12-07-2003, 01:54 PM
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TinyRC Pro
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Join Date: Oct 2003
Location: 2K2 WRB WRX
Posts: 49
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Winding Basics
I know some people don't know the requisite information (as I don't) regarding the effects of windings & gauge etc etc... so lets get the info togeather
Higher Windings =
Lower Windings =
Max Suggested Windings =
Min Suggested Windings =
Higher Gauge Wire =
Lower Gauge Wire =
if there is anything I'm missing let me know. I plan on updating this based on the info I recieve to keep the info current.
oh and, we should probably include a tutorial as to how to actually wind your own motor.
sherif
Last edited by sherifx; 12-07-2003 at 01:56 PM.
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12-07-2003, 03:09 PM
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Mad Scientist
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Join Date: Oct 2003
Location: Buffalo, NY
Posts: 901
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Here is a good link on winding a motor, with lots of pics:
http://www.carmoworld.com/parts-motor2.htm
Anyway, a couple of answers to your questions:
Less turns: Higher top speed, higher current draw, lower torque, shorter battery life.
More turns: Lower top speed, lower current draw, more torque, longer battery life.
Max suggested windings: I'm going to go with 85 for these motors. That's what the stage 1 uses, and I don't see why you'd want to ever go more than that.
Miniumum suggested windings: Definitely more than 25... :lol: 25 turns is unusable even with Neodymium magnets. PN Racing sells a 35 turn armature, that's the lowest I've seen so far in a 130 style motor. (540 motors like the 1/10th scales use often go as low as 8 or 9 turns, but that is because they are a larger motor with much more torque)
Some of the other important variables in motor design are the magnets and brushes. Particularly, the spring tension of the brushes on the commutator can have a large impact on the performance of a motor.
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-- It is by will alone I set my mind in motion...
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12-07-2003, 04:02 PM
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I'm not a pyro, really.
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Join Date: Jul 2003
Location: Little Falls, NY
Posts: 1,117
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how do they effect the performance?
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Yellow Skyline X-MOD: AWD, Ball bearings, 4.5 tie rod & Stock springs, Stage 2 Road Race Motor, 6 Cell Mod
Silver RSX XMOD: Stock, Stage 2 Drift Motor
NEVER UNDERESTIMATE THE POWER
OF STUPID PEOPLE IN LARGE NUMBERS!
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12-07-2003, 04:52 PM
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Mad Scientist
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Join Date: Oct 2003
Location: Buffalo, NY
Posts: 901
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Brushes: Lighter spring tension gives more speed. Too light causes arcing and poor performance.
Magnets: stronger gives more torque, less top speed. Weaker gives more top speed but less torque.
__________________
-- It is by will alone I set my mind in motion...
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12-07-2003, 08:01 PM
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TinyRC Pro
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Join Date: Oct 2003
Location: 2K2 WRB WRX
Posts: 49
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Quick Questions:
how do you pull the tabs back on the XM armatures?
anybody every try doing say like a 30T Double like the larger size motors?
what are the effects of gauge sizes? what are the changes in going up or down in gauge size?
sherif
Last edited by sherifx; 12-07-2003 at 08:06 PM.
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12-10-2003, 01:33 PM
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Perfected Bit Modder
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Join Date: Oct 2002
Location: Corvallis, OR
Posts: 303
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35 double turn
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12-10-2003, 01:36 PM
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Perfected Bit Modder
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Join Date: Oct 2002
Location: Corvallis, OR
Posts: 303
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how bout a 264 turn...talk about tourque..wow
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12-10-2003, 01:37 PM
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Perfected Bit Modder
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Join Date: Oct 2002
Location: Corvallis, OR
Posts: 303
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i also have made a ~10turn triple..motor...it has awsome speed...and it wont fry ur esc, it'll fry ur batteries..lol
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12-10-2003, 02:47 PM
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TinyRC Pro
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Join Date: Oct 2003
Location: 2K2 WRB WRX
Posts: 49
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rmyc, maybe you can help me then, I'm trying to get a motor to have decently hi rpms (30K +), with a lot of torque in the mid to high rpm range without frying the stock esc. To explain my application, I've built a drift car and I want to run it with the 4.40 (yellow) gear set. With my Spinbrush Hybrid (using the stage 2 armature), I can get the car to break traction of all four wheels on garage cement, but I still want even more torque, b/c the car can bog (due to the gearing) mid turns etc...
additionally, can you tell me if there is any problem with this winding technique. The black line indicates the direction of the wire winding:
sherif
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12-10-2003, 03:48 PM
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Perfected Bit Modder
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Join Date: Oct 2002
Location: Corvallis, OR
Posts: 303
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as far as i know the winds should overlap like this
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12-10-2003, 03:56 PM
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TinyRC Pro
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Join Date: Oct 2003
Location: 2K2 WRB WRX
Posts: 49
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cool.. well then what do you think would be the best way to achieve my goals... I have 22, 26 and 30 gauge wire.
sherif
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12-10-2003, 04:10 PM
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Perfected Bit Modder
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Join Date: Oct 2002
Location: Corvallis, OR
Posts: 303
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the thicker the wire (smaller gauge) the more the torque, but less turns would fit on the amature ,which leads to less speed....it's all about balancing out the number of turn to that gauge of the wire
you mah also want to upgrad to neo magnets :
http://mini-zracer.com/shop/product.php?pid=327
it adds a ton of torque
tinyrc's sister site has great deals on them.
a full ball bearign can would help tons
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12-10-2003, 06:53 PM
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Bad Driver
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Join Date: Jan 2003
Location: You tell me!
Posts: 363
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That is the full story- More current, more tourqe. More tourqe, more speed.
Simply unwinding your stock wire will decrease tourque and increase speed. Replacing it with a smaller gauge (bigger diameter) will increase tourqe and speed, but your batteries and PCB can only flow so much current, which is why tourqe drops. Inductance also affects the tourqe-speed balance, and windings effect inductance. That's why some 1/10 motors have multiple winds (10T double, triple, etc.), to alter the inductance, decreasing tourqe for more speed. Better magnets are usually a plus, different winds can negate the speed loss. 1/10 motors just use insanly strong magnets, especially for "punchy" applications such as touring cars.
Of course, the size of the motor limits your winding options as nuero pointed out. If you could wind one with 10T of 8G wire, and had the current to do so, it would be faster and tourqier, as well as draw huge amounts of current.
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Last edited by Nathan; 12-10-2003 at 06:59 PM.
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12-10-2003, 07:53 PM
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TinyRC Pro
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Join Date: Oct 2003
Location: 2K2 WRB WRX
Posts: 49
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Nathan, thanks for your input!
I wound a 43turn armature w/ 30 gauge. I love the speed of this setup, now I just need to pick up a BB can with Neo magnets... I think this should do: Yeah Racing
sherif
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12-10-2003, 10:35 PM
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Bad Driver
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Join Date: Jan 2003
Location: You tell me!
Posts: 363
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That case will definatly do. I didn't know dinball carried that stuff...
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American Muscle? We're the fattest country!
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