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Old Nov 18, 2012, 08:20 PM
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Joined Jun 2008
22 Posts
Quote:
Originally Posted by Dr Kiwi View Post
I am concerned about the data sheet posted in Post#22.. that 10x8 EP is seriously over-loading the motor, such that efficiency is down to 54%! That is why I questioned the duration of the test.. to see when the 50C temperature was reached. 240W through a 54.5g motor is asking for trouble and on the higher voltages those GWS RS props are exceeding their safe RPM limits (probably no more than 40-50,000 rpm/diameter.. yet these tests are running 'em at 60-70,000rpm/diameter).

I also question the thrust figures.. DriveCalc, Badcock, MotoCalc, FlyBrushless etc have decent "Thrust from RPM" data.. the figures posted in this table are as much as 20-30% higher than can be expected from prop x at RPM y.
These are reference, we are no load test.
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Old Nov 22, 2012, 02:18 AM
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China, Jiangsu, Wuxi
Joined Apr 2012
48 Posts
Updates

Quote:
Originally Posted by big bird View Post
best thing is to list the following in all your motor description:

1. all external motor dimensions
2. shaft width and length
3. front and rear mounting dimensions
4.Kv
5.number of poles
6.internal resistance
7.maximum continuous power handling
8.and most importantly, prop data

if you do this.. you will sell a lot more motors because this is the information that modellers need in order to make a choice

good luck!
We have updated products' information.

You may find SaiTe BL motor from SH with more competitive price and better service.
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Old Nov 22, 2012, 02:35 AM
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Fourdan's Avatar
Antony (France)
Joined Sep 2003
2,791 Posts
Hello Superior Hobby

Some motors data are not indicating no load current @ xx voltage
For ST 5055 ... 6374 there is a no load current without voltage indication
I continue to think that the best catalog is to have a living software like Scorpion Calc or Dualsky Calc, opened to a lot of propellers and battery voltages.

Louis
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Last edited by Fourdan; Feb 11, 2013 at 07:09 AM.
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Old Nov 28, 2012, 05:51 AM
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Joined Jun 2008
22 Posts
Quote:
Originally Posted by Fourdan View Post
Hello Superior Hobby

Some mootors data are not indicating no load current @ xx voltage
For ST 5055 ... 6374 there is a no load current without voltage indication
I continue to think that the best catalog is to have a living software like Scorpion Calc or Dualsky Calc, opened to a lot of propellers and battery voltages.

Louis
Welcome to exchange!
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Old Feb 11, 2013, 05:31 AM
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China, Jiangsu, Wuxi
Joined Apr 2012
48 Posts
Quote:
Originally Posted by Fourdan View Post
Hello Superior Hobby

Hi Louis,

Some mootors data are not indicating no load current @ xx voltage
For ST 5055 ... 6374 there is a no load current without voltage indication
I continue to think that the best catalog is to have a living software like Scorpion Calc or Dualsky Calc, opened to a lot of propellers and battery voltages.

Louis
Thanks for your good advise, we'll ask the factory to develop a software for motor values.
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Old Feb 11, 2013, 06:57 AM
Stop scaring my donkey!
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Greenland
Joined Mar 2012
6,285 Posts
Quote:
Originally Posted by Superior Hobby View Post
Thanks for your good advise, we'll ask the factory to develop a software for motor values.
Hm, I'm still waiting....
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Old Feb 11, 2013, 07:12 AM
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Antony (France)
Joined Sep 2003
2,791 Posts
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Originally Posted by JohnathanSwift View Post
Hm, I'm still waiting....
Hi
I started Scorpion Calc Kernel development in 2006 !! 6.5 years ago !!
Louis
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Old Feb 11, 2013, 07:13 AM
Stop scaring my donkey!
JohnathanSwift's Avatar
Greenland
Joined Mar 2012
6,285 Posts
Hi. Se understands.

http://www.rcgroups.com/forums/showthread.php?t=1648587
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