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Old Dec 19, 2008, 06:12 AM
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Antony (France)
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Hi Roger

I suggest to you to have a look here
www.bungymania.com
It is a very good french site by Bernard CHEVALIER
Search Outils/Moteurs (BMDB)
means Tools/Motors (Brushless Motors Data Base)

Then you get a list of motors ..
Selecting a motor you get
a) Picture + specs
b) Real world test chart on some props
Louis
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Old Dec 19, 2008, 10:02 AM
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Louis,

If it helps you, for those motors for which I have figures, I am adding no-load "rpm" and "Io" for other voltages (7v and 8v) in addition to the standard 10v I've already got in there.
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Old Dec 19, 2008, 10:47 AM
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Phil
Thanks. Yes, following my methodology, it is interesting to record physical Rm @ 20C + different no load figures :
V_o, I_o, rpm_o for several Vo from 6V to the maximum voltage V_omax corresponding to the maximum rpmo tolerable by the motor mechanical quality.
Now I am used to make a polynomial regression V_o*I_o = W_o versus rpm_o
V_o * I_o is practically representative of iron losses, as Rm*I_o^2 is low.
Louis
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Old Dec 19, 2008, 12:55 PM
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I'm not sure my family will be happy with my keeping the house at 20C - they like 21C-22C better!
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Old Dec 19, 2008, 05:48 PM
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Quote:
Originally Posted by Dr Kiwi
I'm not sure my family will be happy with my keeping the house at 20C - they like 21C-22C better!
Hi Phil
Like myself, you could measure at 22C in your living and then correct the figure to fit 20C value.

Or could be at 12C (inside your wine cellar) and then do the math !!
Do you prefer Burgundy or Bordeaux before to compute the correction ?
Louis
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Old Dec 19, 2008, 07:12 PM
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Heck Louis, you know I can't afford good French wine - I buy New Zealand Sauvignon Blanc because they make it better than anyone else, and that's what my wife drinks. I buy Australian Shiraz and Cabernet Sauvignon because they do it well and they are CHEAP in the US ($6 or so) - NZ makes a few good reds, but in small quantities, and by the time they get to the US they are a ridiculous price ($50).
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Last edited by Dr Kiwi; Dec 19, 2008 at 09:10 PM.
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Old Dec 19, 2008, 08:47 PM
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Motor data file

Here's a motor data file I compiled mostly from aerobat's hard work

Most of the information contained here is for Hobby City motors but there are others.

Most of the information is specs from the mfg.

Enjoy
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Old Dec 20, 2008, 03:58 AM
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Quote:
Originally Posted by Dr Kiwi
Heck Louis, you know I can't afford good French wine - I buy New Zealand Sauvignon Blanc because they make it better than anyone else, and that's what my wife drinks. I buy Australian Shiraz and Cabernet Sauvignon because they do it well and they are CHEAP in the US ($6 or so) - NZ makes a few good reds, but in small quantities, and by the time they get to the US they are a ridiculous price ($50).
Hi Phil
Same for me
My "every day" wine is "Cotes du Rhone" "Vieilles Vignes" price 2.6 euros per bottle. Excellent quality/cost ratio (similar to gf/watt ratio).
We have also "Vin de pays d'Oc" "Merlot" around 2 euros / b
Of course french "good & cheap" wine is not exported. Too much cost for shipping.
Louis
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Old Dec 20, 2008, 01:25 PM
C4X
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As a noob, I would suggest a page which helps one interpret the specs of a given motor, i.e.: How do I choose the correct motor for my setup as per each manufacturers supplied data (for each motor)? I find it confusing because different manufacturers commonly use different values in reference to motor performance. Also, an FAQ explaining what each of the performance values represent would be very helpful when choosing for a given setup.
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Old Dec 20, 2008, 02:38 PM
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We really don't want to re-invent the wheel - I would suggest that this business of deciding "which motor suits my application" is very well covered here:

http://www.rcgroups.com/forums/showthread.php?t=739069
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Old Dec 20, 2008, 10:48 PM
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I've added about 30 more motors from Dr Kiwi's test that were missing. I also added the test data for various EDFs.

Robert
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Old Dec 21, 2008, 02:03 AM
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Advance Search

I have the search part of the advance search working, and I hope to have a form built in the next few days to make easy for everyone to use. However in the meantime for those of you who are a little more savvy and want to give it a try now, here is how it works.

You take the base address for the search and add your search criteria to the end of it using <field>/<value>. You can search on as many fields as you want, just keep adding them on to the end of the address. The order doesnt matter so long as its after advance and is always a field/value pair. The base address for the advance search is the following:

http://www.flybrushless.com/search/advance/

Here are a few examples to help you make a little more sense out of this. The first is a simple example to search for all motors in the database with a kv of 1200 you would use this URL:
http://www.flybrushless.com/search/advance/kv/1200

Here is another example that will return all motors with a KV between 1000-1200 that can handle over 16 amps.
http://www.flybrushless.com/search/a...0/max_amps/16:

As you can see in the 2nd example if you include a : in the value you can set a range to search in. If you use a value of 0:5 it will search for matches between 0 and 5. If you use 5: it will return values greater then 5. Finally :5 returns matches less then 5.

Here is a list of all the fields you can currently search on the items in () are comments and should not be included:
  • make (Ex: Himax, Axi, etc)
  • model
  • type (Outrunner, Inrunner)
  • weight (in grams)
  • max_amps
  • max_rpm
  • diameter (in mm)
  • length (in mm)
  • shaft (in mm)
  • kv
  • rm
  • io
  • user
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Old Dec 22, 2008, 01:01 PM
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Bruce Abbott's tests:
http://homepages.paradise.net.nz/bha...test_data.html

Vriendelijke groeten Ron
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Old Dec 22, 2008, 06:27 PM
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Yes, I know Bruce has lot's of good data... I'll get Robert to ask if Bruce's figures can be included.
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Old Dec 22, 2008, 08:09 PM
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Does he have an RCG account or do any of you have an email address for him? I don't want to add someone else's data without their permission.

Robert
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