Search results

Date Relevance Most replies

  1. dotrick

    A TC100 Project!

    Yes, I did some tests but the measures were difficults. With a camera it's a good idea but I don't have good stuff to do that. I think i will do that with the CA output. I will use this excel file to measure drag coefficient ...
  2. dotrick

    A TC100 Project!

    :( I have a new setup. A 18FET from LYEN. I did a test at 90A (Ibat) and 270A(Iphase). My battery 24s3P was full at 99V. The new top speed is 99kph, it's good! :D
  3. dotrick

    A TC100 Project!

    Two flats last week with my "Swalbe crazy bob"! :? I had 3 flats tyre in 2000km. The same thing each time, a small wire of steel, like a staple. The Kenda Kraze looks good for me... I will try!
  4. dotrick

    18FET LYEN - Problem to upload new parameters - Solved

    Ok, good! :)
  5. dotrick

    XPD: open-source keywin e-bike lab replacement

    OK, solved! :D http://endless-sphere.com/forums/viewtopic.php?f=2&t=61961 Thank you!
  6. dotrick

    18FET LYEN - Problem to upload new parameters - Solved

    Hello, I bought a 18FET LYEN Controller but the max current was 45A instead of 65A. I use the CA V3, the 18 FET Lyen - EB318 -AS-3, the TC100 Crown motor. The throttle is connected to the CA. See below CA measures and configurations I already asked some questions in this thread ...
  7. dotrick

    XPD: open-source keywin e-bike lab replacement

    I tried EB218 and EB318... No response with Xpd Software. I took a look with my scope. The baudrate change, It's not a problem of the XPD software. I will create a new post because I think i's not a problem of XPD. I resolve my problem errno14 : I replace the folder xpd-3.3.0 by xpd. Now, I...
  8. dotrick

    XPD: open-source keywin e-bike lab replacement

    Thank you NeilP :wink: Yes, I disconnected my conroller from battery. No, I have the CA, no switch. EB2xx and EB3xx... that is the question :D How can you recognize them? I read the first page of this thread, EB2xx baudrate 9600, EB3xx baudrate 38400. Ok, but i'm not sure of my cable and my...
  9. dotrick

    XPD: open-source keywin e-bike lab replacement

    Hello, I'm trying to use XPD... 1 : I don't know the reference of my 18 FET controller. I bought it few weeks ago.The reference is 184110ST -MII - LYEN Edition. 2 : I can't save a new configuration : Failed to save profile, Errno 13 Permission denied... I have the admin rights... 3 : I'm not...
  10. dotrick

    A TC100 Project!

    News! :D I would like to know the torque of my TC100 motor but I have some doubts about the torque of the datasheet... :roll: I don't have a torque meter, I did some tests to measure acceleration and after I can estimate the torque of my motor. Three tests, 0-50kph and about 7.0s - 7.5s. I...
  11. dotrick

    axial flux motor question !!

    :shock: It's not a toy? a real helicopter???
  12. dotrick

    axial flux motor question !!

    It's more difficult than I thought! :? Example for a Slot area of 10mm x 10mm : Wire diameter : 1.414mm / 2mm Nb wires / slot : (7x7=49) / (5x5 = 25) Lenght : 20 m / 10 m R windings : 0.22ohm / 0.054ohm Current : 50 A /...
  13. dotrick

    axial flux motor question !!

    @miles : I'm not absolutely sure but I think generating a given torque will create less copper losses with more turns. If you make motor with more turns you have more FEM... But you have to choose a Controller with high voltage output (more than FEM) to manage you motor. :? @fdracing : What is...
  14. dotrick

    axial flux motor question !!

    me too... :? If you increase the turns by 2x, you increase the FEM and the torque x2. You can decrease the current by 2x. The efficiency would be better. You have to check if you have enough space to do this... :?
  15. dotrick

    axial flux motor question !!

    92 it's not a number... 95 it's a target! :D If you want to improve the motor efficiency, you have to use laminations (M19 steel for example). For same stator size, the torque with stator lamination will be 2x than PA66. If you want the same torque, you have to double the turns for PA66, it...
  16. dotrick

    axial flux motor question !!

    I think, it's better to use square or rectangular wire than litz wire. Litz wire is for high frequency motor. For your application with Litz wire 40 x 0.1mm --> Area 0.4mm2 --> for 5.8m/phase --> 0,31 ohm --> Copper losses @157A is about 7.7Kw. For your application with square wire 0.63 x 0.63...
  17. dotrick

    axial flux motor question !!

    hmm... Thin copper should be use for minimize skin effect. For high frequencies... The Eddy current is for the stator and back iron not for windings (or not significant for windings) :roll:
  18. dotrick

    Mid Drive - 180x60mm Outrunner

    Project stopped! I study a new motor, an axial motor with one rotor and 2 stators. I read many papers and i think it's better for an ebike application. Something like 200mm outer diameter, 70mm thickness or less. I will create a new thread later. :wink:
  19. dotrick

    axial flux motor question !!

    I don't understand.... :? No steel for your rotor? only aluminium? How is the flux path? any drawing? :wink:
  20. dotrick

    axial flux motor question !!

    There are several parameters, it's difficult to explain with few words... If you want to increase the torque you have to increase turns number. If you increase the number of turns, you have to decrease the wire diameter...you increase the copper losses. If you want the same wire diameter, you...
  21. dotrick

    axial flux motor question !!

    Do you have a drawing of your motor? What is your motor configuration, 1 stator-1rotor, 2 stators-1rotor, 2rotors-1stator... :?: ironless... many possibilities ... :D
  22. dotrick

    axial flux motor question !!

    Hello, The skin depth for copper at 192Hz is 4.71mm. I checked your design with OD=400mm, ID=272mm, 32Poles, 24Slots, 4 turns/tooth (96turns/phase), I find about 200Nm, and you can use a wire awg 6 (4.12mm) for a ratio tooth/slot of 0.5. I didn't check with FEMM... Did you find this values?
  23. dotrick

    Dual rotor axial flux motor design

    @Miles I think i found the difficulty in the manufacturing of axial motor... The F... STATOR!!! :D You have to cut many patterns... :shock: ...What is the estimated price of your stator?
  24. dotrick

    Dual rotor axial flux motor design

    @h0tr0d : Useful links! thank you. :D OK, interesting... I'm not alone to ask me some questions about the manufacturing of an axial stator... I have a CNC maybe i will need it to do my stator! For your axial motor, you use a 24 Slots / 16 poles, OD 100mm, Kv <150 rpm/V, Nominal speed...
  25. dotrick

    Dual rotor axial flux motor design

    Ok, I like this configuration. It seems easy to cool. But... ... for the core, it seems difficult... I think about a laminated core What is the best core for : - the best performance? - the easiest manufacturing? I'm pretty sure it's not the same material... :?
Back
Top