeds itself on the cambium or phloem before emerging.

I cannot comment on your zip file as I haven't opened it but look at this Europe's Green-Fuel Search Turns to America's Forests - WSJ.com As I understand it Drax cannot meet new standards for burning coal but get FITs for burning wood. EU laws generally prevent wholesale clear cutting US don't, if you cut for logs you end up with offal. Pelletise the offal and it's cheap to ship, is only 1/2 the density of coal ( so not much derating of generating capacity) and can go through the pulverisers which woodchip cannot. Meanwhile we cannot get rid of chip locally so export it to France.

That's right, the first identified industrial cancer was in boys used for chimney sweeping and it made a re occurence in young motor mechanics, it seems their sump oil covered overalls were causing scrotal cancers. It's the products of incomplete combustion such as the carcinogen benzo-a-pyrene that cause the problem. In 1976 we were forced to use used sump oil and your clothes stank of it and were covered in arbrex thanks to the old skinflint that ran BCR. Luckily I only survived a few months. I doubt the lubricity is much of an issue though increased acidity could be.

Makes sense, it allows his mistakes to be paid out of someone else's wallet. My early gaffs cost me a small fortune and I'm too shy to say what they were.

Duh, well spotted I shouldn't have missed that

I don't think Caravegge used Cummins, just Iveco, Hatz and Kubota 40-60hp

I think it's one of the Caraveggie shredders made in Italy and imported by Arboreater. Has it an air cooled Hatz 3 cylinder engine? Basically the chamber contains some flailing hammers and the green waste travels down the one side and then after the hammers have shredded it small enough it passes the screen travels up the conveyor (output and input are swappable). Good for things like brambles garden waste and horticultural waste not really capable of shredding chunks of wood. If the hammers don't swing freely it is an interesting few ours with a hammer and oxy propane torch to free them. Spares are available for the lovely Lucy but expensive.

The species are not ones I know but my guess is lodgepole is close to scots and corsican. If you use 15.28" (12"qg) as a diameter and a length of 27.736 it gives 35.32 cu ft, which is as near as damn 1m3 and this is also the measurment of a 12"qg log with27.736 Hft, so that all fits between Hoppus, imperial and metric. It gives a green weight of 1377.48lbs which is 624.8144kg and I would have said scots pine would be 1000kg green.

I see from the website it's listed at 1800kg but is this a dry weight or with all working fluids? I need to hire one and it will need to be lifted into site, the hire company cannot confirm the weight for a lifting plan for the crane company.

25% is barely dry in this context, it will still sizzle. The test is to split a small bit into many pieces and stuff them tightly into a bean can with a few holes in the bottom such that the tops are level with the lip, pour a teaspoon of barbecue starter and light the top. If you end up with the pyrolysis front moving down and a clean flame then it#s fairly dry. The twin retort that you linked to was revived in this country by a guy called Robbie Webster copying a south african design which I think was itself a crib of the Lurgi from before WW2. The method doesn't appeal to me because of the wasted heat and poor heat exchange surfaces. PM me if you want to try a couple of simple experiments.

The main thing is to use very dry wood, the reason being that the actual process of pyrolysis ( splitting wood with heat) is very nearly neutral in energy input ( i.e. slightly exothermic between 330C and 440C) that all the energy needed is to raise the charge to that temperature. However boiling water away first is rather energy intensive, the steam you drive off contains about 0.75kWh(thermal) for every kg you drive off and in practice even with good heat exchange you'll need double. That's about 30% of the energy in 1kg of dry wood. Much better to let the sun do most of this ( but there are ways around) If you use a barrel in a tank method simply invert the filled barrel with a leaky lid into some sand or ash, this is to allow the gas out but not allow air back in as the charge cools. A russian guy, Yury Yudkevitch, developed this using multiple barrels as retort. A retort keeps the fire outside but its disadvantage is all the heat has to be delivered through the sides. Yury has the fire surround the inverted barrel which once it gets hot the offgas exits the bottom and joins the fire to continue heating the barrel. I used a simple 70W fan to keep the flames low so the heat was rising up the walls of the barrel. Barrels do not last long because whilst the temperature inside the barrel only needs to be ~400C the flame temperature is over 1200C and oxidising. For speed at the cost of a bit of yield, if the wood is fairly small and very dry just light a small fire in the bottom of a barrel and once it takes add wood slowly, always maintaining a flame, this is a form of kiln. You will find once it's going the flame moves up the barrel and air cannot get back down to the newly formed char. This is in essence a modified pit method as described in Sylva. The guys in the weald would dig a trench and start a fire in the bottom, to which they would add the dry bavins or faggots, once the fire died down they covered the lot with earth and waited for it to cool. It was also the way I was taught to get hot coals for a barbecue in a barrel cut longitudinally above the half way. A certain amount of air control can be had by slightly rotating the barrel. Again the wood must be dry or you will not establish a flame without burning your char.

I think it must be one that uses tct chain to cut a slot in mortar to stuff a new damp proof course into.

Here's a picture of a hornbeam that wasn't looked after post planting, weak fork, pruning wound and the included tree tie. This will be a problem tree within 20 years.

This would be contrary to the normal laws of acquiring rights by prescriptive use

OK, if we assume the boundary is well defined as a line of no notional thickness and the piece grown over the line is in fact trespassing and nothing has been said for all those growing years what rights has the owner of the trespassing tree acquired?

My thoughts too. It looks like there is a hot tub on the veranda, they tend to get dosed with chemicals and emptied regularly. The chlorine based ones are oxidants so will oxidise iron in the soil from grey ferrous to orange ferric ions (possibly vice versa my chemistry lessons finished 50 years ago). Prevent the rpa being in the drainage path and the tree may recover as a staghead. Engineering solutions come to mind, the FC had some good results on mine tailings with biochar.

Yes I agree normally but propose a hypothetical question: said weeping willow is planted as a 5cm whip 15cm from the boundary, 40 growing years pass by and the tree reaches a diameter of 75cm centred on the original planting spot. Who owns the 17.5cm of tree that is now over the boundary, the garden from where it originated or is it assumed to have gone feral?

Google says that's Douglas fir

Wouldn't they just cut out when it is running then? Husqvarnas in the 70s and 80s had a problem with vapour locks if you got them very hot, switched them off and left them for a few minutes.

I don't think so but originally I think deal referred to any small dimensioned piece of timber. The term normally refers to white softwood, typically spruce. Scots pine from the baltic was called red deal. Pitch pine reminds me of Jeyes fluid in smell.

I agree, mine is a high pitched whistle (around 8kHz I think). It becomes more annoyingly noticeable when stressed and when anyone mentions tinnitus.