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    Trolling Motor Woes

    I got an open box Intex 40lb trolling motor to throw on my inflatable. Seems to work well on 12V lead acid. I used some leftover 18650 cells to make a 3S 60AH battery to power the thing. It ran great in my pool, giving me almost 2 hours of thrust at full speed until it cut off. The voltage...
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    Test speed controller while awaiting throttle

    I have a 48 volt speed controller I got secondhand, and it came with a throttle that was broken. The hall sensor in the throttle is destroyed and will need to be replaced. While I am awaiting a replacement throttle, I wanted to test the speed controller. When i supply power, I am getting 4.5...
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    Euroscooter to drift trike.

    I came by a mobility scooter on the cheap ($20)... http://euroshop.mybigcommerce.com/euro-scooter/ The wires cut, so I just had to reconnect the phase and hall wires and get a new key... I cut down the fork and seat, and welded on some foot pegs to make a drift trike. Obviously, the governor...
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    Leaf hub 36V/48V

    I am looking at a knockoff of one of these: https://www.leafmotor.com/hub-motors/18r-electric-hub-motor.html That a local seller has on offerup. He says it is 36V/48V, but on Leaf website they have two different model numbers for 36v and 48v. The speed controller I have to use is 48V, as is...
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    Hover board motors for mountain board

    All of the builds I have seen for e-skateboards and mountain boards use brush-less motors with a belt drive to the wheel. I have two hover board wheels sitting around. I think they would fit onto the truck pretty easily. Is there some reason no one uses them? I think two of them would...
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    Duly Hover Train engine

    I needed a quick way to come up with a train for my church's trunk or Treat event last night, so I welded together a few hover karts and the Crawler was born. Worked great with three harbor freight wagons. Elvis train was a hit!
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    Toying with a cheap hoverboard BMS

    I inherited some hover board battery packs, so I decided to mess with them a little bit in preparation for building some larger batteries. The first thing I noticed is that the overall voltage of the battery was only 24V (should be 36). I took it apart, and found that 2 parallel sets were...
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    connectors, why so many different connectors!

    I finally assembled all the parts for my newest e-bike/scooter. Speed controller, motor, throttle, break, battery. All check. And not a single thing will plug into the other! Battery has XT60. Speed controller doesn't, ok easy fix. Throttle has a tiny little 3 wire connector. Speed...
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    Brushless Controller Board with Hall Throttle

    I salvaged some wheel/motors from a hoverboard in hopes to use them to make an electric drift trike. I picked up one of these: https://www.amazon.com/KKmoon-12V-36V-Brushless-Controller-Balanced/dp/B01LQ80K9K And it drives the motor just fine. By using a variable resistor, the input can be...
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    Hoverboard Motor... extra Hall Wire

    This hover board wheel has been through a lot! :shock: I took it off of a hoverboard that fell into a swimming pool months ago. Besides all the corrosion that makes it difficult to turn, I noticed that it has the three phase wires, five Hall wires, and one extra white wire. The white wire is...
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    Replacing unavailable cells

    Thanks to Amberwolf and Fechter, I have been able to isolate the problem with my BMS cutting out on a used E-Bike that I picked up last week. One of the modules (7 cell array) drops below the LVC of the BMS when under load. The battery is made of individual 22650 Li-Ion cells, rated at...
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    ST charger... convert from 13S to 12S

    I have an SHC-8100LD charger that came with a 13S li-ion battery. For reasons documented elsewhere, I am temporarily covering the battery to a 12S. Here is the website for the charger: http://www.stchargers.com/SHC-8100-chargers-pd563325.html Resting voltage without being hooked up to the...
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    Dissected my Jetson 48V Battery -- power cutting out.

    I got a Jetson scooter/e-bike used 2 days ago. It's fun to ride, but I'm only getting about 8 miles before it turns off. The power just cuts off, especially if going up hill. I can open up the seat, turn the main power switch on and off, and then go another 100 yards until it cuts off again...
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