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    Tesla 4680 tabless battery

    Sandy Munro got a look at the new cells at the Texas party the other day: https://twitter.com/live_munro/status/1512215223268216833
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    Rolls-Royce world’s fastest all-electric aircraft

    It's interesting that they talk about how they've recruited a big experienced team for this internally important project, but the powerplant is just three YASA motors bolted together. I guess those things are hard to beat.
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    practical range

    Heh, you didn't mention off-airport! Though, maybe for paved strips "not even close, at any price" could be "getting closer, at the price of a fancy Cirrus"? I think off-airport ops are likely to remain challenging for EVs even after regional jets, with all their infrastructure support, are...
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    practical range

    Could any of the SunFlyers have done the trip? Not available yet, but SunFlyer 2 seems to be getting closer to a cert.
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    Open Source e-Powered Paraglider forum

    Yeah, I guess the zero-torque nature of the multiprop electric PPGs would be great for flying a paraglider wing without having to set it up specifically as a paramotor wing.
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    Pipistrel e plane surges production

    Cell choice is discussed a bit in the podcast in the first post. Although they don't say the specific cells they're using, they do say the energy density is significantly worse than state-of-the-art in order to support multiple back-to-back charge/discharge cycles per day without too much...
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    Pipistrel e plane surges production

    Right, this seems like it would only make sense to the bigger flight schools as an ab-initio trainer, and maybe an hours builder? There's apparently a guy in Canada who bought his for commuting around Vancouver though, so I guess the duration's enough for some people... BTW, for those...
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    Pipistrel e plane surges production

    Wow! 5 to 6 a month is serious production. If they maintain that rate for 12 months, it would put them easily in the top 10 selling aircraft for the year. For a short-legged, two-seat trainer! (Unless I'm misreading this http://www.fi-aeroweb.com/General-Aviation.html)
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    The Snow Joe ION18SB Snow Blower... modified..

    1k? Ouch! It was 600 here. I'd be interested in the internals myself, but the 3 year warranty is discouraging me from cracking the case open. I had one of their lawnmowers die on me this summer, and they replaced it with a newer model, so it's worth not voiding I think. At 60 amps/2.4kw, I bet...
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    The Snow Joe ION18SB Snow Blower... modified..

    Awesome. I just bought the 56v Ego snowblower with 2x5ah packs. On the 4 or 5 inches of wet snow we got at the weekend, it cleared my driveway, my front path and the sidewalk in front of the house. Not much energy left by the end, but it didn't quit. It couldn't get much of the snow that the...
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    Roborace ..driverless AI race car series !

    Do you think human racing will be obsoleted? Even a cheap PC (hell, maybe even a phone) can beat a chess GM these days, but nobody cares about computer chess matches. Could be that autonomous racing cars stay interesting right up until a human can no longer beat them, then everybody stops paying...
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    EMALS, linear motor carrier jet launch system

    Of course, launching using flight engines has the advantage that you know your engines are running well enough to sustain flight before leaving the ground.
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    E-Glider

    Looks like a really nice, compact setup. Where is the battery mounted in the in-flight picture you posted? Between the pilot and the motor?
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    High Performance High Powered Electric 300+mph Racing Plane

    Similar idea and specs to the Siemens powered electric Extra 300. http://www.siemens.com/press/en/feature/2015/corporate/2015-03-electromotor.php
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    Racing and efficiency

    On the topic of fast starts and clutches, Brammo actually did this with their bikes, so have some empirical evidence on what worked better. http://brammoforum.com/index.php?topic=2054.0 has some discussion in the last three comments. TLDR : "Slipping the clutch just slows you down."
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    World Record Hoverboard Flight

    Don't think any of these hoverboard style things would fall under FAR-103 since their power off stall speed is going to be, umm, rather higher than the limit.
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    Elephant in the room - Quadcopters...

    I also have no opinion on whether this is real, but to play devil's advocate and run some numbers for fun: I'd guess turboreactor is just a poor translation of turbojet, and large model scale turbojets are available off the shelf (eg...
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    Zero FX 5.7 DC/DC not working

    Not sure how helpful this is, but there's a wiring diagram for a 2013 S in this thread http://electricmotorcycleforum.com/boards/index.php?topic=3603.0
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