tymotors
1 mW
Hello everyone,
I have been thinking about building a 2 seater (inline seating to reduce frontal area) velomobile style tadpole trike, but with a massive hub motor to hit highway speeds with ease for extended periods. I estimate that it will weigh about 700lbs with 2 people in it. Target power is ~30kw, with 15kwh of 24s LFP cells. I plan on building the frame and fairing from scratch since velomobiles are very expensive, and I have considerably more time than money right now. This will strictly be a road vehicle.
So with the basics out of the way, here are some of the specifics I have been mulling over for quite some time now:
I would like to use a 13 inch qs 273 motor to get the magnets as close as possible to the road for efficiency and power benefits (best mechanical advantage). It seems like an appropriate choice since the motor will only be pushed on steep uphills and quick acceleration, for cruising it will be very under stressed due to the excellent aerodynamic efficiency of the planned vehicle. From playing around in the motor simulator, it seems that the motor will be more than capable of climbing 30% grades at decent speeds if given enough juice. For now, I am ok with this not being a performance vehicle, but I do need it to climb hills without overheating.
This brings me to my questions for you all:
For those of you with experience dealing with QS, will I be able to get a motor with a KV of about 25-27? This is required for my speed requirements (65-70 mph up a 6% grade). I am not opposed to winding a motor myself, but avoiding that would be nice.
I have looked at getting an ASI BAC 8000 to be able to pump enough phase current through such a fast wound motor, however in light of Nucular releasing their new 24F controller, it seems that 500 phase amps will do according to the motor simulator. I would love to hear your experiences with both controllers. I am leaning towards the 24F since it is so much cheaper (ASI keeps raising the price of their eval kits). I am fairly opposed to any Chinese power electronics in this build since I have had bad experiences with them in the past, but I could be convinced otherwise. My requirements for a controller are programmable FOC with variable regen braking.
I haven't even started thinking about suspension and whatnot, but I will definitely need advice for that as well.
Budget is around 10k US.
Thank you in advance for your help
I have been thinking about building a 2 seater (inline seating to reduce frontal area) velomobile style tadpole trike, but with a massive hub motor to hit highway speeds with ease for extended periods. I estimate that it will weigh about 700lbs with 2 people in it. Target power is ~30kw, with 15kwh of 24s LFP cells. I plan on building the frame and fairing from scratch since velomobiles are very expensive, and I have considerably more time than money right now. This will strictly be a road vehicle.
So with the basics out of the way, here are some of the specifics I have been mulling over for quite some time now:
I would like to use a 13 inch qs 273 motor to get the magnets as close as possible to the road for efficiency and power benefits (best mechanical advantage). It seems like an appropriate choice since the motor will only be pushed on steep uphills and quick acceleration, for cruising it will be very under stressed due to the excellent aerodynamic efficiency of the planned vehicle. From playing around in the motor simulator, it seems that the motor will be more than capable of climbing 30% grades at decent speeds if given enough juice. For now, I am ok with this not being a performance vehicle, but I do need it to climb hills without overheating.
This brings me to my questions for you all:
For those of you with experience dealing with QS, will I be able to get a motor with a KV of about 25-27? This is required for my speed requirements (65-70 mph up a 6% grade). I am not opposed to winding a motor myself, but avoiding that would be nice.
I have looked at getting an ASI BAC 8000 to be able to pump enough phase current through such a fast wound motor, however in light of Nucular releasing their new 24F controller, it seems that 500 phase amps will do according to the motor simulator. I would love to hear your experiences with both controllers. I am leaning towards the 24F since it is so much cheaper (ASI keeps raising the price of their eval kits). I am fairly opposed to any Chinese power electronics in this build since I have had bad experiences with them in the past, but I could be convinced otherwise. My requirements for a controller are programmable FOC with variable regen braking.
I haven't even started thinking about suspension and whatnot, but I will definitely need advice for that as well.
Budget is around 10k US.
Thank you in advance for your help