|Jun 07, 2010, 01:46 AM|
Joined Oct 2008
Rewinding Scorpion 4035 kit
Hello to everyone.
I have brand new kit of Scorpion 4035 to rewind ( the type of motor is 12 N 10 P ).
I can not decide wich winding should be best for mee ( the target rpm should bee around 480 n /volt.), but only thing wich bothered mee it uses only one tooth forone group of windings.
I chosen between this two winding types :
- Firt option is LRK standard wich useses ewery second tooth, for the target rpm shoud bee, on one toth should bee 11 winding of 1,4 mm cu wire in my case to get right rpm cca 480n /volt
- And the second option is this one ( I gest is dLRK ), wich uses ewery tooth on stator and is constructed by power croco it uses 1,3 mm cu wire but needs for the same rpm/V i need 6+7 ( together 13 windings), wich means the wire is longer and lover diameter in this case and also internal resistans is bigger .
What do you thing is the benefit of the first and the second wiering, what is your recomendation and wich option shoud i chose ? This aplication shoud bee for 12 S heli
I also attached bouth sheme of the windigs to get a better look.
Best regards, and thanx for advices in fronth.
|Jun 07, 2010, 05:17 PM|
In my opinion
LRK 11 turns per tooth and pair and
dLRK 6+7 = 13 turns per pair
have not the same Kv
The difference for the same numberof turns is max 7.5%
LRK 11 is closer to 6+6= 12 dLRK (per pair)
|Jun 07, 2010, 08:03 PM|
What is the relationship between a winding KV DLRK and LRK.
I would like to know the data, Excel Add To Turn calculator.
Currently this in this way. and I only need to add this data.
Thank you very much.
Cual es la relacion de KV entre un bobinado DLRK y un LRK.
Me gustaria conocer el dato, para agregarlo al Excel de Turn calculator.
Actualmente esta de esta manera. y solo me falta agregar este dato.
|Jun 08, 2010, 02:09 AM|
Joined Oct 2008
So if I have a shorter wire with 0,1 larger diameter, the motor have lower internal resistans ( les heat ), so if I compared this two windings the normal LRK ( ewery cecond tooth ) is better for my use ?
I em corect, or I mising something, where is the cought ?
Hear is my corect measurments normal LRK wit 12 windings per tooth diam 1,4 have 440n/voltDlrk from Power Croco (6+6 2Y) have 530 n/volt.
The langitude of the wire is the same, so if I want to get the same RPM-s I must add 7+7 I gess, wich means I must put the lover ( 1.3-1.2mm) diameter wire and ofcourse longer wire ( two widigs more ), wich mean bigger internal resistans of the engine and more heat.
|Jun 08, 2010, 04:06 AM|
For the same kit, for the same number of turns (per pair)
same magnets, same wire area
Kv LRK (one tooth every 2) = 1 (ref)
Kv dLRK (every tooth) = 1.035 to 1.075
There is some uncertainty due to measurements and windings details
Maybe an average 1.05 could be adopted
|Jun 09, 2010, 01:15 AM|
Here is the latest version of Turn calculator.
But it is necessary for any engine to find the reference in DLRK delta or star.
Scorpion On page not found information that suits me for this case.
|Jun 09, 2010, 02:02 AM|
Using your data for reference.
Powercroco 2groups parallel star 6turn=530 (half parallel.)
LRK 12t,= 440.
check picture for diferents kv with diferents wind.
LRK 11 turns Delta= 477.
LRK 6Turns Star= 505.
HParallel Delta 11t=501
Fourdan say. 6,7 DLRK Delta for around 492 KV.
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