openspaceman

Yes but there is a way around it by using it that 95% of the time at full speed and then dropping the speed but increasing the pressure to 10 tonne by adding an intensifier.

Don't you mean larger?

The bark present at the time of damage is still there, so it doesn't look like mechanical damage, from the regrowth either side of the sunken area it looks like the undamaged part has put on most of a growth ring and is trying to occlude the damage. which happened at least one growing season back. It is too localised low down to be sun scorching so given the slight blackening I'd guess a car exhaust has done the heat damage.

Pug 3008 hybrid4 does that and there is due a citroen aircross hybrid4 and maybe a vauxhall equivalent plus it's the same layout as a one of the vans, possibly a berlingo but no 4wd version van. The cars are supposed to be plug in and run for about 20 miles on battery. I through I would need to tow a chap out of a wet field in an older C5 hybrid but he drove out and it was quite strange to see the rear wheels spinning faster than the front. I mentioned this to @Big J a while back in a thread as he has one of the citroen vans using the same base

I'm not sure why we don't produce more beans and pulses apart from harvesting them immature for freezing. Of course we dump a vast amount of nitrogenous liquid into the rivers and sea each day.

Yes and given that most of the world's population can never reach our standard of living I don't have much hope for COP26 either. Trouble is the problems are coming home to roost a bit earlier than I expected. This current energy crisis is a case in point, We need nitrogen for crops, it's equivalent to having more acres, traditionally it came from hydropower and more recently made from natural gas, often from stranded resources which would have been flared. Now it's worth liquefying and shipping it so no need to make ammonium nitrate with it. Then given a stranglehold on the west's supply of gas from the east...

I'm all for sustainable farming but the regulations around farming are bewildering, I left working dairy farming 45 years ago and wonder if I would have been able to keep up. The old farm is now a golf course and an academy. Given all the conservationist eulogising rewilding and loss of all Knepp's arable acres I do wonder how we are going to compete for food on the world market as we fall back to the interwar 50% dependence on food imports. I think we produce 60% currently and even during the war only got to 70% plus the population has doubled since.

I thought shrews were insectivorous so never saw them as a problem, it is bank voles (our commonest rodent I think) that will strip a young plant and they also love the shelter provided by a plastic tube.

The roof space in a well insulated roof should be near ambient air but yes whole house ventilation units are often in the loft but vent directly to the outside because of condensation risk.

Funny thing is I have never seen lodgepole pine grow into nice poles here, completely unlike in america apparently (never seen it there). Most woods if peeled early and dried quickly will be to some extent durable, sitka dries hard and lasts if kept dry but sweet chestnut and yew would be my choice. With sweet chestnut some care needed with fixings as it splits readily.

fair comment

Careful mate you'll be getting as paranoid as I 🙂

Yes it was the problem of some knowledge of engines leading to an assumption about stoves and that I thought we had discussed this before, not more than that.

It can be @Stubby but not for the reason you thought. All modern domestic gas boilers are room sealed.

There may be good reasons for going room sealed, one of them may be that the house is designed to be nearly airtight with very low infiltration rates with a whole house ventilation system managing the air changes. This could affect the operation of a stove when the pressure in the house changes. After all we are only talking about fractions of an inch water gauge between the stove and the top of the chimney, this is what drives the air through a natural draught (i.e. no fans) stove. As I tried to point out earlier in the thread the actual air flow through a small stove is likely to be a small part of the air changes needed in a house for a healthy atmosphere. Typically a stove will take ambient air from a room at about 20C raise it to about 800C to ensure a clean burn and exhausting it up the flue at about 200C, the idea being that it leaves the top of the chimney at above 100C to avoid condensation in the chimney. Heat losses due to dumping 20m3/hour of air with a delta C of 80 to 180 is in the order of 1kW and is not significantly different for room sealed or normal stoves. A gas boiler has much lower losses. @Retired Climber gets my point that increased air density leading to increased massflow is a consideration for a heat engine but not for a simple stove.

Doh, so you have to heat it up in the fire before dumping it out of the top of the chimney with greater heat loss than if you took air from the room that was to be made up from outside air anyway.

No but it would give more leeway to dry stuff in the summer and extra dry storage in the winter but if it's not in DNP remit to aid local businesses...

I suppose the change in the law won't cut much ice with your planners over erecting a polytunnel?

That's two of us then, it's a strange thing though that the whole of the insurance industry stems from it, my pension provider gambles that I won't survive five more years.

I wonder how the efficiency compares, my guess is you lose 30% of your effort straight away in the pumping losses.

There is a little hope in the fact ash were generally self seeded into hedges and woodlands, hence there could be a pool of resistant genes. I noticed an apparently unaffected mature tree in an otherwise devastated woodland, the owners have reported it on Report a Tree - Living Ash Project LIVINGASHPROJECT.ORG.UK Welcome to the Report A Tree Page Together, we can combat ash dieback through harnessing the natural genetic diversity... I advocated removal of all badly affected tree but apparently FC and NE do not agree. My thought was any promising progeny of these resistant trees would be overcome by the sheer amount of spores blowing about even if they could become resistant over time with a mature canopy.

That wouldn't surprise me and may be the reason soot has fallen and built up on the register plate, Probably , MEWP would be cheapest . I don't have a cowl but do think they are advisable because with a stove there is negligible airflow when the stove is off to dry out rain and a mixture of rainwater and sooty deposits is acidic and that percolating through cement is not good, my flue is cement cast in situ. I would love to have easy access to my chimney as not only would I sweep from there downward but I would also go to some effort to make a DIY electrostatic particulate filter to sit at the chimney top.

Ah I see, so the liner doesn't extend all the way through the register plate to the cowl or top?

Yeh, difficult one in this day and age but I would take out any baffles in the way and pass the rods and rotary brush up through the stove until they come out the top, if there are no obstructions the chances are an old single skinned sectional flue pipe is still okay. I imagine setting a proper register plate and fitting a 904 liner (8"/200mm??) will cost a couple of grand plus fitting a cowl. The thing is it's well out of time limitations for building regulations but no registered sweep is likely to risk passing it off, even with a pressure check.

I'm glad you took the plunge and hope things go well. I'd never heard of them till @agg221 mentioned them.