Recent content by fruitman

the motor rating is determined by how many watts it can handle constantly without overheating in an ambient temperature room of 25c. do they simulate wind cooling the housing? im not sure.. do they run the motor for 24 hours straight? not sure. are they putting resistance on the motor to...

i should be able to run my motor up to 100c without damaging my coils but i dont want my magnets to get up to 100c and risk demagnetizing them. now that i have statorade in the motor the heat from my stator is transferred into my magnets, does this mean that my magnets will be 100c if my stator...

the controller i have on this bike doesnt have a sense wire for turning it on and off, it turns on when the battery is connected. i wanted my handlebar switch to turn on and off the bike, so thats why i was unable to use a breaker switch. i was thinking of wiring in a breaker switch and using it...

the spark happens because the capacitors on your motor controller are empty and hungry when disconnected from the battery, so when you first connect the battery the capacitors pull in as much power as they can very quickly until they fill up and reach the same voltage as your battery pack, this...

hi john thanks for using your valuable time to comment on my post. the title pretty much says it all, did you have a specific question? out of curiosity how do you turn your ebike off and on? is there a spark when you connect the battery?

i designed this simple ignition switch/anti spark circuit that precharges and connects the motor controller to the battery using one switch and a minimum of two relays. there is no timing circuit required and no solid state relays. this setup use relays that with coils which require 27 volts to...

hi i am new here and i am just getting into building ebikes. i have two battery packs that are for scooters and one of them has a busted bms. they are identical battery packs, both are 10s3p 36v 7.8ah. i was thinking of just wiring them together to share the same bms so they can charge and...