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    Wind and Solar vs Coal, Gasoline, Nuclear

    I'm on the fence on this one, they say "If the partners eventually scale the project up to 225,000 tonnes a year, they plan to make carbon-neutral hydrogen by burying the carbon dioxide released in the process under the seabed offshore Victoria." Most of the CO2 which is "buried under the...
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    Ivermectin

    An N99 mask is 99% effective at blocking droplets. Feel free to argue how sticky the droplets are, how much dried virus survives or variations in filtration absorbtion adsorbtion etc. There is a ton of data out there on this. Omicron is spread by droplets therefore the masks stop the spread of...
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    Ivermectin

    This spends the first 14 pages justifying why it's ignoring data from nearly all studies Pages 14 to 40 might sensibly termed "our cherry picked data and the ambiguous results, proving nothing" In their words "Out of the 1,048 studies, 34 met our eligibility criteria." IE they call ita meta...
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    Ivermectin

    It reveals my grasp of reallity rather than wishful thinking Ivermectin is proven to be a wormer and it is not proven to be a treatment for COVID. To quote Wiki: Ivermectin is a “veterinary medicine to prevent and treat heartworm “ I do not hide my prejudice. I prefer scientific proven data...
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    Ivermectin

    In the Reuters article this quotes as it's source, they say “Now, a number of retrospective reviews and meta-analyses have been released, which mostly agree that studies to date have generally been of low quality and high risk of bias, but offering different conclusions about whether ivermectin...
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    Is this safe or risky?

    5A is the continuous current. The inrush current will be higher due to the caps, for AC or DC powering a PSU I'm assuming inrush would be similar for AC or DC - thoughts? A domestic mains power switch will also have to deal with inrush when connecting to one or more PSUs I put my clamp meter...
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    Is this safe or risky?

    Hi E-HP, I didn't calculate the inrush current as being 5A. Each buck converter draws 2A nominal so a 16 A mechanical switch for 2 of them is probably going to last a while in my opinion. Feel free do disagree and provide better estimates Calculating would require data which we don't have and...
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    Is this safe or risky?

    Sure, that example was extreme, it's an illustration of the variation in advice you can find on Google and depends on application. I've put 1500A though 8Ga for a few ms :) Some discussion here https://www.rcgroups.com/forums/showthread.php?198178-Wire-thickness Saying that the switch and wire...
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    Is this safe or risky?

    True, you need to read the spec sheet on the switch and ensure it can take the load and DC rated are more rare I don't know whether the peak current and voltage being higher makes much of a difference vs the zero switching The first example industrial breaker type switch I found has the same...
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    Is this safe or risky?

    Risky but could be safe Low voltage for safety to the handlebars is critical Low current for thin wires to the handlebars avoids lots of voltage drop at high current I'd suggest 2x 20A 12V relays controlled by one handlebar switch and a manual 100V switch to avoid battery drain A BMS might do...
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    3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?

    So a bit of an update and a few questions: Re-lacing the wheel - 4 bike shops were contacted, dropped if off but had it returned because their jig wouldn't fit the M16 axle, contaced another who agreed then changed his mind and referred me to a sixth who reckon that the MXUS hub flange and the...
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    GREETINGS, CAN YOU POINT ME IN THE DIRECTION OF A COMPARABLE controller in 2021

    I thought the chances of magic smoke were higher before I have half decent wiring in place and I probably need some spare crimps for temporary wiring. I like the ampseal connector so far - better than some ITT ones with the spikes out the sides of the crimps that can short together Mine came...
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    GREETINGS, CAN YOU POINT ME IN THE DIRECTION OF A COMPARABLE controller in 2021

    It's not running yet, I'm working out where to put the controller, haven't built the battery yet & Wheel is being rebuilt I've got a MXUS 3k (4T) which will be the weak link but also the cheapest bit so that's ok 100 new Molicel INR21700-P42A cells so with 32S 3P I get 135A peak for a couple of...
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    Wanted..120~160V controller

    Project creep I guess The Sevcon can take higher current and voltage, it has some clever software that predicts how hot the motor is getting, and german engineering tends to be good. The manuals are well written, detailed and targetting professional vehicle manufacturers so I'd expect quality...
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    GREETINGS, CAN YOU POINT ME IN THE DIRECTION OF A COMPARABLE controller in 2021

    I went for a Sevcon Dragon 8 in the end for a higher voltage but lower Amperage and because I couldn't get a Nucular at a sensible price and timescale. The Dragon 8 can go from 50v-140V working (145V non operational) and 100A rms for 1hr, 325 for 2 mins and 400A for 10S output PS this is not...
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    Wanted..120~160V controller

    I sorted out the problem with ordering the 3T motor, and so was able to order the 3T motor, which I then did. I then ordered the Nucular but the order did not go through. Ebay reported there were 8 for sale but then said there were none for sale. I then had to go back and cancel my original...
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    Wanted..120~160V controller

    Sorted out the motor problem and ordered it (3T) Ordered the Nucular controller (4 available) - ebay error - none available Cancelled the motor order
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    Wanted..120~160V controller

    There is stock with the sur-ron shop on ebay for the 12f at a bit of a premium. https://www.ebay.co.uk/itm/224272493979 Nucular is 20- 90V in the datasheet, 95V settable on the screen and and I've seen 98 ish Volts abs max somewhere. https://nucular.tech 21S should be ok and 22 looks possible...
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    Wanted..120~160V controller

    Not yet, I'm revisiting the idea of a Nucular 12f controlller and changing to a MXUS 3T motor, this gives me 7.75 Kw instead of 9 Kw peak theoretical. It also charges so I don't need to build a 135V battery charger, it comes with a display, is smaller and only 600g How about you - any progress...
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    Spot Welding Copper Strips to 18650 Battery Cells

    I've thought of soldering the copper to the nickel before welding to the cells. Could be as simple as single core copper onto 0.15 strip. I thought of using two off 5mm strips in parallel with copper along the outer edge then weld between them.
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    Wanted..120~160V controller

    Guess that rules out the Yuyang King There's a size 2 Sevcon which was yet to be realeased last time I checked, might be an option. 60A continuous 150A for 2 minutes and 180A for 10S which is plenty for me as the motor will overheat first The Sevcon has the power needed, looks more robust but...
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    Wanted..120~160V controller

    So: PowerVelocity won't sell me one of theirs Lyen don't do high current The APT96600 weighs 6 Kg Nucular don't do high enough voltage (yet) I don't want something without Bluetooth or the ability to program it, so Current Thinking: YKZ120150 60-120V 150/450A £230...
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    new eZip motor

    A bigger tip on the soldering iron can help - it doesn't cool down as fast when it hits the cell so transfers the heat faster Laser temp (assuming IR with laser dot) is innacurate on shiny metal without calibration. Acid flux for stainless might not be right for nickel Lots of solder on the...
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    Tempted to lick my 50 volt battery

    Due to the high resistance, there's minimal sag - you could zap yourself through an ammeter to prove this If you manage to get the probes stuck in your tongue, they may get past the layer of high resistance skin so probably achieve much higher current - again measureable though the stabbing...
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    Wanted..120~160V controller

    Received a reply from Edward Lyen who has his controller (abs max 150V) available but he advised "the power rating for 24 FET 4115 controller is around 7000 watts" Price he gave was $399,
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