Electric Armageddon

Ever wondered how you would fare without devices electrical or electronic?  I got a taste recently with the failure of multiple systems.  So many it’s hard to get them in the right order.  I think the first to go was the phone.  Not the phone in my house sitting on the breakfast bar, but the landline connecting me to the rest of the world.  Bang! a great clap of thunder obviously very close.  No warning rumbles, no rain, just bang.  It took me days to notice there was no phone.  The average number of phone calls I make in a year is about 10.  That’s right, less than 1 a month.  I don’t use a mobile phone, so that is my total contribution to phone traffic.  I have given up using a modern answering machine type phone as they blow up very quickly with lightening even many kilometers away.  The last one I bought at Harvey Norman, I quipped to the check-out guy “these make great lightening detectors”.  He was not amused.  So I use a 40 year old Telstra phone with no electronics and took it to somewhere with a landline to check it still worked, and it did.  So the fault is in the line.  Next I had to try and raise some interest in fixing the line but I had bundled landline costs with my satellite internet provider, skymesh, to save $10 a month.  I don’t think the satellite people have a shovel to their name.  After two weeks of form filling, they has passed the problem over to Telstra.  If Telstra fix the problem in 2 months I would be surprised.

The next problem was another lightening strike with no rumbles or rain, so no chance to pull the plugs.  I heard exploding electrical equipment a fraction of a second before the wall-rattling clap of thunder.  I dashed outside to find the inverter which powers Possum Valley on fire with flames coming out of both ends.  I had a moment’s dilemma to ponder saving the house from burning down or trashing the the rest of the electrical equipment by hosing down.  The flames subsided before I made the choice.  Later tests showed that also the battery charger and a relay also blown up.  About $1200 of damage .

Next, I notice that I haven’t received  email for a few days.  OK, accommodation inquires are sporadic, but spammers are reliable.   Problem here, so I spend many hours on the internet trying to fix the problem.  I blunder around in circles, logging on here and there trying to prove I am me.  Without success.  Then my website goes offline and I cannot contact that either.  Then my browser goes crazy and will only report “can’t connect” to my website and when I try a new tab, it just repeats the same.  I get  my emails by webmail.  I’m fucked.  No connection to the rest of the world.

Then in the hazy, dreamy hours before dawn, I remember that my website is hosted by a long-time guest and perhaps he hasn’t paid the domain name fee.  I wouldn’t blame him as I neglected to forward him the money for a couple of decades now, but maybe that is the problem.  But I have no way to contact him and do a bit of groveling about my negligence.  Then I realise perhaps I do have a way to send an email as my daughter had come from Darwin and stayed here a few days and installed to my computer a Microsoft suite that included outlook.  Great, but I don’t have the email address of my website host as I got a new computer in Dec and lost my contacts.  Bugger.  Then I find a faded business card on my cork board from 20 years ago.  For a company he folded long ago.  You see how slim and desperate my chances are of contacting him, but I tried anyway.  Through this narrow keyhole of opportunity, he got my email in a plane over Timor Leste while returning from a holiday in the Philippines.  He plugged in his noise cancelling earphones and fixed my internet problems from a middle seat on a plane.

Then I have a more local issue.  No power from the hydro.  No way I am going down the steep treacherous track in the dark, so I wait till morning.  First light I get down there to find the hydro screaming round at double speed, high speed water powering out of the back of the casing having smashed a hole in the aluminium.  I shut it down.  I know either there is no load on the generator, or the generator has failed.  Using a multimeter, I test the power lines for continuity to see if a tree has fallen and cut the lines, but all OK.  OK, generator then.  I visually check connections and brushes.  All OK.  The only electronic device on the generator in a rectifier, which I change for a new one.  Still no power.

I have a very old generator in the shed which had failed, but I think I have repaired with a new rectifier, but had not tested.  I need a power source to test and this is my little tractor’s PTO.  I squeeze it through my workshop doors and hook it up with a belt drive.  Hurrah!  We have volts!  Not as many volts as required, but the PTO is well under the required RPM.  Good.  All I have to do now is swap generators.  Hmmm.  Generator 85 kg.  Impossible terrain.  Steep to nearly vertical.  Slippery.  I have done it before with the help of my son-in-law Blue, but it was a huge struggle.  I am older and weaker and did not believe I could pull my weight.  Still, I put the hard word on Blue, but suggest he find another to help.  He calls in one of his brothers, Marty, who he describes as “pretty strong”.  All Blue’s brothers are farmers who are not unacquainted with hard work, mud, rain and difficult jobs.  So Marty turns up, 100kg of muscle and sinew to do much of the heavy lifting.  Just a well, as I was at the limits of my strength just assisting.  They left, I went down to the hydro to make the final connections, and with some trepidation, fired it up.  It started, purring like a kitten and I knew all was well.  If your power goes off, you wait around with increasing frustration for somebody else to fix it.  Well, here there is no ‘somebody else’.  I feel relief that I have managed the difficulty.  I have fixed it and not wasted the strenuous efforts of friends who heroically came to help me.

A big thanks to those who help me without need or obligation or payment.  Perhaps the message here is to return a favour, or even better, do a favour without expectation of it being reciprocated.

New Water Pump

For the last 48 years I have been using several water driven ram pumps to provide water for Possum Valley.  That is sufficient time to conclude that they can do the job, provide much more water than I need, cost nothing to run and are eco-friendly.  But when something goes wrong, it can be expensive to fix at the local engineering works.  On the down side, they are heavy, made of corrodable material like steel, are very sensitive to any solid matter, and make a lot of noise.  A continuous bang bang at about heartbeat rate, which can be heard 100 m away.  I dips me lid to the very ingenious French innovators, the Montgolfier brothers who invented it in the 18th century.  Using a cannon ball as the ‘clapper valve’.  Cannon balls were freely available then as Britain and France often exchanged them free of charge and at great velocity.  But I digress.  The ram pump also was very sensitive to even the tiniest of air bubbles that got in the drive pipe often by cracks or tiny holes due to pit corrosion.  I have so often had to patch up the drive pipe with clamps and welding, but I can’t weld upside down lying in the creek, so I have to disconnect the pipes with meter long pipe wrenches and lug them to the workshop to weld.  75 mm steel pipes 9 m long are heavy when new, but get heavier when old with internal encrustation of rust and muddy gunk.  And twice as heavy when two lengths are welded together.  I’m getting too old for that shit.

So the new pump is 17 kg, requires low pressure 90 mm PVC pipe for the supply pipe and pumps twice as much as the ram pump.  It is not sensitive to organic debris or a few bubbles.  It can run at very low heads and flow rates to keep pumping in the dry season.  If a cyclone torrent should trash the supply pipes, I can replace them with ease and little cost.  There are no high stress parts that require re-engineering.  What’s not to like?  I am well satisfied with my new pump.  It cannot be heard from more than 10 m away and it has a satisfying ‘gawoosh’ which blends in well with the ambient waterfall noise.  I have installed a 75 mm ball valve on the supply pipe right next to the pump which can throttle the 4.5 m head and control the stroke rate.  I use it as the ‘off’ switch and can set it partially open to get a stroke rate of 2 or 3 seconds as recommended by the designer.

position in creek

I do not have direct feed from the weir, but use large diameter pipes (150 mm) going 25 m to convey the water to a header tank to have a double opportunity to filter debris out of the water.  The header tank is double chamber to trap gravel that may come down in floods which happen just about every wet season.  Now this may sound like a lot of clever design, but actually, I was just cobbling together junk that was lying about the place.  The double chamber header tank is the body of a dead fridge/freezer lying on its back with a hole hacked between compartments so that gravel debris washed from the road should settle out in the first compartment.  The supply pipe to this is some old stainless steel 150 mm chimney pipes and some 125 mm aluminium agricultural spray-line pipes I had laying around for a decade or two.  Surprising what I can scare up when I go kicking piles of leaves.  The final 25 m to the pump is 90 mm storm water PVC pipe which I actually had to buy.  Cheap as chips.  The inner tube above the car tyre is filled with water and is just a weight to shorten the time the top part drops down.  You can see the piston at the top of it’s cycle.  When the tyre below inflates, the top part with the cylinder rises and that is the pumping part of the cycle.  It is unusual in that the piston stays still and the cylinder moves.  There is an inlet pipe in the plastic bucket which has a few rocks to keep it from floating away.

pump shut off

The fixing of the supply pipes did not go as smoothly as I had hoped.  I did know that trying to find footing on a steep waterfall lubricated by layers of slime mold was going to be a challenge, but I didn’t anticipate the problems of drilling the holes for the rock bolts to anchor the supply pipe against floods.  The rock was bloody hard and the tungsten carbide drills in a hammer drill were making feeble or no progress.  It didn’t occur to me to sharpen the tungsten carbide edges, because I had often worked with percussion drill rigs when doing mineral exploration work.  The drill bits are a flat plate, maybe 200 mm in diameter with balls of tungsten carbide protruding from the surface of tough steel.  The down-hole hammer which moves less than a centimeter is driven at high speed by hydraulics from a 300 HP engine on the drill rig.  It is a very brutal way of smashing your way through rocks hundreds of meters underground.  So it took a while for me figure out that I needed to resharpen my modest little drill bit.  Balls work if you have 300 HP to drive it, sharpening works if you have a feeble hand drill.  I still shattered a couple of the carbide teeth and used a few bits, but I got the holes drilled.  A couple of the the rock bolts were to anchor the pump.  I don’t want to donate it to somebody in Innisfail when the floods come.

exhaust part of cycle

I did try to take a video of it working.  Video works on the camera, but uploading to my computer only the sound track came through in the 13 sec clip, but the picture did not.  So until I can find some IT guru to fix it, you will have to imagine the top half slowly rising in the pump phase, and then suddenly dropping with a fountain of water and a ga-woosh sound.  Total cycle 2-3 secs.

Tis the Season

To be jolly etc etc.  Also the cyclone season.  Though perhaps a bit early this year.  Cyclone Jasper came with plenty of warning and just managed to crank up to a catogory 2 as it crossed the coast at Wujal Wujal a comfortable 200 km north of Possum … [Continue reading]

Blast from the Past

I been sailing small boats since I was a kid in the UK.  Probably 10 years old.  As the 'crew', operating the jib, balancing the boat and at the absolute command of the 'helm'.  Like ships of old, the helm had total control, but fortunately in modern … [Continue reading]

99.9%

You probably know what the title means at a glance.  If I hear another advert telling me some product kills 99.9% of germs, I swear I will scream and curl up in the foetal position if my old bones can manage it.  I mean why???  It is a very … [Continue reading]

Vehicle Recovery

Amongst my many and varied duties as host of Possum Valley, I often get unanticipated disasters to deal with.  Last night it was a phone call from the guests at Maple Cottage as the light was fading, to say they had no power.  There was power at the … [Continue reading]

Off Grid

I have reached my dotage years without ever having paid a utility bill.  No electricity, no water and no sewerage bills in my entire life.  Because I have provided these services for myself.  There is some good news and some bad news.  Yesterday I … [Continue reading]

Living in a Rainforest

There are many good things about living in a rainforest, and some downsides, but first the good things. 1)  Having the green of a forest around promotes calmness and wellness leading to contentment.  Having lived here for 46 years, I add my … [Continue reading]