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-   -   XO-1 1717 (1650kv) vs Neu-Castle 1717 (1580kv) (https://www.rc-monster.com/forum/showthread.php?t=31218)

Big House 04.19.2012 09:32 PM
XO-1 1717 (1650kv) vs Neu-Castle 1717 (1580kv)
 
Before I push the button on the the XO-1 1717, is it the same size as the older one castle stopped making?

Arct1k 04.19.2012 10:40 PM
Same size but with Newer rotor design.

Big House 04.19.2012 10:52 PM
Excellent...just got to bid well on one. Thanks friend.

brian015 04.20.2012 07:15 AM
Info from Patrick:

Quote:
Originally Posted by Pdelcast (Post 414430)
We developed a whole new stator and rotor design for this car -- it uses a shorter and lighter rotor for faster spin-up, and is up to 4% more efficient than the original 1717.

The stator design was optimized for higher maximum currents, and higher saturation currents -- so the efficiency doesn't "brick wall" at extreme currents.


http://www.rc-monster.com/forum/show...30&postcount=9

nitrostarter 04.22.2012 04:42 PM
We can assume that the can on these 2 motors are identical, just different stators?

bigblkblazin 04.27.2012 08:22 AM
What do the numbers 1717 signify ?

brian015 04.27.2012 08:30 AM
Edit: Listen to him, not me \/ \/ \/

RC-Monster Mike 04.27.2012 08:53 AM
I am pretty sure the 1st pair of numbers indicate the stator diameter and the 2nd pair indicates the rotor length - a 1717 has 1.7" stator diameter and 1.7" rotor length(magnet). A 1521 would then be 1.5" stator diameter and 2.1" rotor length.

ta_man 04.29.2012 09:31 PM
Quote:
Originally Posted by RC-Monster Mike (Post 420474)
I am pretty sure the 1st pair of numbers indicate the stator diameter and the 2nd pair indicates the rotor length - a 1717 has 1.7" stator diameter and 1.7" rotor length(magnet). A 1521 would then be 1.5" stator diameter and 2.1" rotor length.
That was my understanding too, but then given this info from Patrick:
Quote:
Originally Posted by Pdelcast (Post 414430)
We developed a whole new stator and rotor design for this car -- it uses a shorter and lighter rotor for faster spin-up, and is up to 4% more efficient than the original 1717.
... how can it still be a 1717? If the rotor is shorter?

Wouldn't that make it a 1716 or a 1715?

bigblkblazin 04.29.2012 09:49 PM
Thats exactly what I was thinking .....

RC-Monster Mike 04.30.2012 11:22 AM
I guess it depends on how much shorter, doesn't it - if the new rotor is .01" shorter, it would still be closer to a 1717 than a 1716 and therfore fitting of the moniker(while still being shorter and lighter as Patrick described it).


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