MidTNJasonF
10 mW
I am a nuts and bolts sort of guy. I can cut it, mill it, turn it, and weld it but electrical theory and calculation is relatively new to me. While I am fairly competent with a standard 12v electrical auto/moto system I lack knowledge in the higher voltage and amperage systems of an EV are a bit beyond me, especially when understanding system component needs/capacity.
With all that said I have fairly well defined goals and a few things already decided. In fact a few parts for my conversion are starting to trickle in.
Goals:
40 mile range (shooting for 50 with a margin of error for real world of 40)
Top speed of 60mph (again real world need is maintaining 45 with peaks up to 55)
I would like to do this with a 72v DC based system if I can since that seems to be a sweet spot for component availability and pricing without getting into higher powered car focused components.
My commute is 11 miles of curvy backroads with 35 to 45 mph speed limits and a few hills but nothing major. Realistically I could get away with a 25~30 mile range but I would like to be able to run an errand or two at lunch/afterwork if the need arises which would add another 10 miles or so in town.
I am going to make a restomod vintage electric motorcycle using components of one of my 1972 Honda CB 450 motorcycles. I may rob some components off one of my CB 350's as well since I have so many spares. The frame is beefy and steel so it should support a motor and battery pack well and be easy to weld, cut, or drill.
I am using a 10 Nissan Leaf battery modules in a 4.4kwh pack. I have read several build threads utilizing them and looked at the specs. They seem like an incredibly cost effective and well engineered solution for a setup like this. The only downside I see is since they are 2s2p in the aluminum case at 7.4v nominal/60ah a BMS solution will not be as cut and paste as some other solutions. I do not see an easy way to monitor each cell in the pack, only the module itself.
What I need help with is motor and controller selection.
I plan on using a mid mount DC motor driving a traditional chain and sprocket setup. I wanted to use Mark's hub motor to free up frame area for other components but honestly the cost is not in the budget for this build.
I am seriously considering the Agni 95R. I can get one at a pretty nice price and it looks to have the specs. I noticed this is a popular motor for racing applications but usually in pairs for high speed capability.
Is there anything undesirable about this motor in a single motor application that would limit me from using it?
Alternately I have looked at the Motenergy ME1003 from someone like EV Drives. Also cost effective and seems to have the specs on paper.
Also in consideration is the Motenergy ME4201 Brushless DC PM. Again it looks cost effective on paper but would probably require a bit more controller.
For Controllers I am considering the
Alltrax SPM-72400, the Kelly KDZ72401, or maybe even a Curtis 1221M-6701 or 1205M-6402.
The Curtis has the disadvantage or extra cost of needing a programmer or software and adapter cable. The Alltrax and Kelly seem to have less cost involved in the hardware and software for programming.
What I do not know is what peak and continuous amperage ratings I need to target for my setup. That would determine, in part, how much controller I need. If I could get by with 200a or 300a peak I could step down a bit in controller capacity but my reading seems to indicate that I would be better served in the 400a to 500a range.
Anyone have specific input on those particular controllers and motors or good alternatives to them that are economical?
With all that said I have fairly well defined goals and a few things already decided. In fact a few parts for my conversion are starting to trickle in.
Goals:
40 mile range (shooting for 50 with a margin of error for real world of 40)
Top speed of 60mph (again real world need is maintaining 45 with peaks up to 55)
I would like to do this with a 72v DC based system if I can since that seems to be a sweet spot for component availability and pricing without getting into higher powered car focused components.
My commute is 11 miles of curvy backroads with 35 to 45 mph speed limits and a few hills but nothing major. Realistically I could get away with a 25~30 mile range but I would like to be able to run an errand or two at lunch/afterwork if the need arises which would add another 10 miles or so in town.
I am going to make a restomod vintage electric motorcycle using components of one of my 1972 Honda CB 450 motorcycles. I may rob some components off one of my CB 350's as well since I have so many spares. The frame is beefy and steel so it should support a motor and battery pack well and be easy to weld, cut, or drill.
I am using a 10 Nissan Leaf battery modules in a 4.4kwh pack. I have read several build threads utilizing them and looked at the specs. They seem like an incredibly cost effective and well engineered solution for a setup like this. The only downside I see is since they are 2s2p in the aluminum case at 7.4v nominal/60ah a BMS solution will not be as cut and paste as some other solutions. I do not see an easy way to monitor each cell in the pack, only the module itself.
What I need help with is motor and controller selection.
I plan on using a mid mount DC motor driving a traditional chain and sprocket setup. I wanted to use Mark's hub motor to free up frame area for other components but honestly the cost is not in the budget for this build.
I am seriously considering the Agni 95R. I can get one at a pretty nice price and it looks to have the specs. I noticed this is a popular motor for racing applications but usually in pairs for high speed capability.
Is there anything undesirable about this motor in a single motor application that would limit me from using it?
Alternately I have looked at the Motenergy ME1003 from someone like EV Drives. Also cost effective and seems to have the specs on paper.
Also in consideration is the Motenergy ME4201 Brushless DC PM. Again it looks cost effective on paper but would probably require a bit more controller.
For Controllers I am considering the
Alltrax SPM-72400, the Kelly KDZ72401, or maybe even a Curtis 1221M-6701 or 1205M-6402.
The Curtis has the disadvantage or extra cost of needing a programmer or software and adapter cable. The Alltrax and Kelly seem to have less cost involved in the hardware and software for programming.
What I do not know is what peak and continuous amperage ratings I need to target for my setup. That would determine, in part, how much controller I need. If I could get by with 200a or 300a peak I could step down a bit in controller capacity but my reading seems to indicate that I would be better served in the 400a to 500a range.
Anyone have specific input on those particular controllers and motors or good alternatives to them that are economical?