I am building a powered wheelbarrow with a hub motor that I purchased from NuSun Inc. It was marketed as a utility cart or wheelbarrow kit.
I have a few questions about my set up and would appreciate any input at all.
For my project I need a low speed / high torque motor! The wheelbarrow will have to carry 2 to 3 hundred pounds of concrete through grass and rough terrain in wet and dry conditions.
The hub kit is a 48v/800 watt motor that came with a controller, twist throttle, battery charger and brake lever. All these components seem to be from an electric scooter or ebike. If the hub motor is the same, it would be to fast without gearing it down and not enough torque for my project. Would it in fact have been built or reconfigured for what it was advertised as??
My other questions are in regards to the best battery options and set up. The kit is suggesting to use 4-12volt gel cell packs in series, supplying 48volts of coarse. Could someone explain to me the basics of what and how the performance would change with different pack set ups, such as different voltages and amp hour batteries? How does changing the amp hours work?
Can I use 8ah,10ah,12ah,15ah or even higher? Can this motor and controller be run on only 2 -12v batteries at 24volts? What am I giving up by doing this...... run time,speed or torque? (sorry for my lack or basic knowledge on this).
Once again, I'm looking for low speed with high torque and like everyone else "decent run time".
Other questions are:
-Since this kit didn't come with a volt or amp gauge and I understand that these batteries should not be run below 20%, should I be incorporating some short of indicator to monitor the battery charge? Or is there another way of knowing when the batteries are getting low?
-Can this hub motor be switched from forward to reverse? If so, from where.....between the battery to the controller or from the controller to the motor? Do these controllers require a certain polarity coming into them?? Because it would be easier for me to reverse the polarity from the battery to the controller as apposed to doing it between the controller and the motor as the motor has 3 power leads from it!
Sorry for all the questions and thank you in advance for any help.