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-   -   how come .5 turns (https://www.rctech.net/forum/radio-electronics/951297-how-come-5-turns.html)

rekim 07-06-2016 05:13 PM

how come .5 turns
 
How come all of the motors are .5 turns. for example, like 17.5 or 8.5.

How come there is not 17 or 8?

jbrow1 07-06-2016 05:18 PM

An interesting question. I'm in :)

Andy Koback 07-06-2016 05:35 PM


Originally Posted by rekim (Post 14592893)
How come all of the motors are .5 turns. for example, like 17.5 or 8.5.

How come there is not 17 or 8?

Winding's start out on one end of the stator and end up on the other end resulting in a half turn.

jbrow1 07-06-2016 08:16 PM


Originally Posted by Andy Koback (Post 14592921)
Winding's start out on one end of the stator and end up on the other end resulting in a half turn.

So simple, thanks for the answer :D

ta_man 07-06-2016 08:23 PM

Not all motors are half turns. I've seen Thunder Power 550 size that are 4.0 turns and 5.0 turns.

One day I was on the phone with them and asked how that is done given that the collector ring is usually in the front of the motor and the terminals in the rear (thus the half turn to get from front to rear). The guy I was talking to said he didn't know and that the guy who designed the motors was no longer with the company.

I have seen whole turn motors from other manufacturers, just don't remember exactly which ones right now.

Socket 07-06-2016 08:36 PM

Reedy's 8.0 is my favorite mod ever made.

Brian Bosley 07-07-2016 12:01 AM

Supposedly something to do with wye and delta winding methods. the even winds are my favorite in sedan which are supposed to be delta.

romanmotruk 07-07-2016 02:26 AM

in order to remove half a coil from windings of the motor, you need to unsolder the rear ring, and to connect the windings on top of everything at one point, but many engines make it impossible, but if you connect in Delta, to avoid a cluster of wires, then the revs will increase 1.82 times!!!

DirkW 07-07-2016 05:23 AM

Delta winds and Y-winds are not comparable in performance for the same number of winds at all (deltas rev much higher). So unless specified as Delta wind, a .0 motor of the same series as the .5 motors, is most likely not a delta wind.

Roelof 07-07-2016 07:08 AM

By rules the delta wind is also forbidden. The motor must have a Y wind.

SLOWINSLOWOUT 07-07-2016 08:29 PM


Originally Posted by Roelof (Post 14593414)
By rules the delta wind is also forbidden. The motor must have a Y wind.

Only for 'stock' classes, 10.5-25.5T motors, mod classes have no restrictions on type of wind.

Roelof 07-07-2016 10:42 PM

true


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