Hi, forgive me if i’m posting this querry in the wrong place. I’m trying to establish a good gear ratio for a board with a 12 inch scooter wheel mounted through a cutout in the center. I have a Torque Boards 6374 190 kv motor that I’m having trouble figuring out the maximum RPM of. I found a formula that requires the number of hertz, which i cant find an answer to either. The formula is (hz x 60 x 2) / number of poles.
My plan was to use an 80 tooth wheel cog and 16 tooth motor cog , which I bought from electricscooterparts.com. The 80 tooth is the biggest wheel cog they sell. I asked for feedback on here about my choice of gear ratio and was told that unless my main goal is top speed I should go with a higher gear ratio. I’m guessing that means there wouldnt be much get up and go with my 12s5p, 36v, 14ah, 480wh lithium battery. Can help me find the hertz and or rpms of my motor. No literature came with it.
Oh man, i really stepped in it here. Battery fuckery, love it! So i furnished the wrong ah, it’s actually 10. I’m pretty sure it’s lithium ion. Here’s a pic.
Not really, at least not easily. You’d need to drain the battery and measure how many amp hours flowed through some current shunt
Theoretically you could get one of those $20 power meters off Amazon which tracks Wh used and connect the battery to a load (maybe a 50W resistor or something with a fan) and let it run until it is 30V (that is ‘dead’ for your battery), but it’s not particularly accurate