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1Instructables1,248Views12CommentsNOwendoc, NSW, AustraliaJoined June 2nd, 2009
engineer doing treechange

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  • galah commented on Alex in NZ's instructable Fence Stake Driver2 months ago
    Fence Stake Driver

    I thought Kiwi fence posts were treated pine? On this side of the ditch a dolly is used to drive a star picket. Take a length of steel pipe with suitable inner diameter to go over the steel picket easily. Say a metre long. Weld a round plate into the top end. Weld it strongly. Probably put parallel handles in smaller, smooth pipe on either side. LIft and bang the dolly until the picket is driven the desired distance. Wear hearing protection. Great exercise for the shoulders. Safer for everyone around than hammers.Don't think you can buy your dinner in 100mm steel pipe however.

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  • galah commented on aespie-whitburn's instructable Celtic Knot Walking Stick4 months ago
    Celtic Knot Walking Stick

    As I understand it, Tasmanian oak isn't oak. Its just some nice hardwood from Tassie. The rest is marketing. Or perhaps from nearby Victoria. It will be some eucalyptus, ie gum tree, perhaps stringybark. Still a nice wood.

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  • galah's instructable Automating a Farm Gate, No Dig's weekly stats: 11 months ago
    • Automating a Farm Gate, No Dig
      628 views
      11 favorites
      0 comments
  • galah commented on The Sam D's instructable Automatic Lights for Tool Chest1 year ago
    Automatic Lights for Tool Chest

    HiJust correcting your battery pack calculation. As the batteries are in series, you get more volt, but the same number of AH as a single battery.

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  • Demonstrating the CO2 Weight of a Gallon of Gasoline

    seems like there are a lot of apparently misinformed comments here, Why are there 26 pounds of stuff when you burn a gallon of petrol? Because thats what happens. The 'C' turns into CO2, the H turns into H2O. H20 isn't significant in the troposphere. Whats the point arguing its abundant somehere down low? CO2 concentrations were higher in the past? yes, millions of years ago. How is that relevant? Try taking look at real current temperature and rainfall data, and then see if you can support the pretence that nothing is going on. because thats

    seems like there are a lot of apparently misinformed comments here, Why are there 26 pounds of stuff when you burn a gallon of petrol? Because thats what happens. The 'C' turns into CO2, the H turns into H2O. H20 isn't significant in the troposphere. Whats the point arguing its abundant somehere down low? CO2 concentrations were higher in the past? yes, millions of years ago. How is that relevant? Try taking look at real current temperature and rainfall data, and then see if you can support the pretence that nothing is going on. because thats

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  • How to Run a Battery Electric Clock on Solar Power--Part II

    Circuit looks fine to me. You could maybe simplify it a tad with a zener diode across the solar cell and a series diode to the supercap, allowing everything to be built from the random diode grab bag, but that's not a significant improvement. Solar cells are supposed to be a light dependent constant current source so the resistors are optional. Very much doubt you would fry a supercap with your circuit.I'm wondering whether the supercap would have longer life than a NiMh battery however. Battery life is usually all about discharge cycles of full depth, and the cycle depth would be very small in this application (assuming you get sun at least once a week say). I had to replace the 'supercap' in my Seiko kinetic watch - it wore out. And NiMh batteries are readily available.

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