These popped up here, they look decently made. Lowest kv is 395, but perhaps they might be re-terminated for lower?Miles wrote:What similar sized motors are there? It would be good to make a list.
- http://www.hobbyking.com/hobbyking/stor ... c_eq_.html
- http://www.hacker-motor-shop.com/e-vend ... &c=36&p=36
- http://www.plettenberg-motoren.com/UK/M ... /Motor.htm
mdd0127 wrote:I know it doesn't seem like it but 100 motors is probably about 90 more motors than there are people that would be interested in them.
Only in as much as it was behind the original decision to go for 16 poles, rather than 20...bigmoose wrote:Earlier in this thread Luke mentioned the commutation capability of the Sevcon and Kelly controllers. Has that limit been integrated into the expected design and max speed? (not sure I saw a concluding response) Just a thought that this motor should be wrapped around an existing controller and not a vaporware controller. Might help with implementation into a vehicle so that it is not an orphan motor.
liveforphysics wrote:Just as some design info, the Sevcon is limited to ~500hz commutation freq (if I remember correctly).
The Kelly Ultra-High-Speed option is limited to 1100hz (in my testing, and it was getting glitchy past 1000hz).
I think the "infinions" can do something around 2000hz (but there have been so many versions and chips used by this point, I have no idea what current ones do).....
That's ok, if you want to get involved in distributed winding patterns and more inactive copper.Thud wrote:I could just drop the pole count like they did to the KD motor linked above
I wish I knew more about this... I found this general reference (see below).Thud wrote:Given the lack of responce on my previous questions regarding the inductance & winding patterns............
Arlo1 wrote:Thud I played with leaving the counter wind out and it does not hurt inductance. If you have 4 turns on one tooth then 4 the opposite way on the next tooth and 4 turns the first way on the third tooth in a roe it all adds up so if each tooth gives 5uH then all three will add to 15uH I played leaving the second tooth out and just trying the first and last of the 3 and in that case it would be 10uH!
Ref: viewtopic.php?p=457932#p457932Thud wrote:interesting Arlo. Did you measure with all 3 teeth rwond in the same direction?
That is slightly in conflict with the video you linked in the 1st page of this thread.
Not since 19th March - a few days after his last post on my thread. I hope he's ok..... I'll send him a PM.Thud wrote: has Eric signed in lately? (i assume he is swamped with school year end activities)
deVries wrote:Some folks reading this exciting new motor thread will recall all the excitement about the Colossus motor designs that many on ES contributed their time & efforts to "make happen".
Did that project & completed motors run into problems, so adopting wide use of that motor was very limited or impractical? I think there were various issues that were discovered after the motors were built & received.
Is there anyway this new motor design can avoid all the pitfalls the Colossus ran into, so as not to repeat those mistakes??? What are the major issues to avoid, so this doesn't become a Colossus mistake???
I'm excited to watch this development move towards a super design and finished product that is matched perfectly with some excellent controllers too. Good luck ES geniuses.
Sort of like a hub motor?mdd0127 wrote:What about having the can riding on bearings on a non moving hollow shaft?
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