rosselboss
1 µW
- Joined
- Feb 9, 2016
- Messages
- 1
As the subject states I'm having a little bit of trouble choosing a Brushless Dc outrunner motor for a university engineering design project.
A little background on the project, we be are building a universal electric bike attachment. The purpose being able to install/uninstall the whole attachment in a few minutes.
It will attach of the seat post and the brushless motors (2 of them ) will be used as friction rollers to propel the rider forward by pinching the back tire. This will act as a assist to pedaling and not the sole power delivery system.
Our biggest hurdle right now is cost, we have a budget of $600 total for the build. Initially we were going the route of using (x4) 5s batteries hooked up -2 batteries each in series- then each of those pairs hooked in parallel to give us the desired voltage and current necessary for our estimated ride time of 1/2 hour at approx 15-18mph.
However finding a motor to handle this high current has been tough. Motors at these specs seem to cost approx $100 a piece.
So to get to the point of this thread should my team and I keep looking in this 5s battery/motor range or decrease both size of the motors and batteries to possibly 3/4s? I do realize this would save a ton of money on the project however the range and max speed will be significantly decreased.
If you have anymore detailed questions dont hesitate to ask
Thanks for any advice in advance
~Rosselboss
A little background on the project, we be are building a universal electric bike attachment. The purpose being able to install/uninstall the whole attachment in a few minutes.
It will attach of the seat post and the brushless motors (2 of them ) will be used as friction rollers to propel the rider forward by pinching the back tire. This will act as a assist to pedaling and not the sole power delivery system.
Our biggest hurdle right now is cost, we have a budget of $600 total for the build. Initially we were going the route of using (x4) 5s batteries hooked up -2 batteries each in series- then each of those pairs hooked in parallel to give us the desired voltage and current necessary for our estimated ride time of 1/2 hour at approx 15-18mph.
However finding a motor to handle this high current has been tough. Motors at these specs seem to cost approx $100 a piece.
So to get to the point of this thread should my team and I keep looking in this 5s battery/motor range or decrease both size of the motors and batteries to possibly 3/4s? I do realize this would save a ton of money on the project however the range and max speed will be significantly decreased.
If you have anymore detailed questions dont hesitate to ask
Thanks for any advice in advance
~Rosselboss
