Sunder
10 MW
Maybe time for you to start playing in the big leagues then? There's a lot more to learn once you get over 30mph.
1. Maybe time to invest in a programmable FOC controller, with a wide voltage range, and high current limit? Something like a Phaserunner, or even a bigger Kelly/Sabvoton.
2. All those direct drive motors would be easily and safely over-driven in your climate - if you can get the heat to the outside of the case. Have you played around with automatic transmission fluid (Cheap, but leaks/causes drag) or Statorade (Expensive, but won't leak and doesn't cause drag).
3. You should start thinking about building managed 24V packs... Easy to leave at 24V for small stealth bikes, join together two with a series adaptor to make it to 48V, for a mid-range bike, or 72/96V for high performance bikes.
4. Time to look at full suspension disc brake MTBs, or even down hill bikes? I don't know what laws are like over there, but I reckon if you bought a postie bike, it's not much heavier than a decent down hill bike, but now you have ready built motorcycle quality frame suspension, wheels and brakes. I know, I know, money. But you might be able to get one with a blown motor for not much more than scrap value. You can get wrecks in Australia for scrap metal cost ($100-300 - These bikes sell for about $1500 new, so if anything major goes wrong, e.g. motor blows, the cost of labour to strip and rebuild isn't worth the cost to repair, so they are wrecked for next to nothing. That said, labour is much more expensive in Australia than the US, so the same might not apply.)
1. Maybe time to invest in a programmable FOC controller, with a wide voltage range, and high current limit? Something like a Phaserunner, or even a bigger Kelly/Sabvoton.
2. All those direct drive motors would be easily and safely over-driven in your climate - if you can get the heat to the outside of the case. Have you played around with automatic transmission fluid (Cheap, but leaks/causes drag) or Statorade (Expensive, but won't leak and doesn't cause drag).
3. You should start thinking about building managed 24V packs... Easy to leave at 24V for small stealth bikes, join together two with a series adaptor to make it to 48V, for a mid-range bike, or 72/96V for high performance bikes.
4. Time to look at full suspension disc brake MTBs, or even down hill bikes? I don't know what laws are like over there, but I reckon if you bought a postie bike, it's not much heavier than a decent down hill bike, but now you have ready built motorcycle quality frame suspension, wheels and brakes. I know, I know, money. But you might be able to get one with a blown motor for not much more than scrap value. You can get wrecks in Australia for scrap metal cost ($100-300 - These bikes sell for about $1500 new, so if anything major goes wrong, e.g. motor blows, the cost of labour to strip and rebuild isn't worth the cost to repair, so they are wrecked for next to nothing. That said, labour is much more expensive in Australia than the US, so the same might not apply.)