Search results

  1. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    As my motor were overheating, I couldn't find other way to improve the issue than use a dual motor -- as I had a used second motor in stock (with 30% less torque and 30% higher KV), I installed on the front wheel. I also had in stock a 135mm distance between dropouts fork for Fiido Q1S, exactly...
  2. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    I decided to install a second throttle specifically to control the brake / regen. I installed it on the left side, but I installed a throttle that was made to install on the right side, so on the left side I need to move it forward while the throttle on the right I need to move it backward...
  3. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    As my motor is heating a lot (at least much more than what I expected, but I may be wrong), I improved the firmware, to keep the highest motor current (135 amps - 0 kms/h speed) at start and then reduce it linearly up to 40 amps and keep that value afterwards (40 amps - after 30 kms/h). I also...
  4. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    I am limiting the motor phase current to 135 amps and I see the motor getting hot relatively quick. The seller told me this is a 2000W motor and the max motor phase current should be 80A. Today I tested the motor for the first time using the VESC foc_openloop 80 1000, that rotates the motor at...
  5. casainho

    Fiido Q1S Upgrade; 200A, VESC, Copper-Nickel 52v Molicel

    Hi. I need probably to go with the dual motor setup and I was looking at that split rim motors - thanks for sharing all this details!! Did you increase the currents? if so, what are the ones you are using now? and you configure VESC to use the same phase current as the battery current? I...
  6. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    I found and confirmed with the seller, that my motor is in fact the 5000W version and not the 2000W version I bought!! But since I asked for a custom winding to have more torque and lower speed, she is saying if I buy another motor but this time for 72V, it will have more torque. However, I...
  7. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    I didn't use this scooter / motor in rain... but, I live near the ocean and there is a lot of humidity!!!
  8. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    Yes, I keep the same current, because I needed more torque comparing to previous motor. I was not aware of the resistance increase. A search on google: Does temperature cause rust? An increase in temperature contributes to an increase in the number of active centers of corrosion on the metal...
  9. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    It is a 12 inches motor. The motor dropouts internal distance is 125mm. The tires can be like 12x3.00 or 12x3.50. I need to look at that QS motors. For now I am looking at this ones - because they have 40 magnets and mine have 30, so I expect 33% more torque(??). And it is a rim split, meaning...
  10. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    About the motor, if I can find one that is more powerful, with more torque and more power, so I can use on hills... or maybe go with dual motors...
  11. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    I have a new issue to solve... I am trying to do longer rides, and sometimes even on more hilly terrain, but the motor heats a lot and stops to work. The next pictures shows the Fiido Q1S on a train, on a nice early morning sunny Sunday, where I went to a distant place by train and then I did...
  12. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    So yesterday I had to leave the car at the mechanic workshop for a week - the distance from my home is 25kms. So I decided to put the Fiido Q1S on the car and I returned home riding it. And I did easy secondary roads as also some gravel roads - this are places where I grow up. Was a nice sunny...
  13. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    Sine I remember, yes. I did connect to the battery power without disabling the BMS switch.
  14. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    Front suspension is the original. The rear shock I changed to this one: I don't have experience on the gravel paths but I would can say clearly that both that front and rear suspensions are important for the comfort on the road potholes!! In the rear I have now installed a 3.00x8 tire. On...
  15. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    Recently the Fiido Q1S stopped to work while I was riding in the city. After checking the battery cells voltage with the BMS app, I could understand that cells parallel nr 11 were almost empty while others didn't -- this is because I used old re-used and different cells: Now I am building a...
  16. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    But this VESC Makerbase 75100 V2 had the same issue as V1, the motor makes noise at startup, lack of some torque and the motor detection on VESC tool was bad. Then I went and changed the latest VESC firmware with the previous changes for average the currents, that did me a perfect result before...
  17. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    A lot of things going on recently!! So I bought a new Lunyee motor, but this time with lower RPM and more torque!! and the trade went perfectly did time!! Amy Ding sold me the motor and we did agree on the RPM - then he sent me a video showing it running and the battery voltage and RPM in real...
  18. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    I bought this front light from Aliexpress and it were a bigger improvement over the original Fiido Q1S front light. This light uses 20W of electric power while the orignal Fiido Q1S only used 1W!! But I was not happy yet, for the speeds I ride at night and sometimes in places with total...
  19. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    I would like to give an update on how the Michelin S83 3.5-8 48J tires are looking on my Fiido Q1S and why I decided to remove them and go back to the 3.0-8 tires. My Fiido Q1S with Michelin S83 3.5-8 48J tires: Detail showing how tight the tire fits on the rear: And as I already...
  20. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    My rear tire did wear out quickly, maybe because my motor brakes a lot (I almost do not use the mechanical brakes) and/or because the tire is thin: So I was looking for a thicker tire, as it is difficult to change this rear tire - change the tire it self is not easy, but also because of the 6...
  21. casainho

    Bafang M500/M600 thread

    "Open Brain Surgery For EBikes And EScooters" is how HackADay news site see this OpenSource solution of DIY electronics and firmware for EBikes and EScooters. The project was also featured in this week's CircuitPython newsletter. "Personal Electric Vehicles (PEVs) all contain the same basic set...
  22. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    "Open Brain Surgery For EBikes And EScooters" is how HackADay news site see this OpenSource solution of DIY electronics and firmware for EBikes and EScooters. The project was also featured in this week's CircuitPython newsletter. "Personal Electric Vehicles (PEVs) all contain the same basic set...
  23. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    Good news!! 1. I flashed the firmware that improves the motor current on this cheap bad quality VESC (thanks @IsaacLarsen to point this forum message here) and now the motor is much more silent, like a 100x improvement!!! The VESC motor auto-detection is almost perfect, but still seems the...
  24. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    That is great!! thanks. I bought the most cheap VESC of 200A on Aliexpress, so I understand why I have motor noise at startup as also a bit low torque, both are things that I would be happy to improve - and that message have 2 important changes I can do to improve a lot this issues.
  25. casainho

    Fiido Q1S 5kW dual motor: VESC + modular DIY OpenSource electronics and software

    That is a very good idea. However, I will only focus on developing what I use and my TODO list is the same as previous. I am also building the front lights board, then finally I will try to install most of possible the electronics on the seat tube. And then build the final battery as small as...
Back
Top