openspaceman
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Everything posted by openspaceman
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My mistake apparently it was only shell that closed theirs https://www.hydrogeninsight.com/transport/exclusive-shell-has-quietly-closed-down-all-its-hydrogen-filling-stations-in-the-uk/2-1-1335049 Still 11 isn't many compared with 57k public EV points and most EV owners charge from home.
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Last three pictures meripilus
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No you are not wrong and most hydrogen buses and cars are fuel cells but there is some hype about hydrogen engine machines, JCB and BMW. The last hydrogen fuel stations for fuel celled cars (I think James May had one??) were shut down this year.
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As a lay person, not familiar with the probable drawbacks, this appeals to me. 1)We have the infrastructure in place to move liquid fuels long distances overseas efficiently 2) There are areas on earth that are both well endowed with insolation and wind and are politically stable 3) Di-methyl ether can and is made at scale, currently using fossil energy but can be made from energy and plant carbon 4) Diesel engines running on di-methyl ether only require minor modification and do not produce particulates, they do produce NOx but in theory as a soft hybrid they can be kept out of the power range where NOx is produced, even now adblue in a simpler exhaust catalyst will turn most back to nitrogen and water. Compared with a high voltage undersea DC link from Morocco with transmission losses of 15% and worries about security...
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You would need someone to produce it before you could deliver it, most hydrogen is still made from natural gas and renewables won't be in excess to make it from for a while. First excess electricity would go into storage before they electrolyse water to get hydrogen and that is relatively inefficient. Also some pollution worries about IC engines running on hyrogen
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Yes and I like it, it is 2 speed but still slower than a tractor winch and a big point I like is that it only revs up and engages drive when you pull the tail end of the rope. It also holds the tension if required. Capstan need a different approach to rope management as the pull puts a twist in the rope which moves down the rope with the pull so is best sorted after each pull. @lux also has one.
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If you are referring to my post that was for the Husky item from L&S, the hyway piston was £28 from Greece with shipping but it may attract tax now. Of course this is all assuming the original cylinder cleans up and is not scored
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Piston Kit for HUSQVARNA 3120K, 3120XP, 3120 EPA, 3122 K, K1250,... WWW.DLASTORE.COM Piston Kit for HUSQVARNA 3120K, 3120XP, 3120 EPA, 3122 K, K1250, K1260 (60mm) Not as well regarded as meteor but cheap enough to try, OEM from L&S about £115 if they can get them
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This is normally because the blade needs retensioning, typically the blade will lose tension if it gets hot from bluntness or jamming because the set has gone, The tensioning is by stretching the metal inside the diameter of the teeth. I see someone mentioned the "ringing" of a circular saw, it carries far further than the noise of a chainsaw engine. Also, unlike a chainsaw, the circular saw is constantly driven so that energy can build up between cuts, as inertia in the blade, hence a smaller engine can cut faster.
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Pruning is exempted but felling trees other than thinning small trees requires a felling licence AFAICS. Also as the park itself is non domestic any use of red diesel for the work is interesting. I wonder if a management agreement with FC might be the way to go
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Conifer hedge standing volume to chip volume
openspaceman replied to Ty Korrigan's topic in General chat
What may be happening is that one tends to stick bigger wood through the big chipper that the small one wouldn't handle. So instead of putting cordwood aside separately it all goes through the chipper. Solid wood processed through the chipper increased in volume 2-3 fold. -
It's truly frightening how many times this is happening to me nowadays, today's was leaving the jack from the vitara on the roof of the county as I removed a leaky ram. Now I must remember to put the hilift jack in before I get a puncture (county is 40 miles away).
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GreenMech Evo205DT (fixed base tracked) and Tri Axle Stolen.
openspaceman replied to PeteB's topic in Stolen Equipment
Well at least till 2015 when I last bought a greenmech 1928 there was an immobiliser function in the control box but it was a faff to set and unset so the blokes seldom used it, I always instructed that the machine should never be parked on the trailer or within crane reach. Evenso two were stolen in my time, I found the one with the tracker fitted quite easily and it was recovered with trailer from a council estate in Wales. -
Oak felling seasoning and milling advice?
openspaceman replied to Stihl_Ben_UK's topic in Milling Forum
In the day oak fencing pales were cleft and used green, because they were quarter faces the differential shrinkage was not a problem and because they were cleft there were no knots to distort on drying. -
So sad, I loved her early stuff and seeing her long legs, and lovely face which she spoiled with a nose job. After Chicken Shack and before Fleetwood Mac one of the lads from a year above me at school was her drummer.
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Yup I have seen this very scenario when a wood burning range was fitted in a single storey kitchen of a 2 storey plus dormer centrally heated house.
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I mostly used mig for rotten bodywork and exhaust repairs so was thinking about 0.6mm wire as 0.8 seems a bit easy to blow holes, but okay if pulsed.
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Mini timber trailer fir using with 2.6t digger
openspaceman replied to Rwhiteheadfirewood's topic in General chat
I've been quite impressed by the versatility of rubber duck's, there was a channel on youtube by duckgirl but she hasn't posted anything for 3 years. I wondered if one around the 6-8 tonne mark might be handy in the woods, even pulling a trailer. -
That would depend on what else is worn but not scrap. Mk 1 or 2?
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29 is "bearing winch drum" part number 026010, a ball bearing race I think 31 is "thrust bearing (winch drum)" same part number
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I would have thought wool was a good mulch as it will release nitrogen as it slowly rots.
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Yes once the condensation gets on the outer layers the copper spalls off and it won't feed, best to take the reel off and keep it indoors, though the inner layers are often still good. I have a 200A Haverhill with a Honda 390 in somebody's shed, he is a it reluctant to return it, fine for bigger welding with the sticks and also runs a mig off the 230V side. I see they do a reasonably cheap 180A one and a spool gun accessory for £130, I might treat myself to one to replace the skip find and give it to Danny when he returns from his travels, he struggled to weld the body mounting points which had rusted through on my Vitara this week , Mot booked tomorrow, and wouldn't accept payment.
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I cannot answer for anyone else but the mig is bulkier, mustn't get wet, much heavier with a bottle and reel of wire and cannot be used outside in the wind. The stick inverter and everything needed can be carried in two hands. The stick welder also "needs" less preparation on rusty metal even though it should all be prepared the same. I still haven't tried flux core wire in the mig. I suspect I would use a mig more if I had a decent inverter model, and would love a spool gun to weld aluminium with one.
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I should probably have said combustion pressure but even that can be open to a bit of question.
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That is "cold" pressure, the pressure at combustion is considerably higher as the flame front moves through the charge before the piston has got far down its power stroke. Pinking and knocking are forms of detonation of the fuel-air in front of the flame front caused by engine heat and the pressure of the combustion before the flame front reaches there. Essentially the combustion fuel-air pressure is the true compression ratio (measured after the exhaust ports have closed) plus the pressure from the heat of combustion, if it was no more than the pressure achieved from pulling the engine over it wouldn't run at all. So risk of detonation increases with engine temperature and is one reason water cooled engines can run with higher compression ratios than air cooled. I don't know of any liquid cooled chainsaws either.
