openspaceman

How much spare heat do you have, after all you'll need to keep the digester warm? You have two very different types of material to dry, the limit on the rate of drying of the sawdust like stuff will be how much heat you can deliver to it, because its rate of receiving heat at its surface will be less than its rate of internal conduction, so it can deliver the heat into water in the middle of the particle before the surface gets too hot. Logs are different, as the outside gets drier it cannot conduct heat into the interior to volatilise water deep inside, so you have to deliver lower temperature heat to the surface over a much longer period. Logs will air dry, sawdust probably won't to any sensible depth. Logs present little resistance to air flow, air won't easily flow through sawdust. Even with a deep bed chip dryer using 40C waste heat the electricity costs for running the fans was significant. It cost us about 1 kWh of heat to extract 1 kg of water from logs in our dryer, we reckoned we could half that at the cost of much more expensive equipment. If one could maintain a clean burn by direct combustion of wood chip the losses in the flue stack even at 50%mc wwb are much less than a dryer in the absence of heat recovery. Given some of the above and if you are going to use the biogas produced in a spark ignition engine then a co current dryer for the sawdust like stuff using the hot (500C+) exhaust may be worth looking at, a rotary valve metering the envirobed into the exhaust and collecting the resulting material in a cyclone. The feedback loop being maintaining the cyclone at ~110C by varying the feed rate of the rotary valve. This would be more problematic with a diesel exhaust as there would be more chance of combustion.

This is just why I changed from Husqvarna oil to Stihl back in the 80s, it bright light I couldn't see the blue dye to be sure the petrol had been dosed with oil. I have migrated to the green Stihl oil now but would love a means of dipping it and seeing the petrol:oil ratio as I think the blokes can be a bit blasé about measuring the oil into the fuel. I see some suspicious cylinder damage but the fuel is always right by the time the saw gets back to me.

I'll second that. Only Jason left that I've spoken to now

This is my experience too plus the odd log not sorted from the chip.

What having a malformed inadequate sink? Generally the fell cut below the sink makes for a stiffer hinge as the fibres on the front face remain supported and will break in tension earlier.

My meindl woodwalkers are a bit heavy but fine for walking, been up Snowdon , Skiddaw, Helvellyn and a few others.

I have a bulk bag about 50kg of miscellaneous hydraulic hoses, many with reusable fittings if anyone wants some to play with a splitter project. These are all bits and pieces used over 35 years woodland contracting. PM if interested in collecting from NW Surrey

Different softwoods absorb preservatives differently. Seasoned pines take up well, Douglas and spruce badly unless a sap displacement method is used, the problem with spruce is the pits in the end of the cell walls block as it dries. Wood is a collection of cells which have an inside and outside wall, just dipping it in a preservative tends to coat just the outside of the outside cell walls. Green wood has the cells full of incompressible liquid so either you immerse it in a preservative that can diffuse through the wood or you need to get the liquid out of the cells and replace it with a compressible fluid (gas or vapour) then you can use a variety of means of forcing the preservative in to coat both the inside and outside of the cells to the required depth. Get too good at this and you end up with the wood retaining too much expensive preservative which is why you have pressure to vacuum systems to leave just the desired load of chemical in the wood. Any chemical preservative is likely to have adverse effects on living tissue, hence why chromated copper arsenate is severely restricted and creosote slightly difficult to obtain.

Not if the bores or rings are worn but it may have glazed bores from running with no load for long periods. There are several techniques for glaze busting but running at high load can do it. Also consider the turbo leaking oil and the valve guides.

'Scuse the derail but have you propagated bay and how's the best way? I've fancied a bay hedge for years and now have somewhere to try one.

He died young from an asthma attack but I was trying to make a point: I think most people are basically hedonistic and don't consider the consequences of their lifestyle beyond the next party let alone the next generation but mine is the first generation that has been able to modify our living environment so extensively in my lifetime. The consequences are unlikely to dramatically affect the last years of my life but I have children and grandchildren...

It's good that you are considering the consequences and yes remove them if you also find litter in the countryside aesthetically displeasing. The pollution issue is a different ball game in which washing clothes is a big contributor to plastic micro particles now found in filter feeders, like crustaceans, and many other organisms. Whether your contribution will be significant,: I'd put it alongside voting labour in Surrey. Back in '74 I was doing the first pruning of poplar and removing tree guards on piecework 2p/tree, I gathered all my guards and brought them home, the other two guys just left theirs where they fell, the boss said no one would see the difference in a few years, he sure as hell didn't as he was dead before he was 50.

I resemble that remark, don't recognise the avatar though

3 metres for on or near the line, 1.2m on platforms, in practice you need PTS as a minimum for any lineside work.

I'm impressed, did the battery stay in whilst submerged?

Not any more but could make one with banding steel. I always preferred a length of 3.5 mm high tensile fencing wire

Irfanview

...but PeteB still got some more product placement in!

I'm still considering a hedge of bay here in sunny Surrey, certainly grows fast enough.

Those A frames are only allowed for recovery of a broken down (but otherwise legal) vehicle or a gross weight of less than 750kg unless the brakes of the towed vehicle are operated by the service brake of the towing vehicle ( I see no overrun braking arrangement). In practice many people do it without meeting the braking requirement but I wouldn't as I dislike towing at the best of times.

I see why your monica is Flatyre

That's right, in fact the story goes that Daimler (or was it Benz) first heard about petrol as a fuel to replace town gas in his engines from reading about a lady who was removing stains from her husband's clothes with it in a room with an open fire when the lot went up. The danger to my mind is if there is a delay between pouring the petrol and sparking it off. worse case is pouring it on a smouldering fire, blevie ensues.

This was my point, high detergent oils keep modern engines clean inside but old engine used to be dirtier. So it was considered unwise to start using a high detergent oil on an engine that had spent it's life on straight oil. Not something I ever experienced but what I was told.

I thought this was a safety mechanism on the R version, the brazing shears to protect the rest of the drive train ?? I didn't realise the T version was different as we only do rough stuff and get through a number of drums on the 30" hs81R

On your scale with stacks 4 metre high (IIRC??) I doubt rain penetrates very far before it runs off and drips from the ends. On the small scale and and especially with softwood logs I think rain penetration is more significant than people think. Part of my sheeting blew off my store at home and the logs seem much wetter than those where it remained covered. Yes in your case that low moisture content is easy to burn clean so a more sophisticated boiler isn't warranted. The Kobs would burn 40% mc and that was just as well as I never tested the allegedly G30W30 chip and found mc in spec. I think a case can be made for drying high moisture content chip on the fly but probably with screening in order to upgrade it from a power station product to a G30W30 premium for a smaller boiler.