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  1. G

    Ku63 controller at 12s voltage

    “Right” except for having to manipulate LVC and shunt resistance. Fair enough though, I’d probably have done the same. Hope it works out for you.
  2. G

    Ku63 controller at 12s voltage

    I recall you using Votol controllers. Why not cough up fifty bucks for an EM-25?
  3. G

    Do I Need a E-Brake?

    Inanek, your method is unnecessarily risky. If you pull the brake lever firmly instead of feathering it, you won’t launch into traffic if the brake switch system fails in any way.
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    Burned yellow butt splice connector

    It wasn’t necessarily poor junction between cable and terminal. There’s little by way of spring retention with bullet connectors, they’re essentially just friction fit, so loosen every time they’re reconnected, and suffer from wiggling or strain. They require strain relief at either side of...
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    Control box

    No worries, good luck with it.
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    Control box

    Yes, E-HP explains things better. You can quickly narrow the considered set by eliminating the motor wires, earth wires, and high voltage wires. There’s only one wire specific to the throttle. The other two required for its operation, ground and 5V, for convenience will typically be bundled...
  7. G

    Control box

    You’re looking for 5v, earth, and one other. Neutral is rarely anything other than black, and easy to find - put your meter’s negative on it and probe for pack voltage on red/orange wires. If you find pack voltage, you have your earth. Leave your meter on this earth, and probe for a 5V wire...
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    RadRunner Plus Rebuild

    Fair enough. I couldn’t envisage it, so did an image search. Looks suitable with a kid. 2x adults seems obviously throttle only. Most of the configurations in the photos are with regular telescoping post, so that the parent gets proper leg extension. My requirements are a little different …...
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    RadRunner Plus Rebuild

    I like the mermaid diagram. Looks like useful software, worth checking out. It’s a short wheelbase step thru frame. Are you sure you want a rear passenger? The only configuration I can see working is rear facing, with you riding standing, and then without a passenger you having to sit on top of...
  10. G

    short circuiting motor phases via automotive relay and RF remote for safety

    I use AirTags. They’re great little gadgets. It’s just a pity that so many people are paranoid and disable the Find My feature.
  11. G

    Control box

    Throttle’s easy to find. Just power it up and measure voltages on three pin connectors.
  12. G

    Motor controller for MY1020D - Tesla Cyber Quad

    Votol can run MY1020 beautifully. I’d suggest revisiting that option, since you already have the controller. If you post your config, I’ll have a look at it for you.
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    Help me choose a motor / battery set up :)

    You’re getting good advice. The point about speed reducing proportional to battery voltage is important in your use case. The fast wind AKM100H is up to the task. The KT controllers are also good, except you’re going to want >52V and/or field weakening. You’re a good candidate for VESC. And if...
  14. G

    Help me choose a motor / battery set up :)

    Yeah, it’ll definitely fit, if you elongate the flat part of the axle with grinder/file. I have saved dimensional drawings of the motor that I’ve downloaded from various places. I can post them if you like. was going to use one as a mid-drive, because the clutch can be flipped (before opening...
  15. G

    Help me choose a motor / battery set up :)

    120mm spacing is easy enough. Have you looked at Aikema 100H rear motors? Consider a 328rpm version, with controller and battery in small saddle bag. Bottle batteries can also be neat. There’s Kunteng controllers that sit inside the bottle battery mount. You’re not fooling anyone that it’s...
  16. G

    Sensorless controller options, >60V, >20A, torque throttle

    Yeah, a programmable controller needs to be on the near horizon for that reason. Unfortunately there’s no real empirical torque data for any particular gears or clutch - seems like you have to break them to find their limits. I’ve never run more than 17 battery amps with geared hubs (all 250w...
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    Sensorless controller options, >60V, >20A, torque throttle

    Yep, I’ll order spares for sure. Good to know. I’ll order one. A cursory glance at a few specs didn’t reveal any mentions of soft start, unfortunately. I’ve got bigger direct drive motors that won’t overheat, and will use them if a Bafang BPM can’t handle the load. They’re not legal though...
  18. G

    Sensorless controller options, >60V, >20A, torque throttle

    Thanks again. You’ve given me confidence in the gears. The bafang clutch is draggy, but otherwise seems ok. So, I’m going to order a cheap dual mode controller to get the ball rolling while investigating VESC. I’ve had a quick look for dual mode controllers with 100V mosfets, and they seem to...
  19. G

    Sensorless controller options, >60V, >20A, torque throttle

    Thank you AW. I had no idea a phaserunner would be suitable, let alone simple to setup. AUD$650 though. The alternatives would need to be incredibly complicated and compromised to be able to justify that outlay. So I’ll have to explore VESC. Hopefully find a tutorial to get a feel for how...
  20. G

    Sensorless controller options, >60V, >20A, torque throttle

    The appeal of these motors is the “200w” inscriptions, which means I can legally use them with throttle and no PAS. They were from postal delivery bikes. Anyway, they’re well packed with copper that pretty well scrapes on the side cover. There’s barely a millimeter to spare. Would I need a...
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    Sensorless controller options, >60V, >20A, torque throttle

    Cheers AW. I’ve always coveted a phase runner, and playing around with VESC was just about inevitable at some time, as in there was eventually going to be a project that demanded it. Although I always imagined it’d be for the small form factor, never that it’d be for sensorless capability. I’ll...
  22. G

    Sensorless controller options, >60V, >20A, torque throttle

    G’day all. I have a couple of sensorless Bafang BPM front hub motors, and an application that they’d be suited to. I do not have compatible controllers, or any experience with them. I haven’t begun researching the options yet. I was kind of hoping someone here could point me straight at a...
  23. G

    Currie eZip Scooter mega mod ideas

    More motor is always a good thing. More speed isn’t though. I converted a similar gas model to electric. The lack of suspension was a dealbreaker. I’ve built a couple of other 10” wheeled scooters with 60mm travel front and rear, which rode beautifully up to 40mph, at which point things start...
  24. G

    Dealing with the trike wobbles.

    Supposed to be a trike thread, but whatever. You can both be right. At higher speeds the counter-steer moment might be imperceptible, so it’s easy to believe that you’re simply leaning into turns. But at low speeds it requires an obvious wobble off of the hips to initiate turns, whether or not...
  25. G

    Best sort of frame for a mid drive?

    Yes, something like that. While rusted out frames typically show more cosmetic rust than yours, a relative absence of surface rust is no guarantee. And there are plenty of bikes with more rust than paint on them that are actually still structurally sound.
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