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Search: Posts Made By: ron_van_sommeren
Forum: Beginners 12-09-2012, 12:53 PM
Replies: 8
Views: 702
Posted By ron_van_sommeren
Very handy/instructive tools and calculators,...

Very handy/instructive tools and calculators, wiring diagrams, demos:
The Script Asylum (http://www.scriptasylum.com)
-> RC calculations...
Forum: Power Systems 10-03-2012, 04:43 PM
Replies: 15
Views: 1,234
Posted By ron_van_sommeren
How do you fly? Throttle management or WOT most...

How do you fly? Throttle management or WOT most of the time? Six feet is a LOT.

Battery wire resistance (voltage and power loss) is not the issue, when talking about long battery wires will kill...
Forum: Power Systems 09-16-2012, 02:16 PM
Replies: 2
Views: 850
Posted By ron_van_sommeren
Only Kv and power (better: max.current) are...

Only Kv and power (better: max.current) are important Steve. And to a lesser extent, efficiency (= $$$). Voltage does not kill a motor, current does: volts jolt, current kills. The rest follows from...
Forum: Beginners 09-15-2012, 12:43 PM
Replies: 55
Views: 4,754
Posted By ron_van_sommeren
New Weatronic (http://www.weatronic-usa.com/)...

New Weatronic (http://www.weatronic-usa.com/) transmitters, scheduled for 2013.

Hall-sensors (https://en.wikipedia.org/wiki/Hall_effect_sensor) (contactless) instead of pots...
Forum: Humor 09-09-2012, 12:02 PM
Replies: 2
Views: 635
Posted By ron_van_sommeren
Talking A typical sunny day in Great Brittain ...

A typical sunny day in Great Brittain.
Mayhem ...
Bloodshed ...
Trauma ...
Mutilation ...
Madness ...
Injury ...
Pain ...
Mishap ...
Perseverance ...
Forum: Scale E-Powered Aircraft 08-20-2012, 07:23 PM
Replies: 5
Views: 2,131
Posted By ron_van_sommeren
Dummy motors, last item on page. Nice plane kits...

Dummy motors, last item on page. Nice plane kits too :)
http://www.topnotchkits.com/index_files/TN_Kits.htm

http://www.topnotchkits.com/index_files/Gallery/ContEngine/ContEngineSM.jpg...
Forum: Power Systems 08-15-2012, 02:39 PM
Replies: 12
Views: 909
Posted By ron_van_sommeren
E-flight 101 by RCG member Ken Myers, will at...

E-flight 101 by RCG member Ken Myers, will at least save you a ruined LiPo (or worse!), a burnt motor and a fried ESC:
http://www.theampeer.org/framesefo.html
-> Electric Power Basics
and this...
Forum: General Electric Discussions 06-29-2012, 06:43 PM
Replies: 32
Views: 3,526
Posted By ron_van_sommeren
Answered somewhere in the RCG thread. ...

Answered somewhere in the RCG thread.

Prettig weekend ;) Ron
www.modelbouwforum.nl
Forum: General Electric Discussions 06-29-2012, 03:22 PM
Replies: 32
Views: 3,526
Posted By ron_van_sommeren
Not quite the average voltage. All answers in...

Not quite the average voltage. All answers in this thread by seasoned EE's (I'm an EE gone over to the dark side, embedded software), Bruce Abbott designed a few diy controllers and Greg Kamysz was...
Forum: General Electric Discussions 06-28-2012, 10:42 PM
Replies: 32
Views: 3,526
Posted By ron_van_sommeren
E-flight 101 by RCG member Ken Myers, will at...

E-flight 101 by RCG member Ken Myers, will at least save you a ruined LiPo (or worse!), a burnt motor and a fried ESC:
http://www.theampeer.org/framesefo.html
-> Electric Power Basics
and this...
Forum: General Electric Discussions 06-18-2012, 07:08 PM
Replies: 33
Views: 2,450
Posted By ron_van_sommeren
Twin motor setup: careful with extending battery...

Twin motor setup: careful with extending battery wires:
http://www.rcgroups.com/forums/showthread.php?t=952523
-
-
Forum: General Electric Discussions 05-24-2012, 12:29 PM
Replies: 27
Views: 3,039
Posted By ron_van_sommeren
Don't worry Denny, you could/must reduce battery...

Don't worry Denny, you could/must reduce battery capacity accordingly by a factor 10: same amount of energie stored, same weight.

BTW if you are looking for high voltage high current controllers,...
Forum: General Electric Discussions 05-23-2012, 03:53 PM
Replies: 27
Views: 3,039
Posted By ron_van_sommeren
Silicone insulated. The Dutch repair...

Silicone insulated.



The Dutch repair centre for Futaba, JR, HiTec and Simprop says he repairs/sees ESC's on a regular bases, due to long battery wires.

Mind you, it's not all black or...
Forum: General Electric Discussions 05-23-2012, 10:18 AM
Replies: 27
Views: 3,039
Posted By ron_van_sommeren
Goedendag Haystack ;) Skin-effect does not come...

Goedendag Haystack ;) Skin-effect does not come into play at the frequencies ESC's use (8, 16 or 32kHz). This also goes for the harmonic (higher) frequencies...
Forum: Power Systems 06-18-2011, 02:54 PM
Replies: 32
Views: 2,947
Posted By ron_van_sommeren
All good, but not enough, add capacitors, as ALL...

All good, but not enough, add capacitors, as ALL esc manufacturers say.

About better controller cooling:
www.mgm-compro.com
-> tech.info
-> controller cooling in models

Prettig weekend ;) Ron
Forum: Power Systems 06-16-2011, 07:34 PM
Replies: 32
Views: 2,947
Posted By ron_van_sommeren
The guys at castle do have a point Larry. Thank...

The guys at castle do have a point Larry. Thank you :)
Forum: Power Systems 06-16-2011, 10:57 AM
Replies: 32
Views: 2,947
Posted By ron_van_sommeren
The killing voltage spikes are higher than...

The killing voltage spikes are higher than battery voltage and are caused by wire inductance, not by battery or wire resistance. Using thicker wire is a good idea though, it gives lower voltage drop...
Forum: Power Systems 05-08-2011, 06:26 PM
Replies: 19
Views: 2,837
Posted By ron_van_sommeren
Too long battery wires will kill ESC, over time: ...

Too long battery wires will kill ESC, over time:
http://www.rcgroups.com/forums/showthread.php?t=952523

Contents
Problem
Solution
Rule of thumb
Capacitor type
Capacitor polarity!
...
Forum: Power Systems 10-13-2009, 09:53 AM
Replies: 416
Views: 27,226
Posted By ron_van_sommeren
female dog, female dog, moan, moan, whine, whine...

female dog, female dog, moan, moan, whine, whine ...
Just keep sending mail after mail, that will do the trick, so they get swamped even more.

I know this is a service thread but some here are...
Forum: Brushless Motor Construction 10-11-2009, 02:17 PM
Replies: 95
Views: 13,300
Posted By ron_van_sommeren
It's an overlapping 'wave' winding diagram. E.g....

It's an overlapping 'wave' winding diagram. E.g. several Actro (http://www.actro.de) and all X-era (http://www.xeramotors.com) motors use that diagram too. It is a 6statorpole/8magnetpole motor, it's...
Forum: Brushless Motor Construction 09-20-2009, 03:01 PM
Replies: 24
Views: 4,020
Posted By ron_van_sommeren
http://www.youtube.com/watch?v=iHYlWKICkqc ...

http://www.youtube.com/watch?v=iHYlWKICkqc
http://www.youtube.com/watch?v=Ybb0Ysh0FRE

Motor rewinding 101, must read:
www.gobrushless.com
-> knowledge base
-> basic overview 1-5

Tips and...
Forum: Brushless Motor Construction 09-09-2009, 09:45 AM
Replies: 14
Views: 4,642
Posted By ron_van_sommeren
Most efficient motor: ...

Most efficient motor:
http://www.csiro.au/resources/pf11g.html

As others already wrote, more information about the vehicle for narrowing things down would be very useful Nate.
What kind of...
Forum: Power Systems 09-04-2009, 08:22 PM
Replies: 32
Views: 2,462
Posted By ron_van_sommeren
Rotor inertia, whether brushed, brushless,...

Rotor inertia, whether brushed, brushless, inrunner or outrunner, is not relevant compared to prop inertia.

Prettig weekend ;) Ron
Forum: Power Systems 08-28-2009, 09:36 AM
Replies: 8
Views: 1,280
Posted By ron_van_sommeren
And always restrain an electric model, e.g. with...

And always restrain an electric model, e.g. with two screwdrivers firmly placed in front of undercarriage.
Electrics can't be trusted.

Prettig weekend ;) Ron
Forum: Power Systems 08-17-2009, 05:45 PM
Replies: 1
Views: 672
Posted By ron_van_sommeren
(RCG) 'Mythbusters': Lower Kv = more torque?

Discussion:
http://www.rcgroups.com/forums/showthread.php?t=1096719

I think user Vintage1 needs no introduction.

Vriendelijke groeten ;) Ron
Forum: Brushless Motor Construction 08-09-2009, 05:02 AM
Replies: 95
Views: 13,300
Posted By ron_van_sommeren
All winding diagrams will work. Whether a certain...

All winding diagrams will work. Whether a certain number of winds is ok for running a certain size (too) large prop, that's another story. In the early diy brushless days (2000) there was only one...
Forum: Power Systems 07-29-2009, 05:26 PM
Replies: 10
Views: 1,296
Posted By ron_van_sommeren
3 (three) $ diy Watt-meter:...

3 (three) $ diy Watt-meter: http://www.rcgroups.com/forums/showthread.php?t=949923 Vriendelijke groeten ;) Ron
Forum: Power Systems 07-26-2009, 03:38 AM
Replies: 33
Views: 6,562
Posted By ron_van_sommeren
Apply grease to both surfaces and scrape it off...

Apply grease to both surfaces and scrape it off with your credit card. Grease should only fill the microscopic holes in the surfaces. Any more grease than that will add to thermal resistance. ...
Forum: Power Systems 07-17-2009, 06:09 PM
Replies: 13
Views: 1,123
Posted By ron_van_sommeren
It's a service done by the good doctor, for free....

It's a service done by the good doctor, for free. Don't tell me that's a bad thing, and you certainly cannot disqualify the doctor's work as a "bad thing". What you call "In flight motor testing¨ is...
Forum: Power Systems 07-16-2009, 11:26 AM
Replies: 13
Views: 1,123
Posted By ron_van_sommeren
I too have found that several motors/makes/types...

I too have found that several motors/makes/types double in power and/or torque and/or rpm in flight :D Vriendelijke groeten ;) Ron
Showing results 1 to 30 of 108

 
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