AC9999
10 mW
I just joined but have been a long time reader. Thank you to all the well know members who seem to give the best advice in almost every post I happen to be reading. I've learned a lot. Ok now the details. My first build.
2005 Specialized Hardrock Sport
48v 1000w Mxus V1 motor with matching KT controller (15a 30a max) and KT-LCD1 display all from Changzhou Hua Yu Xin Feng Motor Co., Ltd.
48v 20ah Li-NiCoMn 18650 Triangle pack from Shenzhen Lamye Technology Co., Ltd. (specs of pack below)
GT Power 130a Wattmeter
The problem I'm having is not getting close to 20mph unless also peddling with the wind at my back on flat ground. Then I get 20-22mph. I myself am 225 plus the bike. I know it's not a V3 with 72v but shouldn't I be able to get close to 30? This is what all my research on here told me. I thought I did good. (I know I should have started with a weak setup and then been schooled on how to do it right but I did a lot of reading and skipped that part.) The speed limiter is maxed out and all my P settings are correct besides P5. Some say at 48v it should be 15 others say LVC + P5 / 3.77 which is around 22. Confirmation on this would be appreciated.
I originally thought I got ripped off on my battery because a low ah 36v pack would explain the lack of speed and torque. (I know don't buy from China buy from well known proven members who will support the sale. Just wasn't in budget. I did get a good deal if actually legit) But fully charged it does read 54v and will run quite a while. I just got done with a 15+ mile ride using mainly the throttle and I'm only down to 46v. Slow speed though, average 15-17mph. The pack is supposed to be BYD cells but it had a manufacturers sticker from Shenzhen AODA New Energy Technology CO., LTD in the box. Lamye claims they use them to ship because they can't. A little fishy. So are these BYD, AODA or just cheap Chinese cells? ? I had them send a single extra cell to examine. Pic below of cell and of claimed specs of pack. If the pack is legit I need to retract my dispute with them through Alibaba.
My wattmeter may be faulty or the problems with it may be a result of the underlying issue(s). It only shows the top 2 readings until voltage drops below 46. Then the bottom will cycle the readings properly. It won't show anything with battery fully charged until motor starts and voltage drops a bit. Pics are below of readings from an in progress ride of 15-17mph. I believe motor is Ok but have not checked internal wires yet.
So...Are those numbers correct? Can someone explain what I should look for value wise? Is there not enough power being pulled? Bad controller? What could be my issue?
An advance thank you to all that chime in and give me some insight into this issue. Here are the images.
2005 Specialized Hardrock Sport
48v 1000w Mxus V1 motor with matching KT controller (15a 30a max) and KT-LCD1 display all from Changzhou Hua Yu Xin Feng Motor Co., Ltd.
48v 20ah Li-NiCoMn 18650 Triangle pack from Shenzhen Lamye Technology Co., Ltd. (specs of pack below)
GT Power 130a Wattmeter
The problem I'm having is not getting close to 20mph unless also peddling with the wind at my back on flat ground. Then I get 20-22mph. I myself am 225 plus the bike. I know it's not a V3 with 72v but shouldn't I be able to get close to 30? This is what all my research on here told me. I thought I did good. (I know I should have started with a weak setup and then been schooled on how to do it right but I did a lot of reading and skipped that part.) The speed limiter is maxed out and all my P settings are correct besides P5. Some say at 48v it should be 15 others say LVC + P5 / 3.77 which is around 22. Confirmation on this would be appreciated.
I originally thought I got ripped off on my battery because a low ah 36v pack would explain the lack of speed and torque. (I know don't buy from China buy from well known proven members who will support the sale. Just wasn't in budget. I did get a good deal if actually legit) But fully charged it does read 54v and will run quite a while. I just got done with a 15+ mile ride using mainly the throttle and I'm only down to 46v. Slow speed though, average 15-17mph. The pack is supposed to be BYD cells but it had a manufacturers sticker from Shenzhen AODA New Energy Technology CO., LTD in the box. Lamye claims they use them to ship because they can't. A little fishy. So are these BYD, AODA or just cheap Chinese cells? ? I had them send a single extra cell to examine. Pic below of cell and of claimed specs of pack. If the pack is legit I need to retract my dispute with them through Alibaba.
My wattmeter may be faulty or the problems with it may be a result of the underlying issue(s). It only shows the top 2 readings until voltage drops below 46. Then the bottom will cycle the readings properly. It won't show anything with battery fully charged until motor starts and voltage drops a bit. Pics are below of readings from an in progress ride of 15-17mph. I believe motor is Ok but have not checked internal wires yet.
So...Are those numbers correct? Can someone explain what I should look for value wise? Is there not enough power being pulled? Bad controller? What could be my issue?
An advance thank you to all that chime in and give me some insight into this issue. Here are the images.
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