Jump to content

Log in or register to remove this advert

openspaceman

Veteran Member
  • Posts

    9,928
  • Joined

  • Last visited

  • Days Won

    5

Everything posted by openspaceman

  1. Similar to me and I just have, subject to the new bank where I have a personal account allowing me to open a business account and transfer all the money and direct debits. If all goes according to plan I will have free business banking for 30 months which should see out any business transactions from my much reduced working. I was just going to blag it with my personal account except I was surprised to find it is not possible to transfer from a business account so I must gradually transfer any direct debits (credit card transfers, subscriptions etc.) to my personal account over the next couple of years and then close the new business account before fees crack in.
  2. No from what I said above I don't think it wise to burn in a stove because of the effect on the stove but see no problem in burning it on a camp fire at the sea side.
  3. Direct evidence of what?
  4. I have seen websites saying to avoid this as the chlorine from the sea salt can react with the long chain carbohydrates in the wood and form dioxins. I don't believe this as I don't think the temperatures are high enough to split the salt molecule for the chloride ion then to find two partially oxidise benzene rings to recombine with. I can see a route to produce dioxins from inadequate combustion of a chlorinated benzene ring, like PVC or neoprene. I'd like to hear your reason for this? I'd think it unwise to leave the ash from burning driftwood in contact with any metal as the salt will be hygroscopic and salt and moisture acts as catalyst in the oxidation of iron.
  5. If you go to https://osmaps.ordnancesurvey.co.uk/53.32697,-1.98893,18 You can swap between the map and aerial photo and see there is a drain to the overflow from the middle of the dam and the feeder outlet to the canal (the reservoir's main function where one would expect most of the water to leave the dam) the feature between the spill way and this drain is indeterminate. Also note in the aerial photo the water level is above the boat slipway and water is flowing over the weir to the overflow, no other photos I have seen show the reservoir this full but there is no date on the imagery. I just wonder if historically, prior to 1945, there was no spillway and the reservoir was filled more conservatively. Then recently with the demand for leisure boating the decision was made to increase the static level for dry periods and the spillway was added to allow for this. The wikipedia article is interesting and points to the feeder running in by the transhipment building also, I wish I had read this before I tried to deduce it from the maps. Interestingly the first flush of run off from the Toddbrook does not enter the reservoir until the stream is running several inches higher.
  6. I only noticed it then. Incidentally googlearth shows it empty in 1945 (and no sign of water in the canal but it is B&W so hard to tell)and no spillway visible, all the later photos show it at well below capacity with most of the boat slipway showing. Yes they back pump for the Caen Hill flight because there is no water at the top of the flight to make up and I think they had to do this from the beginning with steam pumps. Even with limited pumping the one by me tends to be shut for navigation from June till the Autumn, it was only re opened in 1991 after being closed for 50 years.
  7. I think you mean spillway? The reason is there was ambiguity early on with the word slipway. It was used to refer to a point at the North of the reservoir where there seems to be a boating club and its slipway (I marked it on my sketch as "SLIP"). At this point there is also a weir where water leaves the reservoir and falls into the normal outflow, it seems to fall into the part of the Toddbrook that has skirted the northern edge of the reservoir and then enters the curved outflow channel that runs in front of the dam and on into the Goyt. There are weirs also at the upstream entry to the Toddbook reservoir and halfway to the dam on the northern edge which allow water to divert into this part of the diverted Toddbrook and go directly to the outflow, although trying to interpret the map is not easy.
  8. Here's a quick sketch of my take on this from looking at the map. The Combs and Toddbrook reservoirs (dark green) feeders (yellow) fill the High Peak Canal (canals use a lot of water when boats go through the locks, about 30 tonnes in our local canal as the locks hold two 70ft narrow boats). Because the canals follow the contour and the Goyt is lower than the canal after Whalley bridge it has to be filled from Toddbrook and Combs reservoirs. Eggs has said it is also filled via the Macclesfield canal and the Bosley reservoir which is 25km from the junction with the high peak canal which starts in Whalley bridge about 9km south of the junction. The Fernlee and Errwood reservoirs do not seem to feed the canal but presumably also have the function of controlling flow on the Goyt. The trouble is the maps only show open water so I do not know what any of the reservoirs also serve by underground pipes. So the only ways out of the Toddbrook reservoir are via the feeder to the High Peak canal, the weir at the northern tip and then the overflow that runs curving clockwise in front of the dam and thence into the Goyt and the spillway over the top of the dam which meets the above overflow. Any excess that ends up in the High peak canal ( shown red) flows over a weir and into the Goyt (shown light green) near the start of the canal at Whalley bridge. As the Toddbrook reservoir was full, and following very heavy rain, all the excess ended up in the Goyt, which seems to have coped with it, as I said in an earlier post there was the possibility of holding back water at the Fernlee and Errwood reservoirs plus the Combs reservoir if the Goyt could not handle the excess from the Toddbrook system. So it looks like everything worked as planned except the spillway was damaged when it was over-topped with an unprecedented flow. I can see the spillway was poorly constructed or maintained for the flow that came over it, Eggs asserts this was predictable and attempt should have been made earlier to lower the level of the Toddbrook reservoir via the overflow into the Goyt if I infer his post correctly. My personal guess is that there wasn't much of a void below the spillway slabs prior to it being over-topped and the damage was all done during the surge because the joints between the slabs had deteriorated.
  9. Okay so the Todbrook after it leaves the dam is largely enclosed as it follows the route I suggested, the slipway and spillway take excess to the Goyt.
  10. Yup, even I, a late entrant into the forestry industry, had 17 years under my belt before I was assessed for the old units. Given mechanisation and the gravy train that is NPTC pyramid selling I wouldn't be looking to doing other than management jobs now if at all in forestry unless the employer footed the bill with no loss of wage. Similar to motor bike riding, if I had to progress through A1 and A2 to ride my bike I wouldn't have bothered.
  11. Looking at the map I think it is fed directly from the middle of the dam by a cut running NE alongside reservoir road then under canal street to the terminus of transhipment warehouse. This means the only viable way to discharge was into the todbrook under the dam and into the Goyt. Even if the canal system could take it this the cut and pipe wouldn't have capacity to take much and excess falls into the Goyt at the terminus weir anyway. So the only way to get rid of the excess and not flood the Goyt would be to hold back outflow from the two other reservoirs to the South at Fernlee. Apart from this gazing at the map my only direct experience is climbing and walking some ten miles to the west
  12. Yes but did the dam not have a spillway before or was there an earlier spillway than the 1968 one? Also while I'm asking; is there another outlet and to which canal or does it feed the canal system via the river Goyt? I ask because the High peak canal is higher than the Goyt at Whalley station and it looks like there is a feed to it via a mixture of cut and pipe from the reservoir.
  13. and while we are on that subject; what was there before this spillway was made?
  14. Is this because most are machined from a bar and hence don't have sufficient hardness. In the old Days balls rated for 3500kg were stamped with a D and I think this related to hardness as well as strength. Anyway why not use a standard ball hitch with twin bolt mounting onto a block of steel which fits snugly without movement into the tractor clevis, secured by the standard pin?
  15. It looks like a leaf miner beastie of some sort. A little bug that lives between the top surface and under surface of the leaf and eats the in between bits.
  16. Sounds like a project; two wheel motors on the back from a Tesla, small battery pack of about 2kWh usable, swap out the alternator with a 150V 5kW one. 100A buck converter for the 12V system with a small lead acid battery. Raspberry pi controller and then you have a hybrid with 4wd capability for a couple of miles or electric only for town. Hybrid battery charged on the overrun or under braking also gives the extra horsepower for hill climbing. Towing remains the same.
  17. ¿Que?
  18. This is very much my view, not only of charities running previously publicly owned facilities. We have a local example where small charity with no employees came into a lot of money which has provided a sinecure for one of their number for the last 8 years for no public gain. It's like running a family business with none of the risks, no shareholder's to answer to and set your own wages.
  19. Why not just register as self employed (as additional work from your employment) get a Unique Taxpayer Reference (UTR) and crack on? Only drawback will be filing a self assessment eact year.
  20. Civil Contingencies Act 2004, but I don't know who has authority to call it and doubt very much it has been used in this case. IMO a lot of the more recent acts are poor when compared with those from previous ages and this and the highways act come into that category, not to mention dangerous dogs act and Hunting act
  21. I've had this with both saws and the vitara in the past, not the fault of the petrol station either. With the vitara it was a broken fuel cap that allowed rain to drip onto the one way vent in the cap, as the vacuum formed a droplet of water was sucked in. When the engine stopped I filtered out a litre of water from the fuel after the nice AA man said I had a broken carburettor and towed me home (it's single point fuel injected). The chainsaw exhibited similar problems to what is happening to the current MS 181C, the engine fluffed when the throttle was opened. in that case it was a husky and I popped the welch plug under the main jet off and could see a small globule of water in the well under the jet. I shall flush the carb through with alcohol to sort this with the stihl but I think the fact that air is being sucked into the primer bulb indicates another problem with sealing. First step with this will be to replace the tank filter. I cannot see a cheap replacement carb cheaper than £80 otherwise to save time I would just do a swap.
  22. You have it. If you look at the early pictures you can see vegetation growing through the joints in the slabs, once water gets through these and scours out a tiny bit of soil under the slabs the static water give the slab a bit of buoyancy, then when the velocity of water flowing over the slab increase the Bernoulli effect (same as sucks petrol from a carb's venturi) can actually suck the slab up a bit. I imagine at this time of year they like to keep the reservoir full, in order to service all the extra lock movements generated by boating holiday makers, as this would normally be a dry period. Exceptional rain and limited means to discharge it and a full reservoir meant the dam was over topped at the spillway as it was supposed to but the construction of the spillway plus failure of the waterproofing led to this loss of soil. The soil is what protects the clay core, which is what makes the dam watertight plus the shear weight of soil is what resists the hydrostatic force of the water, this is why it's serious, the potential loss of more mass of soil by scouring if the dam is over topped again. It is probably just another phenomenon of a more energetic weather system. Much of the above from discussion with the owner of a narrow boat I occasionally crew who has an old style engineering degree.
  23. This sounds similar to Elsen Karstad's operation near Nairobi. He initially charred sawdust and compressed it into briquettes with a clay binder but then found charcoal vendor's waste was readily available and could be extruded into briquettses I have not used an Exeter, the only mobile device other than a traditional ring kiln was the Viper, which was a kiln rather than a retort and not the best of charcoal makers. It's one attribute was the char was cooked to a higher temperature than most retorts do. For use in a stove like an improved Jiko you want a char cooked at a higher temperature as this has few volatiles left to produce smoke or flame. @Woodworks has produced a design for a small retort system that produces charcoal from small chunks of wood which does about 20kg per burn in a cycle time of about an hour. A D Karve and his daughter Priya have done some work in India making char from sugar cane leaves using a simple retort on the style of that used in Russia by Yury Yudkevitch and Alex Belonio in Vietnam has developed a number of cooking devices that burn rice hulls in a gasifier. For larger scale look to the people making biochar from agriwastes in simple flame cap devices, which are a modern adaptation of methods used to make small charcoal pieces in England in the eighteenth century.
  24. @Darkslider cured his problem by having a dealer replace the gaskets, needle valves and diaphragm with a new car kit. The 181 is quite different from the 181C which I am having trouble with in that it has no primer bulb whereas the 181c has one remote from the carb. AIUI they eat a lot of smoked meat and historically provide a warm dark home for various worms, the shallow bowl allows inspection for the offspring before they get flushed away to infect the next generation of grazing animals. Last experience I had of the shallow bowls was thirty years ago, it could be disconcerting first time if the gooly bits dangled low
  25. Consider a small air conditioning unit that can double as a heat pump, for small temperature differences , say 5C out and 20C in they get more out of your unit of electricity.

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.