Alternative motor windings and drive schemes

[Clugh]

Here a regular single layer bemf on the HK 5020.

[Clugh]

I like that PLETTI!

Ralph,
Sebastian wound hybrids and know how to run his pc based scope application so you know what the rest of the results look like right?





Have fun....
ttyl,

Hubert

[Clugh]

I went around the world 6+4 with the outside transition wire first so 1 more under the bottom and 2 more over the top would be an 8+8 DL YY in 17 Awg. That will exceed the copper surface of the competition Pyro 650 factory wind from Kontronics.

The wire left is long and pre needle pointed for the 1 under and the 2 over. It looks like it should fit. I did not file the enamel the stator is factory..

Dont stay up too late..

Hubert

[Clugh]

Hi Ralph

I see you've been in and out . During you next in time.....Its amazing how much better the overall Kontronics construction is compared to scorpion. 😳


They run bearing inside a carrier even on the smaller motors. they are also sporting 3 bearings. weigh less, and make more power than the black and gold.... In the 650 a shim was added to tie the bearing axial support together.

Very smart engineering . I wonder by the weight difference what grade aluminum scorpion is turning versus Kontronics

[Clugh]

Seems to me the hobby motor and inverter scene is a bit lost. They don't seem to understand BLAC bemf(sinus) is more compatible with a sinus drive and a BLDC bemf is better with a six step. People are interested to run drone six step drives when the bemf from dl wye's will be more sinus every time. All you do is induce torque ripple with mismatched power system.



I wont say it again a BLHELI inverter is six step so why any one wants a sinus wind that produces a sinus bemf with it is really astonishing to me....



But the hobby market is what it is.... people just buy whatever and vendors just sell it to them..

[Clugh]

Hi squawkers.

If you get a chance read through my colleague Loring millers review of the most popular batteries In this moths issue of NAMBA PROPWASH. We fast electric boaters sink more amps than all other forms of rc so it might be worth your time in reading. I found it very interesting based on what's believed about some brands vs how they really perform.

But Its Up to you....


namba.com/content/library/propwash/2024/april/#page/6

[Clugh]

If I put the black and gold on top DSP based FOC do you understand any better the embedded drive that's motor agnostic and can teach itself your props?

The main PCB that determines most of Sadulli's properties is the power stage PCB. The power stage is composed of three BUK9K6R2-40E MOSFET arrays.

~Zubax~

You out of date with the 320 bruh...

[Clugh]

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Boho1
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Speed dial....in 2 min direct from Germany and scorpions winding guru.....😉

[Clugh]

The DL YY BEMF does look like this SL YY HK5020 especially if it were terminated in a delta which this was not.
Its almost a triangle and that is going to work better with a six step than one with smooth rounded crest and valleys
A dual layers esp a wye is a more sinus like signal. if you a winding guru you should know that. You all put your scopes captures away because you didn't want me to calculate your THD or provide me photos as ammunition from your own collections that CONFIRM what I'm talking about.

RALPH!

[Clugh]

If you are at electronics inverters and motors this isnt damn hard to understand

I guess all you can do at 4:51 am est in America is sit there silent on our forum and stare with ya mouth hanging open..

[Clugh]

Seems to me you and a few others don't understand where commutation ripple comes from.

[Clugh]

[Clugh]

KISS sinHybrid


sinHybrid combines the trapezoid block commutation, but still controls the motor with a kind of sine wave. This makes the motor quieter and more efficient. Another advantage is the improved smoothness which means less vibration. The less vibrations are exposed to the gyro, the better and smoother the copter can fly in the end. In order to avoid loss in KV, the commutation fades into trapezoidal at around 90% throttle.
~Kiss 32~





You smart but cant understand the right wind does something similar but better on the back end and at 90% and beyond. because my wind looks to have eliminated the sinus signature all together with a true BLDC bemf not a pseudo sinus.....


Go on to bed player.... Pyro-mania isn't up yet.....

[Clugh]

I hope you understand why there is less commutation ripple here...Power


Boho1
Member
Last Activity: Today, 05:12 AM
Joined: Sep 13, 2023
Location:

TTYL
Hubert

[Clugh]

And poor scorpion because they cant seem to match your wind with their Tribunus six step drive so you opt out for the antiquated slow sinus YGE....that at wot is still a mismatch with your DL machines because even it turns to 6 step at >90 throttle... Scorpion dont have sense enuf to stop this mismatched madness.... because you are fighting with LRK in WOT applications which is technically backwards. Who cares about partial throttle efficiency and higher internal resistance inverters in WOT high current applications...🤕

Only "DD" for now....

[Clugh]

Anyways...magnet wire strippers, Kester brand silver solder, lead free water soluble flux, & 250C glass insulation sleeving.

[Clugh]

3% silver . I think Ive seen high as 5% stated for audiophile which is fine because the inverter is our amplifiers and the motors are our speakers. So If you can get that 4 or 5 % silver use it.


And Good morning Ralph. You're up early and here before I even wake up. I won't capture your speed dial for this morning. @ 7:20 EST
You are a real Vampire for knowledge... guru... U beat me to my own thread, so I guess I need to send you season tickets to my blue countertop!



Stay tuned....for the daily winders news since you're already ANONOMOUSLY subscribed and here first thing in the morning in America.........

The GSM just like helifreaks and RCG motor sections is silent buddy.... 999 🙏

Don't feel bad I often visit the GSM but not for the thumpers high idle currents. My favorite German winders are Dekker, Thomas and Holle who wind Kontronics.....

Hubert💔

[Clugh]

I've never used UHU end fest to secure the wires though because it would be a weak link at 120C if the wire is 180-300C and the magnets are 180C Ralph.... Clearly people in straightaway speed run events like you have seen temperatures above 120 at elevated amperages . This is optically clear and stable to 180C and what I've been using but I've been looking for something that's optically clear but not purely heat resistant and insulative. I have PEEK coated magnet wire from ZEUZ but it is slightly more insulative than typical enamel and it is not clear obviously. In my search I have found an optically clear epoxy that will wick a little heat away. There may be something better but I haven't searched all the suppliers of thermally conductive adhesive products. It also brings some other things like special shock qualities into he mix. This can be especially important for things like cryogenic cooling cycles.

Look at the poor endfest coils on the scorpio.....💩

Why would you continue doing it if all it can do is let go at 120 and you know you see temperatures greater than that? If the coils are allowed to slide back in forth on the armature, 100s of times per second, eventually it will meet iron. Anyone can see these photos are not the product of "cool runnings" unless you are high and on the Jamaican bobsled team.

You can talk about "Anglophiles" on your forums buddy.... but they wont put 120C epoxy on a competition motor with 240-300C wire wrapped around the arms.

Make it make sense....

[Clugh]

Here's a couple of products.

KB 1040-2 two-part room temperature curing epoxy system - Kohesi Bond

"Kohesi Bond KB 1040-2 is a two component, room temperature curing epoxy system suitable for bonding, sealing, coating and encapsulating applications. It has a favorable 10:1 (Part A: Part B) mix ratio by weight. The highlight of this products is its superior optical clarity and its capability of passing NASA low outgassing test. In addition, this product offers very good flow properties, allowing it to be applied in extremely thin layers. This epoxy system readily cures at room temperature and can achieve faster cures at elevated temperatures. The optimal cure schedule is an overnight room temperature set-up followed by a heat cure at 70°C – 90°C for 3 – 5 hours.

KB 1040-2 can be serviced cryogenically. It offers an extensive serviceable temperature range of 4K (-269.15°C) to +150°C. It is a phenomenal adhesive that offers outstanding physical strength properties. KB 1040-2 adheres well to a wide variety of substrates including metals, ceramics, most plastics and glass. In addition to superior electrical insulation and dimensional stability, it also offers astounding chemical resistance to a variety of acids, bases, solvents, fuels, oils and water. This unique product’s vacuum compatibility, light transmission capability and strength makes it ideal for use in aerospace, electronics, optical, fiber-optic and various OEM applications."

~Koshi Bond~

[Clugh]

Appli-Tec 5336 Epoxy - Low Viscosity, Flowable - Thermally Conductive

5336 Epoxy — 1.48 W/mK

300C


"5336 is a black, electrically isolating, self-leveling, highly thermally conductive epoxy designed specifically for staking and encapsulating electronics on circuit boards as well as potting and encapsulating power supplies, transformers, and coils. This material is ideal for applications requiring a thermally conductive epoxy with resistance to solvents and chemicals. 5336 is supplied in frozen syringes or as a two-part, room temperature kit."

~Appli-Tech~