Will a 50A BMC controller work with a direct drive hub?

[ChaseUK]

Hi,
Purchased a 2nd hand pedelec yesterday, it has a BMC V4 (cruiser) geared hub with a BMC 50A controller and 10Ah 58.8V Lipo battery pack. It is very very cool!! Loads of torque and quiet - but tops out at 34 mph. I think a may want to go a little faster - something like 40-45 MPH.
So was considering changing the BMC V4 for either a speed version, or hopefully a direct drive hub (probably a crystralyte). Does anyone know if I'll need to change the controller? I thought I read somewhere the BMC controller will only work with BMC motors... but can't find that thread now.

 

[mike killay]

What you need is a 24 volt, 1200 watt Minnkota trolling motor.
Sorry, I was thinking of electric boats.

 

[VictoryV]

What you need is a 24 volt, 1200 watt Minnkota trolling motor.
Sorry, I was thinking of electric boats.

Or the three "billy goats gruff" to overcome the troll

 

[selrahc1992]

Hi,
Purchased a 2nd hand pedelec yesterday, it has a BMC V4 (cruiser) geared hub with a BMC 50A controller and 10Ah 58.8V Lipo battery pack. It is very very cool!! Loads of torque and quiet - but tops out at 34 mph. I think a may want to go a little faster - something like 40-45 MPH.
So was considering changing the BMC V4 for either a speed version, or hopefully a direct drive hub (probably a crystralyte). Does anyone know if I'll need to change the controller? I thought I read somewhere the BMC controller will only work with BMC motors... but can't find that thread now.

i think that's about 3kw? here's a thought - i run a bpm 500w with a few hobbyking lipos (12S, 44V) and a 45 A sine wave controller (S12SH from BMS battery) - on the LCD3 it frequently says something like 2560W so either the LCD or the controller is fibbing or not to spec. it never overheats - BUT, it's in a 20 wheel and tops out around 23mph, an i weight 65ish kg (so not exactly a huge burden). But its also completely as bought (no oil cooling or any mods). Why not get a BPM 500W? It hums (a bit like a quiet milk float), but frankly, i love it. It's also very cheap, and you could add oil cooling if it overheats?

 

[selrahc1992]

i think that's about 3kw? here's a thought - i run a bpm 500w with a few hobbyking lipos (12S, 44V) and a 45 A sine wave controller (S12SH from BMS battery) - on the LCD3 it frequently says something like 2560W so either the LCD or the controller is fibbing or not to spec. it never overheats - BUT, it's in a 20 wheel and tops out around 23mph, an i weight 65ish kg (so not exactly a huge burden). But its also completely as bought (no oil cooling or any mods). Why not get a BPM 500W? It hums (a bit like a quiet milk float), but frankly, i love it. It's also very cheap, and you could add oil cooling if it overheats?

forgot to add, off course you'd get a different RPM version (i think there is one faster one than this) and put it in a bigger wheel, and at 60V, so loads of speed