wallypedal
100 mW
I've asked for and received great advice on here concerning the e-bike front end attachment for my son's outdoor wheelchair. It has been an on-again, off-again process of lots of frustration and learning, with intermittent short term successes. This started over 7 years ago!
The original configuration was with a no name gear motor, 36 volt, who knows the wattage setup, with a cheap battery and controller, also no-name. We have since purchased two different LiFePo4 batteries, two controllers, and a 500 watt brushless motor. They were simply not up to the conditions and needs, and we have determined that we like the basic concept, but need to replace all the componentry. That is what we are asking for advice and suggestions on now, in terms of equipment and suppliers.
The basic configuration wish list:
20" wheel set up for disc brakes, and the disc brake itself.
Although we have been running 36V to date, we aren't insisting on that. Ideally though, the battery needs to fit and be easily removed from the space between the front of the handle bars and tube down over the front tire. The present aluminum case one fits on a rack there. The battery weight on the front helps traction.
The BEST motor for high torque and reliable cool running at very low speed, but high load as on steep grades with rocks, ruts, and rolling resistance. That means from creep speed without overheating or dropping out due to amp or voltage limits up to a couple mph on very steep upgrades. Top end is not important. We know that almost anything will get up to 15 mph or so. That's plenty. It appears BMC may be higher quality and better supported than Mac, but that is only based on web info. I cannot tell from motor specs what the true comparison and capability is for these motors. "High torque" doesn't compare to "20T" very well. What is the mechanical gear ratio and the recommended motor r.p.m. for continual operation? Again, I can't tell from the web site specs.
MATCHED controller (Infineon programmable?) with Cycle Analyst.
Reversing is nice, but it looks like no gear motor setup will do that. I keep saying gear motor, because am not aware of any DD motors that will perform in these conditions. There may be some we haven't discovered.
The BEST battery/BMS setup matched to the motor and controller chosen.
A charger also set up to match up with that battery/bms.
A matching steel shock fork that will fit our present frame, with appropriate dropouts and strength for the motor. We would like to have options on rake angle.
Ideally, we would like to have all these components as a package from one vendor. They should be warranted if at all possible. The vendor should be ready to support the owner(my son) quickly and thoroughly if ANY problems arise. He doesn't want to rely on ol' Dad to be his mechanic and electrician, and I don't want to be either. Our time together outdoors is much too valuable to be spent maintaining garbage equipment.
If this isn't the appropriate sub forum for this topic, we'll be glad to move it or have it moved. You guys have been the best in helping us so far. Thanks!
Wallypedal
The original configuration was with a no name gear motor, 36 volt, who knows the wattage setup, with a cheap battery and controller, also no-name. We have since purchased two different LiFePo4 batteries, two controllers, and a 500 watt brushless motor. They were simply not up to the conditions and needs, and we have determined that we like the basic concept, but need to replace all the componentry. That is what we are asking for advice and suggestions on now, in terms of equipment and suppliers.
The basic configuration wish list:
20" wheel set up for disc brakes, and the disc brake itself.
Although we have been running 36V to date, we aren't insisting on that. Ideally though, the battery needs to fit and be easily removed from the space between the front of the handle bars and tube down over the front tire. The present aluminum case one fits on a rack there. The battery weight on the front helps traction.
The BEST motor for high torque and reliable cool running at very low speed, but high load as on steep grades with rocks, ruts, and rolling resistance. That means from creep speed without overheating or dropping out due to amp or voltage limits up to a couple mph on very steep upgrades. Top end is not important. We know that almost anything will get up to 15 mph or so. That's plenty. It appears BMC may be higher quality and better supported than Mac, but that is only based on web info. I cannot tell from motor specs what the true comparison and capability is for these motors. "High torque" doesn't compare to "20T" very well. What is the mechanical gear ratio and the recommended motor r.p.m. for continual operation? Again, I can't tell from the web site specs.
MATCHED controller (Infineon programmable?) with Cycle Analyst.
Reversing is nice, but it looks like no gear motor setup will do that. I keep saying gear motor, because am not aware of any DD motors that will perform in these conditions. There may be some we haven't discovered.
The BEST battery/BMS setup matched to the motor and controller chosen.
A charger also set up to match up with that battery/bms.
A matching steel shock fork that will fit our present frame, with appropriate dropouts and strength for the motor. We would like to have options on rake angle.
Ideally, we would like to have all these components as a package from one vendor. They should be warranted if at all possible. The vendor should be ready to support the owner(my son) quickly and thoroughly if ANY problems arise. He doesn't want to rely on ol' Dad to be his mechanic and electrician, and I don't want to be either. Our time together outdoors is much too valuable to be spent maintaining garbage equipment.
If this isn't the appropriate sub forum for this topic, we'll be glad to move it or have it moved. You guys have been the best in helping us so far. Thanks!
Wallypedal