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  1. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    Latest KiCad files are on github. Hope this helps. https://github.com/galpavlin/BESC-G2
  2. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    Hey! Max voltage is going to be 24S or ~100V. Currents up to 350A should be no issue with water cooling but you'll need some high performance thermal interface materials to connect fets to water block. It's not the easiest task but is certainly doable. You probably won't run into pcb...
  3. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    I'll also post this here for visibility. Version v1.1 is now up on my website. It has that stupid inverter removed and silkscreen fixed. Anyone ordering the PCBs should use the v1.1 gerbers. http://pavlin.si/besc/besc-g2/
  4. galp

    BESC - beefed up VESC motor controller for high power ebikes

    Version v1.1 is now up on my website. It has that stupid inverter removed and silkscreen fixed. Anyone ordering the PCBs should use the v1.1 gerbers. http://pavlin.si/besc/besc-g2/
  5. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    Check your duty cycle. If it's near 95% this means the motor cant spin any faster and that's the reason it is not drawing more current. If not there must be something throttling the current. Check what motor temperature you get Check what mosfet temperature you get Check your battery voltage...
  6. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    Hey! You can hardcode default parameters in firmware by changing appconf_default.h in appconf folder and mcconf_default.h in mcconf folder. If you save motor and app configuration xml from the tool you can just copy the parameters from there. However I think it would be a lot easier to try...
  7. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    24S should be okay but I wouldn't go much higher. If you find different capacitors and mosfets you can go up to ~28S but with reduced current.
  8. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    Read about HW bugs here: http://pavlin.si/besc/besc-g2/
  9. galp

    10 kW Giant Glory 1

    No, this happened when starting up from standstill.
  10. galp

    10 kW Giant Glory 1

    So today I was trying to run 370A through my poor motor and this happened. BESC-G2 is now tested up to 370A without issues. Well, except for the axle. :mrgreen:
  11. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    Hit the anchor icon in vesc tool and try to spin the motor. If there's consistence resistance then everything should be ok. If it cogs or there's no resistance power stage is not switching properly. Measure gate-source signal on mosfets while anchor icon is activated.. Maybe there's bad soldering.
  12. galp

    BESC - beefed up VESC motor controller for high power ebikes

    Did not test those features. They still seem to be in somewhat beta phase but should in theory work. I also pushed the besc-g2 to 350A phase without issues in the last few days. Version 3 actually became version 4. Check it out here. https://endless-sphere.com/forums/viewtopic.php?f=30&t=110252
  13. galp

    BESC-G4

    The new BESC format is here. I started designing G3 but later scrapped it and went straight to G4. This version will be capable of even more serious current and higher voltage. At first glance: 12x IXTN400N15X4 in SOT-227 housing 700A phase current 30S capable 90 mm^2 phase busbars, 60 mm^2...
  14. galp

    building the BESC - 100V, 400A motor controller [NOT RECOMMENDED]

    Hey! I compiled latest vesc code for BESC-G2 and tested it with hall sensors. Download it from the link bellow. You can also find updated HW config files for vesc code in the attachment. http://pavlin.si/besc/besc-g2/
  15. galp

    BESC - beefed up VESC motor controller for high power ebikes

    Hey! Here's an update from me. I've compiled and tested latest firmware for BESC-G2. It is available on my webpage or clicking on the link bellow. http://pavlin.si/besc/wp-content/uploads/2021/02/BESC_G2_FW.zip
  16. galp

    BESC - beefed up VESC motor controller for high power ebikes

    You are correct.
  17. galp

    BESC - beefed up VESC motor controller for high power ebikes

    MQYNLKpVmGU
  18. galp

    BESC - beefed up VESC motor controller for high power ebikes

    Hello everyone! Controller is now extensively tested with more than 2000 km on my 15kW Giant Glory. I have decided it is ready for general DIY-ers and started writting a blog page with details how to build the controller yourself. http://pavlin.si/besc/besc-g2/ The controller has be runing...
  19. galp

    10 kW Giant Glory 1

    Here are step files and 3D pdf. You need adobe acrobat reader to open it properly. Hope this helps.
  20. galp

    10 kW Giant Glory 1

    I took a few thermal photos of my bike today after a ride in cold weather. Motor, motor wire and air shock absorber generate the most heat as expected. Sadly you can't see electronics because it is enclosed. Bike throttles itself after about 10 minutes of riding. I still have to install...
  21. galp

    BESC - beefed up VESC motor controller for high power ebikes

    I had to invert shunt polarity and gate disable/enable. I also had few bugs in HW due to bad soldering.
  22. galp

    BESC - beefed up VESC motor controller for high power ebikes

    After a few problems with software and few burnt fets the controller finally works. I tested it @300A phase current and it works flawlessly. My ebike now pops wheelies at any speed. I'm sooo happy! :mrgreen: :mrgreen: Ialso designed and 3d printed an enclosure to fit the controller in my...
  23. galp

    10 kW Giant Glory 1

    I decided to get rid of bike rim and tire. One of the main issues is that even the strongest bike rim is not strong enough and that bike tires are not build for this kind of torque. I had to replace tires every 300 km or so which was getting expensive. I did some research and found a way to get...
  24. galp

    BESC - beefed up VESC motor controller for high power ebikes

    Cool, thanks shaman!
  25. galp

    BESC - beefed up VESC motor controller for high power ebikes

    The amp gain setting. I think this is the way to do it but I'll ask someone to be sure.
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