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  1. spinningmagnets

    CABDA Bicycle convention, March 26/27, Las Vegas

    Is anybody going? As of this posting, its only 13 days away There are three cities, New York, Chicago, and Las Vegas one which is called "CABDA West" The event is at the World Market Center I don't even know if there is any ebike stuff there, but there is still no Interbike this year
  2. spinningmagnets

    Index of 12 electric VTOL's

    There will be more to come, but this is a starter... https://www.electricbike.com/12-electric-vtols-that-are-actually-flying/
  3. spinningmagnets

    Question about DIY hybrid EV

    I recall reading about how youtuber "Rich Rebuilds" took the 102V drivetrain from a wrecked Zero motorcycle, and adapted it to a light vintage hot rod with a 3-speed manual transmission. He ended up using only two of the gears, but he reported that acceleration was very nice (and certainly...
  4. spinningmagnets

    72V Milwaukee "MX Fuel" tool batteries

    The search didn't show these on ES yet. They might be interesting to some. They are... "MILWAUKEE Red Lithium XC406 72Volt" As you can imagine, these are for larger tools, they have a light-duty jack-hammer, a sewage-pipe unclogging snake, A light stand, Concrete coring drill (for plumbing...
  5. spinningmagnets

    Kandi Trail King from India

    Good to see India developing its own e-vehicle market. This a bit pricey from what you get, but perhaps with tariffs and VAT taxes, its might be easier for someone in India to get one of these than to buy a ebike or e-motorcycle like Sur-Ron or Talaria from China (who knows?)...
  6. spinningmagnets

    3shul VESC CL700 controller

    I've now seen this controller used on several builds, and the builders spoke highly of it. Does anyone else have any experience with it? What are the benefits/drawbacks compared to competing controllers? Here's an article I put together... "Two Builds using a 3shul VESC"
  7. spinningmagnets

    Ebike shop fire, New York, June 2023, 4 dead

    There have been fires before, almost all of them the result of cheap generic battery packs with cheap generic BMS's, and cheap generic chargers. I don't know what caused this one, at the "HQ Ebike Repair", on Madison St in Chinatown. What makes this fire noteworthy is that four people died, and...
  8. spinningmagnets

    Tesla committed to 48V for accessories, industry may follow

    Their main battery voltage is likely to remain at 350V-400V, but the door locks, headlights, window motors, etc...will be going to 48V from the current 12V sub-system. This is awesome for home power back-up, because 48V inverters to provide 120V AC during a power outage are common and easily...
  9. spinningmagnets

    Building a 48V generator from a car alternator

    This video uses a $200 "Predator" gasoline engine similar to a lawn mower engine. The car alternator is a common 100A unit for $100. It may help to understand the difference between 1950's car generators and what is now called an alternator. The old style generators made 14V at cruise RPM's as...
  10. spinningmagnets

    How long do 18650's last in storage?

    I use 18650's for flashlights at work and at home. I'm sure the duration for 21700's are the same as 18650's. If I find a good supplier, and buy a handful, then stick them in a cool, dark, dry place... They arrive a 3.6V maybe 3.7V, so I assume that's the best shelf storage voltage. If they...
  11. spinningmagnets

    100-Ah LiFePO4 cells, group buy inquiry

    Many of you know Frank from kWeld. He has a source for quite a few LiFePO4 cells, 100-Ah each. He can get them to us for 100 Euro each, and at todays exchange rate, ($1.07 USD) the cost would be $107 each, plus shipping. Here's the thing, he is in Germany. I am in Kansas, and I am willing to...
  12. spinningmagnets

    Arctic Leopard dirt-bike, 72V

    The 560, 680, and 800 model designation seems to be the newton meters of torque at the wheel. Front wheel is 21-inch moto (80/100-21), and rear is 18 (110/90-18) https://arctic-leopard.com/en-us/index.html https://www.youtube.com/watch?v=I_AQ07rh-mU I_AQ07rh-mU
  13. spinningmagnets

    The Vectrix VX-1 info thread

    I knew of these a while ago, when I started at the VisforVoltage forum. They are no longer sold in the US, but they are an incredible deal now. I just read about an owner who bought a VX-1 with a dead 125V NiMh battery for $500, and then swapped-in a pack he made from 18 Leaf modules, for 36S...
  14. spinningmagnets

    Endless-sphere linked on a youtube from Propel

    we are screen-shotted at 1:20 https://www.youtube.com/watch?v=0KMFHDnXPbI 0KMFHDnXPbI
  15. spinningmagnets

    Considerations for using two 14S packs to achieve 28S

    I am curious about what issues would occur if I wanted to use 28S, like Zero motorcycles, but...using two common 14S packs.. If the packs are connected/separated electrically by a large DC switch(s), then I imagine it would be very easy to charge the two sub-packs with readily available 52V...
  16. spinningmagnets

    Dendrite build up, killing batteries

    I've known for some time that when dendrites build up inside batteries, they can lead to a slow drain "killing" a cell in a group by going to zero volts) or if its bad enough, a cascading short leading to a battery fire. I'm sure there's more to it, but...I came across an interesting statement...
  17. spinningmagnets

    Iron Nitride magnets, maybe better than neo's

    There's a new development in magnets, and I will post anything I find in this thread. Iron Nitride magnets / Fe16N2 No rare-Earth elements, cannot be restricted by China Stronger than Neodymium per volume Should cost less to produce than neo's Environment-friendly raw materials, Temp...
  18. spinningmagnets

    Eleek frames, made in Ukraine

    Eleeks production has been suspended due to the war in Ukraine, but I want to start a thread on these frames. They are similar to the Stealth FUTR. Mike / Lightning Rods has built a couple of ebikes with these and he says the quality is outstanding. When the war ends, I suspect these will become...
  19. spinningmagnets

    Ford/Chevy using BW HVH250-115 hairpin motor

    I was researching motors recently, and I was surprised to find that the 2WD version of the Ford Mustang Mach-E (actually a 4-door SUV), was using a BorgWarner HVH250-115 motor, and that's the same motor the FWD Chevy Bolt uses. Further research revealed: The Mach-E has a AWD version, and...
  20. spinningmagnets

    Funny stickers and t-shirts about electricity

    https://www.teepublic.com/sticker/21581185-reddy-kilowatt?feed_sku=21581185D16V&utm_source=facebook_instagram&utm_medium=paid_social&utm_campaign=[FI]_[web]_[g.USA]_[l.eng]_[rem]_[oCPM]_DPA_NonSale_BAU_DR&utm_content=[C.6274113783886]%20[AG.6277447089486]%20[AD.6277447151086]&utm_id=61a68567e2eb2...
  21. spinningmagnets

    BatGroupCraft.com pressure contact battery box

    The contacts use coil-springs that are separate from the contact strip. The bus is reported to be nickel-plated copper. They are trying to generate crowdfunding to start a company. The box appears to be 3D-printed. Maybe silicone bus insulation... The thumbnail pic below shows a 6S / 8P pack...
  22. spinningmagnets

    Nicot E-Dirtbike

    Nicot. Gasser manufacturer, now has one electric model. looks like a QS cylindrical motor, looking for details now...Looks like manufactured in China. "Chongqing Nicot Industry and Trade, LTD". Their website lists a 150cc, 250, and 450, but...not the weights and tire sizes so I can't tell what...
  23. spinningmagnets

    Bullet to XT90 adapter?

    If you buy a pigtailed XT90 set, you can connect them to the battery and controller cables with a crimping connector. I still prefer solder and 3:1 marine heat shrink for that...using the Amberwolf method. https://www.electricbike.com/connectors-halls-throttle-motor/
  24. spinningmagnets

    Water-proofing your ebike, post your tips

    There's a lot of older ES members that are fading away, and a lot of newbies joining. I'd like to preserve some of the experienced ebikers tips to pass on to the new guys, to save them a lot of anguish, time, and money. The best tips will be added to the first post, and credited to the author...
  25. spinningmagnets

    Sticky thread index for "Technical Reference"

    "Electronics 101: Basic electrical laws and calculations" https://endless-sphere.com/forums/viewtopic.php?f=16&t=1580 "Connectors" https://endless-sphere.com/forums/viewtopic.php?f=16&t=2767 "DIY portable/storable soldering station" https://endless-sphere.com/forums/viewtopic.php?f=16&t=49848...
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