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Reply | Forward Message #176 of 202 |
Drive Calculator 3.3 is now available

Drive Calculator 3.3 is now available from www.drivecalc.de

I warmly recommend studying the manual to make the best possible use of the
software.

New features in this version:

* The new search and filter function lets you select motors by their KV
value. This function may help you in finding similar motors in case your
motor is not in the database.

* Simplified use of the "virtual dyno" to create power constants for
propellers based on motor measurement data.

* In case a propeller's thrust constant is not available in the
database, Drive Calculator displays an estimated thrust value.

* You can change the number of cells by dragging the mouse cursor
vertically anywhere in the diagram area while holding the left button.

* A warning message is displayed if the supply voltage exceeds the
limits of the ESC.

* Drive Calculator for Linux does not crash any more during a database
update.

* Fixed a bug in the database update code that occasionally warped the
motor computation results.

* New algorithm for evaluating more than 3 sets of motor measurement
data achieves closer approximation.

* Re-designed motor calculation reliabilty rating displays more
meaningful results.


Have fun.
Christian




Mon Nov 12, 2007 9:34 pm

ted13332000
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Message #176 of 202 |
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Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the D-calc group. File : /e-motor test...
D-calc@yahoogroups.com
Send Email
Jun 9, 2007
11:35 pm

Hi Pete, sorry, your dyno results are flawed. I. e. @49sec: 10.59V 22.63A 5636rpm Efficiency 80.4% With nsid 671.9rpm/V ideal no load rpm at 10.59V would be...
Christian Persson
ted13332000
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Jun 10, 2007
1:17 am

Hello Christian I can check. no-load data is not related to dyno however (torque=0) The equation set I am using is a bit different from yours, so the relations...
Pete
schelbis
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Jun 10, 2007
7:02 pm

Hello Christian I have put the motors: Plettenberg Orbit 20-16 and 25-16 at 10V and 12V into Dcalc (Excel- version V221_026). I see there, efficiency is also...
Pete
schelbis
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Jun 10, 2007
10:08 pm

... I have not seen any Plettenberg measurement data yet that I could feed into Drive Calculator. Remember, you have to include accurate no load data. Could...
Christian Persson
ted13332000
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Jun 10, 2007
10:40 pm

Hi Christian In my measurements, no load is not of real relevance. So I am not looking much at it. I tried to vary the no load data in Dcalc, just to see what...
Pete
schelbis
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Jun 13, 2007
6:28 pm

Hi Pete, no load data are most important. In fact, the no load behavior shows the amount of iron and friction loss at no load speed. That is a big part of ...
Christian Persson
ted13332000
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Jun 13, 2007
9:09 pm

Hi Christian yes, in case you have no torque data. If you have torque-data, you do not need it. best regards Peter ... shows the ... part of ... happens. ... ...
Pete
schelbis
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Jun 13, 2007
9:42 pm

Yes, if your dyno is well calibrated. Yours isn't. Christian --On Mittwoch, 13. Juni 2007 21:37 Uhr +0000 Pete <petezx@...>...
Christian Persson
ted13332000
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Jun 13, 2007
10:57 pm

Hi Christian I will check, respectively calibrate. The Plettenberg-Data shows in principal the same results. Waht is your opinion on the results with...
Pete
schelbis
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Jun 15, 2007
6:20 pm

Hi Christian I checked now the dyno. The result: the precision is +-1g or 1% whatever is worse. This transfers to 0.1Ncm in torque or 1% whatever is worse. I...
Pete
schelbis
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Jun 26, 2007
7:15 pm

Hi Christian I uploaded a wordfile with the plots of the data in it for the Dyno comparison Compact490 best regards Peter Schelbert ... torque ... toruque ... ...
Pete
schelbis
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Jun 26, 2007
7:24 pm

Hi Christian I found a measurement from FMT 7/06 (see also on the website of FMT under download www.vth.de)of the Graupner Compact 490. I analyzed this data....
Pete
schelbis
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Jun 28, 2007
9:10 pm

Pete, in <http://groups.yahoo.com/group/D-calc/message/148> I have applied a basic rule that proved your dyno results were too good to be true. That rule is...
Christian Persson
ted13332000
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Jun 29, 2007
10:17 am

Hi Pete, we are not talking about formulae that I have invented. It is a fundamental law that efficiency cannot exceed the relation loaded rpm/no load rpm and ...
Christian Persson
ted13332000
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Jun 10, 2007
10:31 pm

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the D-calc group. File : /e-motor test...
D-calc@yahoogroups.com
Send Email
Jun 26, 2007
7:21 pm

Drive Calculator 3.302 is now available on www.drivecalc.de. This version fixes two bugs (see www.drivecalc.de/DC33/Readme.html ). The database as well has...
Christian Persson
ted13332000
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Nov 20, 2007
11:51 pm

I have posted the free Drive Calculator 3.2 on www.drivecalc.de. This new version ist a must-have for all Drive Calculator users, since it includes a new SQL...
Christian Persson
ted13332000
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Aug 25, 2007
10:08 pm

Goedendag ;-) Some 'problems': http://www.rcgroups.com/forums/showthread.php?t=733287 http://www.rcgroups.com/forums/showthread.php?t=742064 Vriendelijke...
Ron van Sommeren
ron_van_somm...
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Sep 20, 2007
11:51 pm

Drive Calculator 3.3 is now available from www.drivecalc.de I warmly recommend studying the manual to make the best possible use of the software. New features...
Christian Persson
ted13332000
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Nov 12, 2007
9:34 pm

Hi Christian, I'm just going over the new 3.301 version and something dawned on me. It would be helpful to be able to bookmark the cells as well. Some folks...
Kenneth Myers
kmyersefo@...
Send Email
Nov 18, 2007
4:19 pm
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