Logjam
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Everything posted by Logjam
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Simple answer - AFAIA there isn't one.
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Ditto Since problems with rising oil levels part of the manufacturer 'solution' was to provide modified dipsticks. There is now a X (not visible in the photo) at the two indentations, this identifies the highest level, at which point oil should be changed. Wouldn't recommend running it for too long after part draining as oil will become progressively more diluted. I get oil change kit delivered for £50, correct spec with filter & drain plug. Easy job to change & significant saving over dealer rates. Ours required three oil changes in the last 12 months.
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Revision guide on the NPTC website, not many pictures but front cover has a pole rescue set up.
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For those that at are speculating on the climbers footwear, he's wearing Jika-Tabi. Traditionally worn by tradespeople, gardeners & foresters, even available with steel toe cap to try & satisfy modern safety requirements. Provide 'bare foot' feel when climbing around on the branches but not sure there's much benefit with spikes. Spikes are more like two claws worn on the outside of the foot bit different to what most of us are familiar with but seem very effective. Often used to access the crown then taken off & hung on the back of the waist belt / harness until needed again.
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Just noticed you have stated manufacturer's recommended lifespan as 6-8 years. In which case providing you can produce relevant documentation & harness remains in serviceable condition there should be no reason why the harness should fail until the upper figure is reached.
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Depends on manufacturer's recommendation, some give 10 years for harnesses others 5 & some 7. Get on the web & download relevant info for your harness etc.
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Paperwork for pulleysaver says 2 years for the Dyneema prusik loop, rope & Sirius hitch may be up to 5 years if infrequent use (1 week per year). All parts are subject to inspection, replace when worn / damaged, hitch cords should be considered consumable parts.
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From Treemotion manual: Life Span Infrequent use (1 week per year) up to 5 years. Under intensive use reduced to 3 months, normal use 1 year. Treemotion Life Span.pdf
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Petzl have the answer on their website Can I use the ASCENTREE rope clamp on a single rope? Just in case link doesn't work: "There is no specific reason to prohibit the use of the ASCENTREE rope clamp on a single rope, but that is not its primary intended usage. Moreover, the ASCENTREE rope clamp is not certified for such use."
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[emoji106] Dove Tree - Davidia involucrata
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From AFAG401 Climbing ropes Select ropes to provide a high margin of safety. Ropes suitable for tree climbing need to have a minimum diameter of 10mm and are not normally larger than 14mm. When selecting a rope, carefully consider the compatibility of any friction hitches or mechanical devices used.
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How are people finding their new Isuzu D-Max?
Logjam replied to Andrew Barrett's topic in Arb-Trucks
If yours is only 5 months old hopefully it should have all the mods. Earlier models have had a couple of software updates to try & resolve dpf regen issues. Common fault with over enthusiastic blocked fuel filter warning light, there have been two filter re-designs to fix but not sure they've got it right yet. Ours still lights up occasionally (2012 model). Oil dipstick re-designed, not sure why, maybe so you don't notice the oil level rising 😕 -
How are people finding their new Isuzu D-Max?
Logjam replied to Andrew Barrett's topic in Arb-Trucks
The 4x4 on the new models is not supposed to need a limited slip diff. Explained in this Isuzu D-Max 4x4 Drive Train System Demo: -
Not just arb; recommended for all chainsaw operators Chainsaws at Work Indg317 (top of page 6 in pdf)
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Nicholsons should be able to sort you out, have their own nursery as well.
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Help! What to do with seedling?
Logjam replied to spandit's question in Homeowners Tree Advice Forum
Don't think it's hardy outdoors in UK. See RBG Kew -
PS - why the unclipped harness buckle?
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I'd say not uncommon branch buttressing for the species, possibly exaggerated by the dead areas. Die back along top of branches not that unusual on pollards, somebody with more knowledge than me might be able to provide an explanation. Guess it might be due to sap wood drying out after cutting. Wouldn't recommend removing the branches as not included in TPO consent. Can only do minimum works to make safe if considered an imminent hazard - re-pollarding will presumably remove any immediate risk of failure, can then decide on future management.
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Try these: Husqvarana channel on YouTube Husqvarna website & have a look for the chainsaw tutorials as Arran said NPTC website has qualification & worksheet downloads Drivelink blogspot (by Dave Vickers - Arbtalk member)
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Chain Sharpening.. Acceptable discrepancy between teeth.
Logjam replied to champagnecharly's topic in Chainsaws
CTS - from the Husqvarna sharpening link in your post "It is important that all the cutting teeth are of equal length". -
Chain Sharpening.. Acceptable discrepancy between teeth.
Logjam replied to champagnecharly's topic in Chainsaws
Assessment requirement is for the chain to be sharpened to manufacturer recommendations - this will state cutters of equal, identical, or same length depending on where you look. Any variance from this is down to individual assessor/ trainer discretion. Could depend on the chain pitch & wear, 1mm difference on a new chain might be an error of around 10% but on a well worn chain could be more than 20% (both excessive IMO). This doesn't just affect kick back but vibration & cutting performance. CC - don't think you're OTT, 0-0.5mm variance sounds a lot better than 1-1.5mm. -
which mallion do I need for weaver harness bridge please?
Logjam replied to jrose's topic in Climbers talk
Not sure a maillon will do the job. The original attachment ring is designed to keep the webbing strap flat. Maillon will probably distort & crease the webbing no matter which shape as there won't be anything to keep it in correct alignment. -
Anchor hitch is good & secure but needs enough space on krab to accommodate wraps.
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Also says its a reliable knot so what to believe. Included in The Tree Climber's Companion, Jeff Jepson & Tree Climbers Knotbook, Dirk Lingens as suitable anchor hitch for climbing. Jepson advises against using it for rigging as it can jam tight & be difficult to untie. Lingens cautions that it is easy to make a mistake with this knot so ensure you can tie it correctly & consistently & always test load. I've been using it for years with no problems, works well with hitchclimber as its very compact & the end of the rope exits at right angles to the working rope which helps to avoid it catching the hitch. With a fishermans the tail exits back up the rope & more likely to interfere with the hitch.
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Yes hitch will work but need to be careful not to defeat the point of having a wire flipline. I know of climbers that have had bad accidents after cutting through the hitch (no pulley). Rope grab with shortest possible soft link is a safer option. If using a hitch keep it short, depending how its tied VT can be too long.
