BeePeeAitch

Thank you very much both for the detailed replies. I need to digest them to make sure I understand. I'm still trying to see the relationship between the result I'd get doing a calculation after oven drying, that's presented as %MC WWB, and the reading that a (imaginary perfect) moisture meter might give? ...assuming these figures really were my 'oven dry' results - and I know you've both said they probably aren't - then for this piece of wood, would a theoretically perfect Moisture Meter reading be 0% ? If not, why? Thank you, thank you, I realise this probably seems pointless and I really should just buy a Meter 😂

Yes, thank you both. If anyone else is interested in - or has experience with - the calculations behind the results a moisture meter might give, and can help me work out the maths, please chip in.

Thanks, yes it's on the list of things to buy one day for sure. But I'd be very interested to know how it's calculated if anyone else can help please.

Hello. I fear I'm about to get laughed out the place, but I've read quite a bit today on measuring and calculating MC (wet or dry basis) and I still have a significant mental blockage... I think it might be because it seems the phrase 'Moisture Content' can refer to several different things? maybe. An example: I have some very recently felled Willow (yea I know it isn't good to burn, but that's another discussion, this is just a 'theory' question). I cut/split a piece and weighed it at 757g Dried it around the house, oven, over the boiler for a week. It now seems to have stabilised at about 468g for a couple days. So... the internet (and this thread) tells me that the Moisture Content calc I think I need is: ((wet wood - dry wood) / (wet wood)) * 100 = ((757 - 468) / 757) * 100 = 38.2% [or alternatively] (weight of water / weight of wet wood) * 100 = (289 / 757) * 100 = 38.2% Can anyone tell me, is that saying that this particular piece was 38.2% moisture (in weight) when freshly felled? Could one also say that when this wood is 38.2% of it's original weight, there has been a 100% moisture drop relative to the humidity indoors? If so, when I'm looking to get wood to a magical "20%" figure I see floated around, is that 20% of this weight loss? So using these figures - sorry I know this is painful to watch - when the piece of wood was about 526g (dry weight + 20% of the water weight) it was fine to burn? brain... ache...

Ok thanks, I'll test it. On my saw the filter is on a curly bit of tube and goes into a opaque plastic union / adaptor thing. That adaptor passes through a grommeted hole in the tank body. The bit of tube I'm trying to replace with the Tygon goes between the plastic union and the carb, so I'm hoping there's no effect on the filter/pickup. Maybe. hopefully. maybe not! hah. We'll see. Thanks for the extra info nonetheless.

Thanks both! I'm leaving the grommet and little plastic union thing in the tank wall so that shouldn't be a problem. Found some yellow stuff as you say, 3mm ID, 5.5 OD, £2.40 delivered. Glad I asked! Thaaaanks!

Hi, first post here, not a professional, just a garden / firewood chainsaw user. New to chainsaws so please assume a decent level of stupidity on my part. Whilst investigating a fueling problem I've found two tiny splits in the fuel hose between tank and carb. This is an oooold saw, so I think it's just perished. It looks like it's about 5.5mm OD and 3mm ID hose. I see there are 'Echo' listed spare parts from the US for about £10 (and a million quid shipping), but this looks like pretty standard fuel line, it's about 100mm long, and has no special contours or bends in it. - Is this sort of hose available on the real from Garden Machinery places. - Would using a suitable sized silicon hose for R/C models be a bad idea? - Anything else on the subject that I've missed or need to know? Thanks! Ben