Alternative motor windings and drive schemes

[Clugh]

The new Certified Pyro I stripped of UHU encapsulated windings only need the last two turns. It can be a 6+4 or (5+5) with symmetrical coils appears to run a little better empirically.
Now she can breathe.

[Clugh]

The Gaishen is apart and the old delta wind looks very "Gothan" in nature...

She was blown all the way up and even threw the pm out of place. Not your typical rebuild but we will have a go at it. I have the glue for it.

[Clugh]

On the frontside the epoxy is thick so after removing the wires I have to scape the extra epoxy off before you rewind it so it goes easy

[Clugh]

Disa did a good job winding this one. It was clean. Unlike Gotha motors Kontronics also believes in potting the windings. They epoxy the stator and wires in place with construction epoxy. Probably "UHU" which is a pure insulator but better than nothing at all for securing pulsing wires. What we use in a rewind is boron nitride infused epoxy made for motor coils. It has 400% more thermal conductivity than a factory certified Kontronics.

In this photo Gotha motors has shown us what NOT to do with UHU which is always the wrong thing to use as a pure insulator if you want a cooler running machine..

[Clugh]

This one was fairly easy to get apart. No SiC production to nigh due to the bad weather, so Ill wind it and a brand new certified 650 for Spencer Key's (helifreaks 🙊) TDR

No old pink antiques here. These are brand new Kontronics QC certified cars for F3A and Heli competition use.




For the TDR


Danke,
Hubert

[Clugh]

F3A German Championship 2026

8/29-8/30 2026

Registration ends 7/31/2026



Anmeldung F3A_DM_2026 - Modellflugverein Werdenfels

[Clugh]

Just received from CK Aero a rotor locked Gaishen and the 50 Hk still needs a band aid for F3A ....

[Clugh]

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[Clugh]

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[Clugh]

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[Clugh]

Clugh

Way too many links to the Wiki and elsewhere.

Could you dial it back, please.

Best, LB

You can erase the entire thread and everything in it if it appeases someone important. It won't change anything about my success or knowledge.....

Thought it might be interesting for some and there's is enough evidence to support that it is but I really do not care about it to be quite frank.

I wont waste my time with karens then

Thank you,
Hubert

[Elbee]

Clugh

Way too many links to the Wiki and elsewhere.

Could you dial it back, please.

Best, LB

[Clugh]

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[Clugh]

You wont get any more work
.

[Clugh]

Cobra5 12S marine version . I have to have it. Probably 2 for twins in a Catamaran or a Hydro Outrigger. I have a Martin Truex inspired twin JAE 45 rigger. The Ghost RC is another 90,000 rpm 45mm motor with a stainless sleeve on the rotor.

Two Roostertails are always more fun than one.

On the water It is surely more than 200 mph potential in two motors like this. Maybe I can take a shot at it the world record at 6 or 8 s lipo. I have had rigger design in my head now for about 4 years that can do it. In the attachment is essentially a stainless Octura V 900 cleaver series cut with an aspect ratio of 1.9

The motors can snap even aged beryllium in some cases. So the stainless is another option.

Online store DoctorProps RC - Everything for radio-controlled models

[Clugh]

You’ve also got the Ghost American speed line Cobra5 ACE, along with the 8s and 12s marine versions. Nothing pushes an inverter’s power quite like an FE boat.

[Clugh]

Castle is a step ahead of me and sent this brand new and improved Cobra5 2026 as the upgrade to the XLX.

It is 32 bit with "enhanced datalogging with higher sampling rates with additional capacity and data points..."

It will rock well with the King Cobras 5340 ARNON 7 cores

[Clugh]

Gotha Winders,

Übrigens teile ich Thomas Schmidts Theorie des Synchronisationsverlusts, die er auf der Anzahl der Umdrehungen basiert, nicht. Der DDDD ist im Wechselstrombetrieb deutlich lauter als ein DD, was zu einem schnelleren Verschleiß der Magnete führt. Lärm als Ursache für einen vorzeitigen Synchronisationsverlust erscheint mir viel plausibler. Tatsächlich gibt es Informationen und praktische Daten, die dies bestätigen.

Die Desynchronisation von BLDC-Motoren wird am häufigsten durch Magnetdegradation (Hitze, Vibrationen, Alterung), mechanische Belastung, unzureichendes Wärmemanagement, Überlastung und Timing-Probleme des Controllers verursacht. Die stärksten Hinweise deuten darauf hin, dass die Desynchronisation mit der Entmagnetisierung zusammenhängt, die das für die Synchronisation erforderliche Drehmoment direkt reduziert.

Die Theorie, dass die Anzahl der Spulenwicklungen die Ursache sei, ist völlig unbegründet.

Der Betrieb mit vier parallelen Dreieckschaltungen führt mit Sicherheit zur lautesten Maschine, die man bauen kann. Zwölf unverdrillte, parallele Drähte sind nicht optimal.

Good luck,
Hubert

[Clugh]

BTW a Brand new Pyro 600 in the USA today cost 366 euro. PYRO 600-12 - KONTRONIK - Hochleistungsantriebe im RC-Modellbau

That is 424.00 dollars USD



A Clugh Master-rebuild service for a Brenner contra drive in F3A competition airplanes includes.

A Remington industries 240*C 18 AWG 5 + 5 parallel wye winding potted in thermally conductive epoxy. It also includes a Mitsumi custom application-specific motor shaft for the Brenner contra drive, with a 4130 hardened steel axial tie-in sleeve and three orange seal ABEC 7 ceramic hybrid ball bearings, treated and lubricated with high-speed tungsten disulfide bearing grease.

The "Better" economy makes the entire proposal for a brand new Brenner drive prepped motor greater than $700.00 dollars USD .

Enjoy your day,
Hubert

[Clugh]

This would also be an interesting cool sink proposal for passive pump ferrofluid liquid cooling.