Power in Flux
Likes Likes:  1
Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Best ~10kg motor at the moment?

              
   
   
  1. #1
    Member
    Join Date
    Feb 2013
    Location
    Sweden
    Posts
    48
    Post Thanks / Like

    Best ~10kg motor at the moment?

    Hello!

    I'm trying to find the best/latest motor for a light powerful motorcycle, possibly for racing. Motor should be about 10kg and up to 50kW peak. I have an Agni, but its not reliable enough at that power level.

    The Agni will be 10 years old soon. Are there any modern 10-11kg brushless motors which can beat it?

    I'm also interested in smaller motors, maybe 5kg, for small light bikes to be ridden on indoor gocart tracks.

  2. #2
    Senior Member tomdb's Avatar
    Join Date
    Apr 2013
    Posts
    196
    Post Thanks / Like

  3. #3
    Senior Member __Tango's Avatar
    Join Date
    Aug 2010
    Location
    Mountain View, CA
    Posts
    803
    Post Thanks / Like
    For smaller motors, try the revolt line. Revolt.org.il.
    EVs: 2007 Zapino Scooter, Honda VF500 Conversion (electriceptor.wordpress.com), Red Nissan LEAF SL (Arrived!)

  4. #4
    Member marcexec's Avatar
    Join Date
    Oct 2010
    Location
    Dublin, Ireland
    Posts
    41
    Post Thanks / Like
    Shameless plug: I have entered 50 motors into a sortable table in the ES Wiki: https://endless-sphere.com/w/index.p...otor_Selection
    I can add the Emrax 208 for comparison, question: should I put 3 (AC/LQ/CC) or 9 (+HV/MV/LV) variants in?
    My Suzuki RF400 build over at ES: http://endless-sphere.com/forums/vie...p?f=12&t=35865
    (Enertrac MHM602, Kelly KHB14301, 6kWh AESC modules (Renault, Nissan))
    Based in Dublin, Ireland

  5. Likes Spaceweasel liked this post
  6. #5
    Senior Member tomdb's Avatar
    Join Date
    Apr 2013
    Posts
    196
    Post Thanks / Like
    I would just add the 208, since the power rating for those is already way more then plenty for the range of motors you have so far.

  7. #6
    Member
    Join Date
    Feb 2013
    Location
    Sweden
    Posts
    48
    Post Thanks / Like
    Thanks guys. The Revolts looks like good motors. And the Emrax' looks amazing.

    How about the controllers for the Emrax? I remember when the 208 was new there was only a few controller which could handle it. Because of Low inductance, e.t.c.
    Which controller is suitable for the 207 with low voltage windings?

  8. #7
    Senior Member Hugues's Avatar
    Join Date
    Jan 2012
    Location
    Switzerland
    Posts
    1,075
    Post Thanks / Like
    Quote Originally Posted by bjn View Post
    Thanks guys. The Revolts looks like good motors. And the Emrax' looks amazing.

    How about the controllers for the Emrax? I remember when the 208 was new there was only a few controller which could handle it. Because of Low inductance, e.t.c.
    Which controller is suitable for the 207 with low voltage windings?
    For Emrax, check first if the top speed is not too slow for your application, it was for mine.

    Emrax on their website list the controllers that are compatible.

    Look also how much current you will need to feed the Emrax if you run at low voltage and still want all the power, it's not small.
    Regards from Switzerland
    My 2.5 Upgrade Thread

  9. #8
    Junior Member nucciosan's Avatar
    Join Date
    Feb 2017
    Location
    Milan - Italy
    Posts
    7
    Post Thanks / Like
    Quote Originally Posted by marcexec View Post
    Shameless plug: I have entered 50 motors into a sortable table in the ES Wiki: https://endless-sphere.com/w/index.p...otor_Selection
    I can add the Emrax 208 for comparison, question: should I put 3 (AC/LQ/CC) or 9 (+HV/MV/LV) variants in?
    Hi Marcexec LV is voltage level fit for us "do it yourself" people, I believe.

    Recently I found this chinese motor. Can we trust in stated specifications?
    http://www.freerchobby.com/product_display.asp?keyno=73
    If it had only half of the declared performance it could be very interesting !

  10. #9
    Member
    Join Date
    Feb 2013
    Location
    Sweden
    Posts
    48
    Post Thanks / Like
    Quote Originally Posted by nucciosan View Post
    Hi Marcexec LV is voltage level fit for us "do it yourself" people, I believe.

    Recently I found this chinese motor. Can we trust in stated specifications?
    http://www.freerchobby.com/product_display.asp?keyno=73
    If it had only half of the declared performance it could be very interesting !
    Similar here
    http://alienpowersystem.com/product-...r-motor-150mm/

    What concerns me with these large chinese RC motors is the high no-load current.

    The one in your link states 30A. That would be 3600W at 6000rpm if it's for the 50kv, otherwise more.
    Compared to 1700W at 6000 on the Emrax.

  11. #10
    Junior Member nucciosan's Avatar
    Join Date
    Feb 2017
    Location
    Milan - Italy
    Posts
    7
    Post Thanks / Like
    Hi
    Also in my opinion Emrax motors are the best choice in the 40-80Kw range.
    They have well designed and builded their product.
    Another thing in my point of view that is very important is that have tested and well characterized their motors.
    They explored the motor limit with special instrumentations at Siemens laboratories.
    So they could make a very precise and detailed documentation that gives credibility to their product performance.
    In my opinion is this last thing that lacks in the products proposed by China.
    Written data are too generic and incomplete, so their presentation makes them seem false.
    It may be that they are good motors, but until someone does not buy them and test them it remain a possible swindle.

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •