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  1. N

    FINALLY DONE! 1970 Vespa 50s electrification project

    Awesome looking project! Love the welder and the workshop setup you got going on. Definitely have the skillset to make a successful conversion. It's cool what you did with that half of the stock chainstay/swingarm. That's gonna be a fabulous whip. I think I briefly had the same QS 4kW 10" V3...
  2. N

    Off-Road Dreamin'

    + 1 0 char
  3. N

    Need help figuring out a controller

    It sounds to me like you're being artificially restricted by the controller, or else 48V is not enough to go very fast. You could replace the controller with something better, maybe from Kelly. Otherwise, figure out how to bypass the speed governor. On my original controller (similar looking to...
  4. N

    Sevcon 775A controller ordered!

    Nice man... I too am curious about your battery setup fueling that beast.
  5. N

    Advice on upgrading rear hub motor in Gigabyke E-scooter

    So do you know what controller you have on the scoot? There's a chance it's strong enough, but you're right, move it to the bicycle and go higher power for the scoot if you can. Then you'd have a couple of cool whips by the end. Regarding your motor, that new one you linked is only 1500W...
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    Advice on upgrading rear hub motor in Gigabyke E-scooter

    Do you know what the current and voltage limits are on your controller? It would be good to regard those in order to determine if you want to replace that part. Otherwise, you are constrained to those limits in choosing battery/motor. Regarding the motor, Voltron shows a good example of what...
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    Hub drive vs Chain drive

    Yeah, it's for full-sized motorcycles. It's the latest and strongest mass-produced QS motor. It would be nuts on a scoot. You'd want to use something like a 180/55 tire on it, even though the default rim width is 114m (4.5"), but they'll customise it for you. Otherwise, no traction because the...
  8. N

    Fazer Conversion Completed

    Yikes, that's some bum luck man. I wonder what controller you're using exactly (e.g. KLS14401...). Did you overvolt the controller, e.g. run 108V on a 96V controller? I could see overcurrent being an issue too, as that happened to me before. I think it's good to dial a Kelly back down a bit, or...
  9. N

    Hub drive vs Chain drive

    What about hub motors at this level? QS 17" 14-34kW 80H water-cooled
  10. N

    Off-Road Dreamin'

    + 1 0 char
  11. N

    Hoverboard & motorcycle hub motors MAXIMUM load?

    Oh. So, you want to use hoverboard hubs on your one-wheel, and you're asking about max load on the QS as a separate project. Okay. So two projects. For the one-wheel using hoverboard motors, you may post the details of the motor. Diameter, wire gauge, wattage, voltage winding, width, anything...
  12. N

    Hoverboard & motorcycle hub motors MAXIMUM load?

    The maximum load for the hoverboard motor depends on the exact motor in question. This is assuming the batteries and controller are not the bottleneck (though on a typical hoverboard, they are likely to be). The QS motor can move more weight than you'd ever need to move on a hoverboard. They...
  13. N

    Geared motor vs gearless scooter acceleration?

    I see... well, you know you're maxing out when you're waiting for new materials to be developed 8) The dual-motor option is interesting to me. I remember spitballing with some friends the concept of a dual rear-wheel setup wired to one throttle. You might need to build one of those complicated...
  14. N

    Forklift motor for bike?

    Seconding what these posters have already said. Don't waste your time trying to repurpose that kind of tech. I've worked with some electric heavy machinery (narrow-aisle reach trucks, motorised walk-on pallet jacks, actual forklifts), as well as their propane-powered counterparts, and you'd...
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    Geared motor vs gearless scooter acceleration?

    Thank you John. I'm once again humbled. I read your post several times. Please forgive my ignorance, I've only been modding for a year. I sure have a lot of reading to do... and it seems there's a podcast too. Feel free to recommend me anything, my thread's quite nearby. Cheers man :pancake...
  16. N

    Off-Road Dreamin'

    + 1 0 char
  17. N

    Geared motor vs gearless scooter acceleration?

    It melted because I ignorantly painted my coils to combat rust. Very bad move. The 620A peel-out was well before that, and never led to that kind of issue, so I'd say it means something. Months of such abuse, and the coils were still fine. It got my scoot from zero to 60MPH in about 3 seconds...
  18. N

    Geared motor vs gearless scooter acceleration?

    Chuckle... yeah a couple. :D :D Meltdown, explosion, no warranty, etcetera. You'd basically be allowing it to pull more current than it's rated for by...assuaging...a certain hardware limitation. Nice topspeed, John. What motor are you on? Sadly I just melted mine and had to downgrade. I'll...
  19. N

    Geared motor vs gearless scooter acceleration?

    Controller and battery is exactly the same? I honestly don't know about geared motors, but I do know that startup torque is all about the amperage 8) I've rolled my eyes at recent builds I've seen in-store using 3kW motors paired with batteries/controllers that output only 50 amps peak, and they...
  20. N

    Off-Road Dreamin'

    + 1 0 char
  21. N

    Hub drive vs Chain drive

    I'm sad because I think I killed my 8kW QS hub motor yesterday. See pics on my build thread here. I need a replacement that's more able to handle high power levels, like 20-40kW bursts (maybe as high as 50-60kW). Torn between chain-driven and hub motors now. I wonder what the best chain-driven...
  22. N

    Off-Road Dreamin'

    + 1 0 char
  23. N

    Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

    Smeagol, your build is looking great. +1 for QS product quality. They're really cool guys. I used to have the same motor as you but I traded it up for a slightly larger, 72-120V 8kW version. I think they under-rate their product too since my 8kW motor is being run waaaaay past its redline. My...
  24. N

    Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

    Dude, good luck building an app for that. Although my bluetooth is working fine, I'd be interested in your results because I see a lot of potential. For instance, if the app can report statistics on the fly (e.g. controller/motor temp), then we could build dashboard meters for such things. The...
  25. N

    Ebike scooter project QS 4kw V3 72v, Kelly KEB72601

    You have a KEB... I have a KLS. They don't have bluetooth for KEB? That's unfortunate. It seems they also don't have an Android program. Man :( Your next best bet would be to have the USB plug mounted in such a way as to embed it somewhere secure with the female socket exposed so you can plug...
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