Search results

Date Relevance Most replies

  1. fdracing

    axial flux motor question !!

    nobody can be sure as far as it's already done , but i dont worry , power is important but not all , torque is the point :idea: , a perfectly design rotor and blades is also very crucial ,and that parts af my skill :wink: the NorciaVelo design is a state of art , especially the stator...
  2. fdracing

    axial flux motor question !!

    have you guys see the NorciaVelo 16" motor , it look's like mine , and has all the numbers , +/- that I look for :wink: , which means , it's possible :idea:
  3. fdracing

    axial flux motor question !!

    autorotation is not my immediate problem ( the rotor design with an special collective pitch control include that possibility ) but i'll be able to climb first :mrgreen: the design I choose , doesnt include iron coils core, because of the wheight , my overal target is 300 kg including an...
  4. fdracing

    axial flux motor question !!

    I already asked some quotations , prices were :shock: 10.000 euro each and I need two motors :? , I have seen myself some of them , I think those prices are unacceptable :shock: I know what are my limits , very well :wink: , and I know what is my will , very well too :wink: infos...
  5. fdracing

    axial flux motor question !!

    there's no way to use commercial motors , I want them to be part of my rotor , without any mecanical reduction , my co-axial helicopter has to be light as possible and "simple" as possible , that's why I plan to do the motors myself . when you know how an co-axial rotors works , you...
  6. fdracing

    axial flux motor question !!

    it can be litz or what so ever , it does'nt realy matter :wink: , what matter is 200 Nm and 720 rpm , all the rest will fit with these numbers :wink: today , after some hours of reading some good books , i understood that i will took me a bit more than expected :shock: i love that...
  7. fdracing

    axial flux motor question !!

    the voltage and so the controller will be choose going on the way , all the examples I have for this kind a motors is high voltage from 120 v to 400 v , all these motors are ironless coils , non conductive thin stators , and they all work at 92 + efficiency , so it seems to be possible that...
  8. fdracing

    axial flux motor question !!

    95 for the first motor !!! kind a dream :wink: I have this soft ( FEMM ) on my computer , but being able to use it , it's another story :roll: on axial flux motor it's difficult to use lamination , because of the design itself , but I may be able to fit some laminated iron core at the...
  9. fdracing

    axial flux motor question !!

    you may laugh , but my target efficiency is the more as possible , let say 92 % I understand that the wire size i choose is wrong :? , I 'll be more around 4 to 6 mm2 , flat , square or litz , with low resistance winding :!: , any suggestion :?: I also understand that raising the...
  10. fdracing

    axial flux motor question !!

    it seems that the wire section is too small for 15 kw :? , I just got the book " axial flux permanent magnet brushlees machine" 2nd edition , for my understanding , and I start to understand a bit better the meaning of the all thing :wink: there's an example in that book ( the case study...
  11. fdracing

    axial flux motor question !!

    I took the formula from Kingfish where Kt : torque/angular velocity and finaly divide by 3 phases
  12. fdracing

    axial flux motor question !!

    Tanks to the very interesting thread : " doing the math" from Kingfish , I did some math today , changing some of my numbers , here is what it came out !! single aluminium stator : 21 coils , drop shaped double iron made rotor : 2 x 48 magnets ( disk shape 30 mm x 7 mm and 25 x 7 mm )...
  13. fdracing

    axial flux motor question !!

    what do you guys think about using thin copper strip ( example : 0.1 x 9 mm) instead of standard wire , it will be best for copper fill , and what about eddy current ??
  14. fdracing

    axial flux motor question !!

    the design is very close to the yasa motor as woolmer first designed it , the coils are just thinner , steel is at the magnets back , but I am also thinking to do the rotor in soft iron two :wink:
  15. fdracing

    axial flux motor question !!

    That's exactly what I need infos that can be turn in fact :wink: if my Aluminium parts are anodizied , they will not conduct anymore ?? on surface , what do you think !!, and the stator will be cooled , in a way or an other :wink: I did not seen your triple stator , Lebowski , any link...
  16. fdracing

    axial flux motor question !!

    my motor is 1 fixed stator with 24 drop shaped coils ( no iron in the coils ) , 2 rotors with 32 magnets each ( magnets are 30 mm diameter , 10 mm tick ) 10 mm iron at the back of the magnets stator and rotors made in 2017 A aluminium stator diameter 400 mm , 9 mm tick , rotor diameter 340...
  17. fdracing

    axial flux motor question !!

    I dont realy have tooth , my design is axial , with flat air core drop shaped coils , my first idea for the winding was : 26 meter of 1 mm2 copper wire / its about 150 turn , calculation are from a friend of mine :roll: coils will be delta connected , 3 phases , 48 v .
  18. fdracing

    axial flux motor question !!

    my rpm goal is 720 , so I understand that eddy current will really not be a problem for me !!!! the fact is that Litz wire are expensive and not easy to do by yourself :? dual 0.8 mm wire that's for big kw motors ??
  19. fdracing

    axial flux motor question !!

    I know about the torque :? it's my first goal :wink: I am not gonna use iron core for the coils ( maybe some at the back of the magnets ) , because of space , coils are 8 mm thick and air gap will be a bit less than 1 mm for the two rotor plates , as you said torque is the point...
  20. fdracing

    axial flux motor question !!

    Hi, I am making my own axial flux 15 kw motor ( for my co-axial small helicopter ) and I have a question for those who realy knows !!! ( I know there are some here !!!) these motor are : 400 mm diameter , 24 coils / 2x 32 magnets ( diam 30 mm / 10 mm) , they will rev 720 rpm , should...
View older results
Back
Top