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quailbird
04-25-2011, 10:44 PM
I'm not sure where to post this, I'll try here, then if I'm wrong some one can guide me else where. I need a Nippy Black 2510/114 motor and a friend has that one and a 1812/100. He took the bells off and tried to fix the lose bell and might have gotten the bells mixed up. Is there a way a person can check which one is the 2510/114? One has a Kv of 1000 and one has a Kv of 1140. Your help would be much appreciated. Thanks!

CHELLIE
04-26-2011, 01:02 AM
I'm not sure where to post this, I'll try here, then if I'm wrong some one can guide me else where. I need a Nippy Black 2510/114 motor and a friend has that one and a 1812/100. He took the bells off and tried to fix the lose bell and might have gotten the bells mixed up. Is there a way a person can check which one is the 2510/114? One has a Kv of 1000 and one has a Kv of 1140. Your help would be much appreciated. Thanks!



get your Ohm meter out and measure the wire resistance, the one with the higher resistance will be the 2510/114, Internal resistance


79 mΩ for the 2510/114 , then hopefully the bell still has the numbers on it :D and replace the bell with the number 2510/114 on it, if not, check both bells to see if they have the same number count on the magnets and are the same width, if they are, it does not matter which motor they go back onto, as its the windings that produce the KV rating in most cases, Hope that helps, Chellie

http://www.uberallmodel.cz/index.php?id=13&lang=en


Brushless motors (http://www.uberallmodel.cz/index.php?id=3&lang=en) > NIPPY BLACK (http://www.uberallmodel.cz/index.php?id=10&lang=en)
NB 1812/100

Cat. no. 20000004
http://www.uberallmodel.cz/UserFiles/Image/1812.jpg
http://www.uberallmodel.cz/userfiles/image/akce/GALLERY.jpg (http://www.uberallmodel.cz/index.php?id=62) Price: 1.240 CZK

Price: 749 CZK

The motor is suitable for Fun fly acrobats up to 750g in weight, aerobatic models up to 800g in weight and electric sailplanes up to 1500g in weight.
No. of cellsRecomended prop.2s Li-PolyAPC 11 x 4,7 SF
APC 11 x 5,5 E3s Li-PolyAPC 10 x 3,8 SF
APC 10 x 5 E4s Li-PolyAPC 8 x 3,8 SF
APC 9 x 4,5 E
DimensionsŲ 40,2 x 53 mmShaft diameter4 mmWeight62 gNo. of cellsLi-Poly 2 ÷ 4


NiCd, NiMH 8 ÷ 12Maximum sustained current




18 AMaximum efficiency




80%Current for efficiency > 75%7 ÷ 18 ANo load current / 9,6V1,5 AInternal resistance


64 mΩ No load rpm / V1.020



Brushless motors (http://www.uberallmodel.cz/index.php?id=3&lang=en) > NIPPY BLACK (http://www.uberallmodel.cz/index.php?id=10&lang=en)
NB 2510/114

Kat. no. 20000005
http://www.uberallmodel.cz/UserFiles/Image/2510.jpghttp://www.uberallmodel.cz/userfiles/image/akce/GALLERY.jpg (http://www.uberallmodel.cz/index.php?id=97&lang=cs)
Price: 1.240 CZK

Price: 749 CZK

The motor is suitable for Fun fly acrobats up to 1050g in weight, aerobatic models up to 1500g in weight and electric sailplanes up to 2000g in weight.
No. of cellsRecomended prop.2s Li-PolyAPC 11 x 4,7 SF
APC 12 x 6 E3s Li-PolyAPC 10 x 4,7 SF
APC 11 x 5,5 E
APC 11 x 8,5 E
DimensionsŲ 40,2 x 53 mmShaft diameter4 mmWeight63 gNo. of cellsLi-Poly 2 ÷ 3


NiCd, NiMH 8 ÷ 10Maximum sustained current




25 AMaximum efficiency




79%Current for efficiency > 74%10 ÷ 21 ANo load current / 9,6V2,0 AInternal resistance


79 mΩ No load rpm / V1.140

CHELLIE
04-26-2011, 01:10 AM
If you need a Ohm meter, Harbor freight tools has them for $4.99

http://www.harborfreight.com/7-function-digital-multimeter-90899.html

http://www.harborfreight.com/media/catalog/product/cache/1/image/370x/9df78eab33525d08d6e5fb8d27136e95/i/m/image_2304.jpg

Larry3215
04-26-2011, 02:06 PM
Excellent suggestion Chellie - except that those cheep meters wont come close to measuring that low a resistance. You will need a hi end DVM which will cost way more than two new motors :)

Those two motors are different sizes - or at least the windings/stators are, so those two bells should also be different sizes. I would think it would be obvious which goes where with a little carefull measuring. The depth should be slightly different on each. Or perhaps just stick them on and see how they look, then switch them around and see which works better.

quailbird
04-26-2011, 04:51 PM
Thanks every one! He got some help from someone that know what he is doing and figured out which motor was which. I think they did what was suggested here. I sure appreciate the knowledge available on the forum. May the Lord bless all of you! Your friend in Christ, Carl Covey (quailbird)