rrrccc01
1 µW
- Joined
- Oct 25, 2018
- Messages
- 3
Greetings,
Newbee here, apologies for ignorance in advance! Warning this is verbose!
I bought an eBike on Amazon, enjoyed it a lot, started making mods to make it better/more to my liking, then decided rather than mod it I should build my own. So…
I bought a bike for $40 at a garage/boot sale, a Trek 820, and a kit on Amazon. Here’s a link to the kit I bought
https://www.amazon.com/gp/product/B079T25XCN/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
I should say that I am reasonably technically competent; I have worked over 30 years in IT and have even written assembler code; I know what a bit, byte and complier is/are. However, my expertise is not in electrical or control systems, but I can find my way around bits and bytes. So…
The kit comes with a rear wheel motor, a “SW900” LCD, a brushless controller, brake levers, PAS sensor and various other whatnots. I ran into some bumps along the way, now have it put it all together and set up.
Now comes a challenge; during my test rides I’ve decided that PAS-1 goes too fast, say 14 MPH on flat terrain, and I am looking for a way to reduce the speed of PAS-1, say 8 MPH. I figure there is some setting in the controller that says how much power the controller sends to the motor for a particular PAS setting to control the speed.
Then I start to do research and determine:
1. The LCD (SW900) is primarily an interface to the controller, that is, the LCD displays status and accepts input which it sends to the controller, e.g. MPH or KPH, wheels diameter, etc. Also, there is more than one LCD available, the most common being the KT LCD 3/5 LCD the SW900.
2. The controller governs/controls how much power is sent to the motor. Again, there is more than one controller available.
3. Motors either have brushes or not, that is brushless, and the controller must match this Brush/Brushless
4. “I think” LCDs and controllers have to be compatible with each other, i.e., a KT-LCD5 and SW900 LCD will not work with the same controller
Then I find this forum/site and discover others have been down this road before me. There appears to be an application to change the controller settings but it appears to be for “KT” compatible controllers and I think my controller is a SW900 compatible controller. There’s probably a more accurate name for the controller type but I haven’t figured that out.
So finally, here are my questions…
1. Is what I want to do possible? Just change the PAS-1 setting to less power/slower speed.
2. What kind of controller do I have? Is there a “name” for it? Is it just called a SW900 compatible controller?
3. Can someone point me to the application software used to change this setting?
Thanks in advance
RC
Newbee here, apologies for ignorance in advance! Warning this is verbose!
I bought an eBike on Amazon, enjoyed it a lot, started making mods to make it better/more to my liking, then decided rather than mod it I should build my own. So…
I bought a bike for $40 at a garage/boot sale, a Trek 820, and a kit on Amazon. Here’s a link to the kit I bought
https://www.amazon.com/gp/product/B079T25XCN/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
I should say that I am reasonably technically competent; I have worked over 30 years in IT and have even written assembler code; I know what a bit, byte and complier is/are. However, my expertise is not in electrical or control systems, but I can find my way around bits and bytes. So…
The kit comes with a rear wheel motor, a “SW900” LCD, a brushless controller, brake levers, PAS sensor and various other whatnots. I ran into some bumps along the way, now have it put it all together and set up.
Now comes a challenge; during my test rides I’ve decided that PAS-1 goes too fast, say 14 MPH on flat terrain, and I am looking for a way to reduce the speed of PAS-1, say 8 MPH. I figure there is some setting in the controller that says how much power the controller sends to the motor for a particular PAS setting to control the speed.
Then I start to do research and determine:
1. The LCD (SW900) is primarily an interface to the controller, that is, the LCD displays status and accepts input which it sends to the controller, e.g. MPH or KPH, wheels diameter, etc. Also, there is more than one LCD available, the most common being the KT LCD 3/5 LCD the SW900.
2. The controller governs/controls how much power is sent to the motor. Again, there is more than one controller available.
3. Motors either have brushes or not, that is brushless, and the controller must match this Brush/Brushless
4. “I think” LCDs and controllers have to be compatible with each other, i.e., a KT-LCD5 and SW900 LCD will not work with the same controller
Then I find this forum/site and discover others have been down this road before me. There appears to be an application to change the controller settings but it appears to be for “KT” compatible controllers and I think my controller is a SW900 compatible controller. There’s probably a more accurate name for the controller type but I haven’t figured that out.
So finally, here are my questions…
1. Is what I want to do possible? Just change the PAS-1 setting to less power/slower speed.
2. What kind of controller do I have? Is there a “name” for it? Is it just called a SW900 compatible controller?
3. Can someone point me to the application software used to change this setting?
Thanks in advance
RC