openspaceman
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Everything posted by openspaceman
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Certainly but in that video the wire rope and hook were propelled by the elasticity in those purple straps not energy stored in the wire.
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It may be so if bought 200litres at a time it would just over double the cost, which is insignificant on my low mileage on bikes and 49 year old car. What RON are these alkylate fuels?
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the fibre core holds some lubricant but no need with modern galvanised stuff for rust proofing
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Yes, as long as the cable wraps firmly on the drum with no kinks I don't think a bit of twist matters.
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Thanks I didn't know that. So can I have a prolific cob on a single stem?
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I'll take your word for it but unlikely to need to try it myself
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Makes sense although it's counter intuitive to use a file that way.
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I wish it were that rare, I seem to see it on every pear near me
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Do you know why?
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It was Mandy
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I see, so the electro-hydraulic only works when the head is parked? The reason high pressure filters are not used a lot is they are very limited in their size because as this increases the bursting forces increase with the square of the dimension. A return filter is under little pressure (until it blocks which is why there is often a bypass relief) so can have a large filtering area. Scuse the poor drawing When the electro-hydraulic is not parked the petrol can be started and the shuttle moves to block the electric pump output. Similarly when the petrol pump is stopped the elecric pump provides flow and blocks the output of the petrol pump. The relief valves are safeguards should both pumps become fired up
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I don't think flame speed comes into it very much, I think higher RON fuels has a slightly lower calorific value, it's just that the lower compression engine burns at much the same temperature but the power stroke expands from a lower initial pressure, so you get less work out of the heat put in. Conversely if you put a lower RON fuel in an engine that is designed for higher RON then as the piston compresses the fuel:air mix it may become hot enough for the fuel to ignite before the spark or, more likely, as the spark starts the combustion, the pressure and temperature from the expanding flame front detonates unburned fuel.
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Yes @Johnsondsays the the pressure relief valve is on the (spool) block then neither pump is protected if the manually operated valves are make before break. A pressure relief valve between each pump output and tank would solve this but then you may as well put a shuttle valve where the manual valve is and let it do it automatically. The hydraulic high pressure filter is a bit unusual for this sort of use. Normally on simple 12V pumps built into the reservoir ( as on a tipper) a switch on the spool powers up the electric pump, if so this would need disabling while the petrol pump runs to cut wear on the 12V pump constantly blowing off the relief valve .
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World's biggest wood yard?
openspaceman replied to Ontario Firewood Resource's topic in Firewood forum
It keeps out the stain fungus too and strangely makes the milling better. -
600kg of winch on the back and about half a tonne of bomford blade on the front with wheels set out to 8ft helps keep it stable.
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World's biggest wood yard?
openspaceman replied to Ontario Firewood Resource's topic in Firewood forum
Pine logs will deteriorate within one year if left lying but spray water storage meant they were still millable 4 years later after a major windblow. -
World's biggest wood yard?
openspaceman replied to Ontario Firewood Resource's topic in Firewood forum
https://www.forestresearch.gov.uk/documents/6583/FCBU117.pdf -
'cept my 1124 has a 4.5tonne-meter grapple loader and twind 4 tonne winches Makes sense to me
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World's biggest wood yard?
openspaceman replied to Ontario Firewood Resource's topic in Firewood forum
To preserve the wood, traditionally they would have dumped them in a lake but when that's not possible they get sprayed. -
No one has come running to buy any of my Counties and that 1474 that sold only had a few hours on the clock. Mine are a bit battered from forestry use. Rob Morgan, who breaks Counties for spares reckoned a private buyer might pay £10k whereas a professional restorer would only offer £4k. Mind I'm winching with the 1124 today and forwarding with an 1164 and grapple loader.
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Are you sure the cylinder is unserviceable. The aluminium pick up from the piston always looks bad but after that is dissolved off the scratches in the nikasil are often not severe. Most of the wear is taken by the piston ring.
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local wildlife (fur,feathers and beasties)
openspaceman replied to Adam Bourne's topic in Picture Forum
Yup, once the wildlife trusts changed their logos from dragonflies to badgers it was the death-knell for hedgehogs, people deliberately running them over doesn't help either. -
Yes I suspect crank seal and probably clutch side crankcase bearing wear
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Air quality improvement from plants
openspaceman replied to kevinjohnsonmbe's topic in Tree health care
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I see some people are deliberately adding 10% coloured water to the E10 and then syphoning off the 81.8% good fuel off the top, so the fact that it absorbs water which sits at the bottom of the tank until it's agitated only becomes a problem if it corrodes something or a globule fouls up the carb. Only the fuel tanks breathe, the storage container shouldn't so water shouldn't get in until the machine is fuelled and left with it in unused.
