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  1. Y

    Understanding Series amperage load across a pack.

    Glad I could clear that up! As far as how the load is shared, I’ll let a dedicated battery builder answer that question. I have seen that cable length and routing can make difference but I really don’t have any experience in that department. Word to the wise- drawing max power from them will...
  2. Y

    Understanding Series amperage load across a pack.

    Divide the number of amps you want to pull by the number of parallel connections and that will tell you how many amps each cell group is going to deliver. If you have a 48v 13s10p group and try to pull 100 amps from the battery, each group of 13s cells will see 10 amps. If you have a 48v 13s5p...
  3. Y

    Understanding Series amperage load across a pack.

    Paralleling 2 48v 50ah packs would give you a 48v 100ah pack. Series of 2 48v 50ah packs would give you 96v 50ah. Both packs are the same capacity of 4,800 watt hours. Don’t rely on bms ratings to guarantee the current that a battery pack can deliver. You can put the largest 10000a bms on...
  4. Y

    '91 Suzuki DR 250S

    You’re going to want a bigger/better controller than the em150. If your battery is 72v 100ah, you’ll be able to pull a couple hundred amps and you’re gonna need it with all that weight. Check out the ASI BAC8000 or a Kelly controller that can do 500a+.
  5. Y

    Vector Typhoon Frame / QS 205 / 20s15p 30Q / Nucular 24F

    Got my Vector frame set up, Nucular 24F controller, and a new qs205 5T motor. This thing rips!! I also added a quick connect charger to the top of the frame.
  6. Y

    Temporary precharge circuit

    I really appreciate all the feedback and conversation here. I'm going to take my ceramic resistor and create a bypass switch for it. Thanks to everyone who responded!
  7. Y

    Temporary precharge circuit

    Gotcha. I measured 1000ohms resistance with a multimeter on the ceramic resistor. 72v battery divided by 1000ohms = .072amps of current. 72v X .072a = 5.182w. The resistor is rated for 10w so I think I’m good. Just nervous because I don’t like big sparks haha.
  8. Y

    Temporary precharge circuit

    Yeah I’m familiar with them but I’m set with keeping the xt150’s. I’d rather do a proper precharge than rely on the xt90s nowadays.
  9. Y

    Temporary precharge circuit

    Hey all, I’m having trouble connecting my antbms controlled battery to my sabvoton. If I power up the discharge mosfets and connect the battery, there is a large spark and the bms short circuit protection is triggered. If I leave the wires connected and try to power up the discharge mosfet, the...
  10. Y

    I want a 10+KW rear-drive full suspension ebike with pedals and a top speed of 50MPH

    I have been waiting for a Vector Typhoon frame to arrive in the US that I ordered in January. USPS shipping is the absolute worst.
  11. Y

    Mxus 3000w 5T

    I used to have a mxus 3000 turbo 5t in a 26" wheel. On 72v with about 60-70a and 250pa, I could max out around 43mph on an eeb frame.
  12. Y

    QS Motor 205 50H V3ti

    Here’s the V3TI picture that I promised
  13. Y

    260v Dirt Bike 2021

    260V is going to be hard to achieve without salvaging some EV car tech and trying to reprogram it. You would have to be very knowledgeable about physical hardware and software design. It would be easier to stay within <100v and parallel more cell groups for higher amps.
  14. Y

    Vector Typhoon Frame / QS 205 / 20s15p 30Q / Nucular 24F

    I got impatient waiting for the Vector frame to show up, it will probably take another 2-3 months to arrive. I ordered a black EEB clone from Amazon and it showed up in 2 days. I had to modify it so the battery would fit and the controller could rest in the bottom cover. I finished the build...
  15. Y

    Common charge/discharge wiring w/ Sabvoton controller

    Thanks for confirming, I’m familiar with the sequence of first plugging in the charger.
  16. Y

    Common charge/discharge wiring w/ Sabvoton controller

    I have a battery pack with common charge/discharge wires. Because the same wires are used for charging and discharging, I'm attempting to creating a way to charge my battery without unplugging it from the controller. I've attached an image of an idea I mocked up. If you can't see the image...
  17. Y

    Vector Ebikes taking >2 weeks to ship - Anyone else with this experience?

    I ordered a battery and a frame from them recently. The battery got here about a week after they shipped it. The frame has been stuck in the USPS order status of "Origin Post is Preparing Shipment" since Jan 23. I researched this status a lot and it looks like its a general catch-all for the...
  18. Y

    How to dissasemble a Mxus rear hub?

    Yeah the link for the picture doesn't work, please upload to the forum. To open the motor from the brake mount side, you'll have to break the factory seal on the side cover. Start with a razor blade and work your way up to a flathead screw driver. Hit it pretty hard and it will start to separate.
  19. Y

    Vector Typhoon Frame / QS 205 / 20s15p 30Q / Nucular 24F

    Shinko 241 tires and tubes, Magura Throttle, black spoke covers, and XT150 connectors all arrived yesterday.
  20. Y

    Vector Typhoon Frame / QS 205 / 20s15p 30Q / Nucular 24F

    Its been a while since I built a high powered bike. I'm going to be using this thread to document my progress as things come together. Here is a list of all the components I'm planning to use: Vector Typhoon Frame - I have tried the EEB clone frame and it worked well, but some design problems...
  21. Y

    Grin Phase Runner / CA3 and BBSHD

    I have a Phaserunner MT and CA3 paired to an old 72v pack. It took some time to get the phaserunner settings right. I got a lot of motor stutter after doing autotune. Before I fixed it, 1/5 throttle the motor would stop as soon as it picked up the drivetrain slack. When the chain pulled against...
  22. Y

    Maximising the stealth bomber frame

    I read through your website about the evolutions of your first build, sorry it got stolen. The new build looks great, I'm very interested in seeing the continued progress. What are the specs of the 72v 70ah battery?
  23. Y

    Sondors x new bike the Metacycle

    IF they made a dirt kit, I wouldn't expect anybody to competitively race it. It would just be for the average weekend warriors whose definition of "off-road" means hopping a curb every now and then with the occasional ride down a gravel trail at their local state park. Lots of people on here...
  24. Y

    Sondors x new bike the Metacycle

    This is very promising. I don’t see it being a game changer, the technology is nothing special. The price point is perfect. Hopefully they’ll make a “dirt” version with a better suspension. Maybe there will be a future option to double the battery and I’ll in the empty frame space. They could...
  25. Y

    QS Motor 205 50H V3ti

    I ordered a V3TI about 2 weeks ago. When I receive it, I’ll post some pictures here (if I can remember haha).
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