openspaceman

One of the things w saw with scots pine stobs and posts is that the sapwood absorbed water borne preservative well but the heartwood did not, such that over many years the middle of the posts rotted out but the outer layers (which actually got an overdose of preservative because of the way the chemical was measured in and out of the treatment cylinder) did not rot.

@naturarbo

No it wasn't on rail, Spring 2010 NR suddenly pulled all the funding and there was a few weeks scrabbling around until the started awarding work again.

Yes but the difference is gnat's piss in the scheme of things. I think a 4 stroke small liquid cooled engine running a DC charger at constant optimum power into a battery would be more efficient than running a flywheel and its fan at constant speed but it would need a rethink of how it chipped and probably load. I expect all the chipper firms will be investigating, hey @PeteB? I see, advertised here, that Timberwolf have a hybrid with a small engine (beneath the size needing pollution controls??) that stores power produced at high idle, between chipping, into super capacitors which then feed an electric motor to increase power on demand. What they don't mention is the energy capacity of the system and how long the assistance is available before recharging.

Yes just about but you musn't discharge below 10%, 15% to be sure, so knock 10 minutes off.

But did you get it? The powerstation I used was a Bluetti lithium ion battery and inverter https://www.t3.com/reviews/bluetti-ac500-b300s-review So no engine involved. Mind I don't recommend it as two failed within the first year, at least they refunded the total cost without deductions for use.

I fabricated a tractor exhaust last year, on site, with a 200A inverter welder using a 3kWh 3kVA power station so I don't see why that wouldn't run a 2kW corded chainsaw for ringing up, mind you would need a wheelbarrow to carry it (and £3k)

I was thinking that it would have to go through the legal department and the chief executive and that even an unopposed TPO would run into thousands

How much does it cost to TPO a tree?

Ash

Knots and inclusions will militate against selling it for sawlogs or bars plus you will need at least an 8 wheeler load of 17 tonnes for local delivery or 29 tonnes for an artic flat bed.

So there is no continuity between spark plug lead and ground on the coil? I suspect the 285cd was just a slightly larger engine than the 280cd and the coil may be common to other saws and stone cutters of the era, @adw will know and would have worked on them nearly 50 years ago when they were new but he may not read this message till after the bank holiday

If you were a commercial feller the cut would have been at ground level and the butt a bit longer.

Nice short butt, saw just a tiny bit short too.

testicular cancer, the first recognise industrial disease. I think the same PAH as was linked to lung cancer from cigarettes.