Power in Flux

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Type: Posts; User: liveforphysics

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  1. Replies
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    Beautiful ride Richard!! I'm glad you're enjoying...

    Beautiful ride Richard!! I'm glad you're enjoying it! I love them too!
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    Nothing remotely similar. Someone just...

    Nothing remotely similar.

    Someone just bought a Zero, changed a couple minor aesthetics, and are oddly claiming it's there own product in a press release.
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    That is with 100% certainty a production Zero S...

    That is with 100% certainty a production Zero S that someone swapped the headlight on and did a little plastic surgery to a few of the body plastics.
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    Size8 gen4 is a workhorse. The Size10 also is...

    Size8 gen4 is a workhorse.

    The Size10 also is available with a liquid cooled sink IIRC. It seems like your tugboat application is unlikely to have strict size/weight limits on controller...
  5. Regarding the comparison, if you factor in the...

    Regarding the comparison, if you factor in the riding experience, then you have no comparison. I've ridden big single cylinder streetbikes as well as various displacement/configuration cafe racers,...
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    Ok my friend. I thought it was a glider not a...

    Ok my friend. I thought it was a glider not a roller. Amazing deal still of course, but I think it's beyond the scope of the budget/time I've got at the moment to also source and setup the...
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    80,793

    Can the bike run from 348v fully charged by...

    Can the bike run from 348v fully charged by chance?
  8. Replies
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    80,793

    I want that bike bad Dice!!!! What voltage...

    I want that bike bad Dice!!!!

    What voltage pack does it need?
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    I think it's a fantastic idea. I also like the...

    I think it's a fantastic idea. I also like the name of the company, and the grass-roots development crew picture. I've got a friend with an electric cargo bicycle that is a similar concept, but...
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    To top that off, he had a large SB120 anderson...

    To top that off, he had a large SB120 anderson connector melt while doing some uber-high-power charging. It's funny to think Terry charges at a rate higher than the power most folks emoto traction...
  11. I'm fairly close to Mt View and always enjoy a...

    I'm fairly close to Mt View and always enjoy a good ride. :-)

    If you want to ride to Scotts Valley / Santa Cruz area, I can quick charge bikes at my house. (Up to 120v packs at up to 100A)
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    Rotor surface is smooth.

    Rotor surface is smooth.
  13. Replies
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    7,911

    In the hubmotor applications, the oil level gets...

    In the hubmotor applications, the oil level gets filled to about 1-2" below the axle bearing. This eliminates the need for a special bearing seal (just RTV sealing the side plates). It works...
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    Your values are around an order of magnitude...

    Your values are around an order of magnitude higher windage loss than my own experience with a similar sized rotor at similar speeds in ATF. One substantial difference however is my tests didn't...
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    ATF is what you want to fill electric motors...

    ATF is what you want to fill electric motors with. It will add some drag to any motor of course, some designs are mechanically more accepting of it than others. Fortunately, it's not a like the...
  16. Make sure you don't let the pack sit with all the...

    Make sure you don't let the pack sit with all the LiPo buzzers/voltage indicators plugged into it, or they will drain the first 2 cells in each pack in a few days.
  17. Thanks for making the class happen bro. :-) ...

    Thanks for making the class happen bro. :-) Super stoaked to go hammer down on more gas bikes soon. :-)
  18. Here is a video of one of the Hollywood...

    Here is a video of one of the Hollywood electric's race from this event. Unfortunately it's the only video I personally have from the event. The video of the open class race with Doug battling the...
  19. M1GP Open class won on electric! First time in history!

    The open class is the fastest group of purpose-built racing gas motorcycles M1GP has to offer, and it was won by my buddy Doug on a street legal mostly stock Zero XU! (With sticky tires and a Sevcon...
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    Good racing this weekend! ...

    Good racing this weekend!

    http://esbk.co/wp-content/uploads/2013/08/eRR-Indy-Race-1.png

    http://www.electricracenews.com/2013/08/turpin-wins-eroadracing-indianapolis.html
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    Sticky: Many of the various colors of plastc shell large...

    Many of the various colors of plastc shell large format prismatics will spit up electrolyte from 10C discharge for 10s. I've heard there are some better than others, but I don't believe ive seen...
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    Sticky: This was the metric I once used as well, but it...

    This was the metric I once used as well, but it doesn't tell you the whole story. You want to look at coulombic efficiency as well (this is another way of saying electron quanity out vs electron...
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    Pretty average to mild ebike build for ES. Looks...

    Pretty average to mild ebike build for ES. Looks like a good rider having more fun than the usual ebike type with it though. :-)

    Makes we want to bring my bicycle to Mulholland. :-)
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    To me, it seemed like he finally "saw the light"...

    To me, it seemed like he finally "saw the light" so to speak, and now understands the ultimate performance drivetrain solution would never include hiccups/interruptions in your power delivery (even...
  25. The numbers shown would be an example of choosing...

    The numbers shown would be an example of choosing an extremely poor cell for an EV. For many EV cells, 0.5C discharge or 5C discharge has bare minimum if any impact on life cycles. Rapidly...
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