Search: Posts Made By: ron_van_sommeren
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01-11-2019, 08:53 AM
Replies: 3
Views: 272
Posted By ron_van_sommeren

... because otherwise you'd have two (voltage)...

... because otherwise you'd have two (voltage) captains on one ship.

Don' t remove the red pin completely, you may need it again in another plane.

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01-10-2019, 12:58 PM
Replies: 3
Views: 224
Posted By ron_van_sommeren

Some well-structured reading for rainy/windy...

Some well-structured reading for rainy/windy days, and some handy e-tools as well. Will save you, and us 2263194 a lot of questions. Notably the 'what went wrong?' kind of questions 2263195 Will also...
01-10-2019, 12:57 PM
Replies: 3
Views: 224
Posted By ron_van_sommeren

Not a specific answer for you, but in general ......

Not a specific answer for you, but in general ...

It is a good practice to have some headroom built in.
About derating motors, controllers, batteries, electronics in general:

Derating,...
01-10-2019, 12:54 PM
Replies: 3
Views: 224
Posted By ron_van_sommeren

By choosing a smaller prop, a power system cannot...

By choosing a smaller prop, a power system cannot be too much. You cannot overrev a motor with too small a prop.


Plane type and mass are leading when choosing a power system.

Rules of thumb...
12-31-2018, 03:54 AM
Replies: 3
Views: 330
Posted By ron_van_sommeren

Remember, Kv is not a rating, not a figure of...

Remember, Kv is not a rating, not a figure of merit. And it is no indicator for a motor's max. power, max.current, max.torque.

An excellent quote from
brushless motors Kv?...
12-31-2018, 03:53 AM
Replies: 3
Views: 330
Posted By ron_van_sommeren

Better not do glow equivalencies, e-motors are...

Better not do glow equivalencies, e-motors are more flexible and can run at lower rpm (prop more effictive). Different beasts. Also, (2-stroke) glow max. power is specced at useless high rpm.
.

...
Replies: 2
Views: 286
Posted By ron_van_sommeren

Outrunner Disassembly and Stripping - RCG...

Outrunner Disassembly and Stripping - RCG (https://www.rcgroups.com/forums/showthread.php?t=1823636)

Disassembly
Removing the shaft
Removing the bearings


Changing a shaft & grinding a...
12-25-2018, 03:25 AM
Replies: 2
Views: 192
Posted By ron_van_sommeren

The controller is trying to tell you something...

The controller is trying to tell you something using beep/morse code, and using the motor as a poor loudspeaker.
Google the manual specifications instructions code for your controller make/type.
11-29-2018, 08:54 AM
Replies: 2
Views: 236
Posted By ron_van_sommeren

Better ignore glow-equivalencies, e-motors are...

Better ignore glow-equivalencies, e-motors are way more flexible, and can rev at lower rpm, using a more efficient prop. Glow motors max.power is specified at useless rpm i.e. overrated.

Plane...
Replies: 3
Views: 187
Posted By ron_van_sommeren

In fact, it is a good practice to have some...

In fact, it is a good practice to have some headroom built in.
About derating motors, controllers, batteries, electronics in general:


Derating, starting at ... Then there is the 75% rule of...
Replies: 3
Views: 187
Posted By ron_van_sommeren

30A, 100A, 1000A, 10000A, ..., all ok, apart from...

30A, 100A, 1000A, 10000A, ..., all ok, apart from the extra mass to drag around.
Controllers don't force feed motors with electrons. Current at full throttle is proportional to pitch¹...
11-14-2018, 04:30 AM
Replies: 5
Views: 192
Posted By ron_van_sommeren

Some well-structured reading and handy e-tools...

Some well-structured reading and handy e-tools for rainy/windy days. Will save you, and us :D a lot of questions. Notably the 'what went wrong?' kind of questions :( Will also prevent you from...
11-14-2018, 04:25 AM
Replies: 5
Views: 192
Posted By ron_van_sommeren

. close out sale Hyperion Emeter II, with...

.
close out sale Hyperion Emeter II, with optical and electrical tach, servo tester, local&remote logging - RCG (http://www.rcgroups.com/forums/showthread.php?t=2649140)

Without a watt-meter...
Replies: 11
Views: 356
Posted By ron_van_sommeren

Keep controller(s) close to battery, extend motor...

Keep controller(s) close to battery, extend motor wires.
Keep the battery wires short, or else install extra capacitors.

Too long battery wires can kill ESC: precautions, solutions & workarounds...
Replies: 11
Views: 356
Posted By ron_van_sommeren

Without a watt-meter...

Without a watt-meter (http://www.wattflyer.com/forums/attachment.php?attachmentid=117297) you are in the dark.
Until something starts to glow :( ;)

To trust is good :)

To calculate...
Replies: 11
Views: 356
Posted By ron_van_sommeren

If this is your first e-plane/experencie:...

If this is your first e-plane/experencie: e-motors are way more dangerous than gas engines.

I think it is safer/better/simpler/easier/cheaper/safer to start with a low power plane, motor setup,...
Replies: 11
Views: 356
Posted By ron_van_sommeren

Don't replace cc's Dan, doing gas<>electric...

Don't replace cc's Dan, doing gas<>electric equivalencies limits choices and ranges.
To a propeller, gas kilowatts are not the same as electric kilowatts.
Plane type and mass are leading.

Rules...
Replies: 5
Views: 300
Posted By ron_van_sommeren

Overheating magnets causes de-magnetizing...

Overheating magnets causes de-magnetizing (https://en.wikipedia.org/wiki/Curie_temperature) (irreversible! :(), which in turn results in higher Kv. Motorcurrent is proportional to Kv³ :eek: , and...
10-26-2018, 04:13 PM
Replies: 0
Views: 206
Posted By ron_van_sommeren

online graphing tool for motors and propellers

An online graphing tool for DC motors and propellers
www.mshtests.co.nf/motor_plots.html (http://www.mshtests.co.nf/motor_plots.html)

Announcement, questions/suggestions...
Replies: 15
Views: 470
Posted By ron_van_sommeren

No, not possible. It is impossible for motor to...

No, not possible. It is impossible for motor to run faster than Kv × voltage.

Construction is strong enough, it can handle the vibrating, but it is not stiff enough.
Motor mound is already...
07-14-2017, 06:02 AM
Replies: 8
Views: 828
Posted By ron_van_sommeren

As long as C-rating does not come with number of...

As long as C-rating does not come with number of battery lifecycles, manufacturers/shops can ... eehhrm ... 'phantasize' all they want. Some 'phantasize' less then others.

About derating motors,...
Replies: 1
Views: 978
Posted By ron_van_sommeren

Some well-structured reading and handy e-tools...

Some well-structured reading and handy e-tools for rainy/windy days. Will save you, and us 2223579, a lot of questions. Notably the 'what went wrong?' kind of questions 2223580
Will also prevent you...
06-27-2017, 09:01 AM
Replies: 3
Views: 678
Posted By ron_van_sommeren

Blanket questions, gives no answers, waste of...

Blanket questions, gives no answers, waste of time
Rc plane help - WFF (http://www.rcuniverse.com/forum/&quot;http://www.wattflyer.com/forums/showthread.php?t=78655&quot;)
Rc plane help - RCG...
06-27-2017, 08:53 AM
Replies: 10
Views: 1,030
Posted By ron_van_sommeren

Motor-soldering, motor-connectors,...

Motor-soldering, motor-connectors, motor-connections, connections in motor:
Motor stuttering? Won't run? Read before asking. RCG...
Replies: 5
Views: 778
Posted By ron_van_sommeren

Watery analogy: your 3/8" kitchen watertap pipe...

Watery analogy: your 3/8" kitchen watertap pipe is connected to a several inch mains water pipe, no problem.
Pressure and pipe determines maximum current, tap determines actual current.
...
Showing results 1 to 25 of 400
 


 
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