Sauger-Junky
10 mW
- Joined
- Oct 15, 2017
- Messages
- 29
Hi,
we build am Electric motor bike and the game is for us most power we can handle with MTB parts
https://endless-sphere.com/forums/viewtopic.php?f=28&t=96858
at the beginning we just convert a bosch alternator with 103x40mm rotor to a BLDC but at 70 volt and 50 amp the magnetic field jump over
nearly the same as the rotor get 12 volt or16 volt
so we build a new rotor with 12 pole eatch 2 magnets with 40x10x5mm neodym 45n
the ari betwen magnets and stator is ~0.4mm
we fix the magnets with secondglue and later we put aramid and epoxy around it
i breake nearly my finger to but the magnets on the rotor till the secondglue hold them on place you have to push them with ~8 kg
the magnetig surface is 85% so it is perfect for the sensorless controller
at 70 volt we put 100 amp in and at 5°c outside the stator has 25°c after 15min testing
next test will be 100,8 volt and 100 amp
the weight of the motor will be around 4kg
on star it tourn 28 u/min per Volt
on triangle it tourn 48 u/min per Volt
we build am Electric motor bike and the game is for us most power we can handle with MTB parts
https://endless-sphere.com/forums/viewtopic.php?f=28&t=96858
at the beginning we just convert a bosch alternator with 103x40mm rotor to a BLDC but at 70 volt and 50 amp the magnetic field jump over
nearly the same as the rotor get 12 volt or16 volt
so we build a new rotor with 12 pole eatch 2 magnets with 40x10x5mm neodym 45n
the ari betwen magnets and stator is ~0.4mm
we fix the magnets with secondglue and later we put aramid and epoxy around it
i breake nearly my finger to but the magnets on the rotor till the secondglue hold them on place you have to push them with ~8 kg
the magnetig surface is 85% so it is perfect for the sensorless controller
at 70 volt we put 100 amp in and at 5°c outside the stator has 25°c after 15min testing
next test will be 100,8 volt and 100 amp
the weight of the motor will be around 4kg
on star it tourn 28 u/min per Volt
on triangle it tourn 48 u/min per Volt
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