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southernman

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Everything posted by southernman

  1. There is a calculator you can use on tesla's own web page down the bottom of the page https://www.teslamotors.com/models-charging#/calculator I don't think electric cars are going to be aimed right now at every kiwi, only those who see the value in them and those who can afford the capital purchase price. In the US especially California there are large rebate schemes to push the sales of electric cars which don't exist here I think, could be wrong I guess. If you think more a long the lines of pollution reduction and other benefits such as safety, self drive radar etc etc it's a no brain
  2. Wheels, $ 5 to $10 per fill according to this: link for a NZ fill. You can't really compare a Tesla US 70k to a 35k car. Just not the same vehicle. I drove one for 4 days in the US last week, Model S P85D and in insane mode it's awesomely quick. I think this model is around 130k US. They are quicker than most sports cars. This shows just how quick it is: https://www.youtube.com/watch?v=9cA1doO_9h8 Like it or not they are coming and will continue to get better and drive battery technology. The only problem being the current price of oil!
  3. Fair enough. I just checked and these ones have been supplied by Orion the power guys! They are industrial looking things. Wife tells me we have a box of them from the networks people and so does everyone up the road. We have a transformer up on the ridge where we are and power spikes are a real problem. The last insurance claim was extensive. Yes we now unplug the stuff we don't use or turn it off but it's like a second home as I work there 3 days at a time now I have sat internet.
  4. All I know about power surge equipment is that after loosing our pellet fire, microwave, hair dryer, TV, DVD player, washing machine over at the bach due to power spike and then installing plug in power spike protectors they work. Oftener we arrive to find them blown, black or dead and the appliance attached is ok. Sure when i'm at Harvey Norman I don't buy one with the lap top but they do work it seems.
  5. Two words Phosphoric Acid - cheap and buy it in bulk works a treat on all stainless and good for steel surface preparation. Anzor are not too bad but don't pay their cash sale account rate- God that's asking for it!!
  6. Power use is the challenge we are working on at the moment. We are not so much concentrating on the small boat market at the moment but looking at 50 plus feet boats really. On a boat of this size and with paying guests 2500 llitres a day is actually around the figure of total waste. Take 5 people and a shower a day each for 5 miinutes - being conservative that is 500 litres alone (we are talking a charter boat here with water maker). It actually adds up quite quickly. Of course cruising is a different story but this is the market right now we are looking at. At the moment we are using 2
  7. yep can't see why anyone would have a problem with the finished effluent. We have been as low as 2 cfu in finished effluent so better than some drinking water around the place. Ok, so here is the drama 2300 litres a day of waste treated and the size of the unti will be 500 x 500 x 680mm so not that bad but you will need a holding tank on top of this, as the system operates in batches.
  8. Ok, UV will only work if it's part of the process, and then energy and retention times will be issues also. The best path forward and it is possible is using what is called a membrane bio reactor or MBR for short, google it. I can't say too much as the project i'm working on right now is finalising the design on a low energy enclosed MBR that will fit in most 40 foot plus boats and is the size of a larger holding tank. UV is known for ballast water treatment which I am involved in for large ships. This is now a common accepted process for ballast treatment for discharge and as you prob
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