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    Bird Engineering Starbirds

    The seats just cracking on the surface and exposing the inside, it might be enough to just put some vinyl leather over it and keep the original padding. Im using a 36v MY1020 motor, 1000w. Not super powerful but it gets me going 20mph. I put a live axle in because I live in a place with lots of...
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    Bird Engineering Starbirds

    Here's my Starbird! Still need to paint it and restore the seat. It has a custom live axle that I made from scratch, just cut the ends off the solid axle and welded on bearing cups I machined! Rear tires are some old snowblower tires. Gonna get new front tires / rims soon.
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    Remember this?

    So remember how a while back i made a post about a yk31c controller not working? yeah this is the same bike now 🥶 Something happened 🤪😰 aw crap i posted in the wrong area :(
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    yk31c not working please help

    took it for a test drive and found a new problem... it stutters when under load, and i think the reason is some other resistors are connected to the one i changed. and when i change one the others might get offset too. heres a schematic (i changed R31)
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    yk31c not working please help

    the whole project cost about 200$ but the controller cost 20.
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    yk31c not working please help

    thanks!
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    yk31c not working please help

    top speed is 15mph, stock is 12mph.
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    yk31c not working please help

    finished my project, here are some pics! the project started from a 75$ razor mx350 and i have been upgrading it afterward!
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    yk31c not working please help

    sure! i'll send pics when done! (hopefully today)
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    yk31c not working please help

    made it work at 24v thanks for the help! (all i had to do was change the resistor)
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    yk31c not working please help

    i tested it and it worked! thanks! though i dont have a 36v motor so is there some way to bypass the cutoff? edit: i found how to do it (i can change R31 from 3.6K to 4.7K)
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    yk31c not working please help

    alright im gonna try it thanks!
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    yk31c not working please help

    Alright thanks!
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    yk31c not working please help

    so i have a yk31c controller (36v 500w but im using 24v). when i got it i wired all the important stuff for a bench test (motor wire, power, lock, throttle) and nothing happend. I tried everything to make it work but i cant figure it out so im asking for help!
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