Alternative motor windings and drive schemes

[Clugh]

Were only 2 weeks away from the beginning of composite machines that weigh less.

• Print Nylon Carbon Fiber, Nylon 12 Carbon Fiber, and the new ABS Carbon Fiber with RapidRinse support material

[Clugh]

[Clugh]

Someone asked about the issues of moisture retention in the nylon. Here is one solution but there is also carbon fiber and ABS

[Clugh]

Method series ABS Carbon Fiber - UltiMaker

[Clugh]

The scorpion A series 5025 x 2 is also interesting for a new 5050 speed motor in the right hands. It is less than 55mm in external dimensions and its 14 pole. Two 5025's run about 630.00 usd I could build a limited run and use a carbon fiber retention and still fit the nose diameter of a typhoon as an example There are alot of choices i could wind that will compete with a powercroco 5050 . I can definitely bring better numbers than a 300 year old wind. 20 years with endfest is a long time to not know anything about it. It needed a degassing chamber badly see the bubbles Ralph. Those become localized hot spots but they are everywhere...u got something really special when you combine it with 480 watts of loss at idle with the bifilar job.

[Clugh]

Christian Lucas
i received your email and found photos of the renault zoe motor for you. Looks like its dc excited rotor. Almost looks like a huge universal motor.

[Clugh]

I looks composite it almost looks like an air coil topped off with iron hammers. Thats Different

[Clugh]

[Clugh]

The rotor brush assembly

[Clugh]

Look like 4 poles...dc excited smart and a lot cheaper to build material wise

Also alot safer to assemble than a PMAC but for that u have post assembly magnetization.

[Clugh]

With that you don't really have Demag but the iron could still be saturated . I bet they still have solid state switching on these huge radial brush capstans to Comtrol the rotor winding current. u see there is no slotted commutator Just the copper brush bands I

[Clugh]

[Clugh]

[Clugh]

Hi Ralph

Christian from Lehner Motoren in Germany sends his regards.....



Thu, Jun 27 at 3:35 PM



Hi Hugh,

I've looked at your windings. It's wound really neatly and the casting is really good. That's how it should look. The guy is going to look pretty stupid. The Okon speed flying group has not made any progress for years now. They have no new ideas. They also no longer inform themselves. They have never understood flux compression technology, just as they never understood the Halbach magnet system. How to reduce eddy currents in permanent magnets is also state of the art - simply by building the magnets out of small magnetic parts or using the snakeline cuts as made by Bomatec. You won't find any of that in Reptil Boy Ralph's book. Okon has to overhaul the motors he has wound after a very short period of time, re-bearing them, cleaning them and putting a lot of work into them. He writes that this is normal practice in Class E racing cars. But that's not true. Formula E racing engines are only serviced after a much longer period of time, and none of the motors constantly burn out. Only Okon's motors have this problem. His motors are not right at all.


Gruß/ regardes
Christian

[Clugh]

I know the truth Christian....
The company I work for happens to supply the EF1 Jaguars inverter's power electronics..😶 We're the world leader of GaNfet and SiCfet technology and he is running an inverter with dpak220 3 pin mosfets from 30 years ago talking about I need to study....


Hubert

[Clugh]

APD40F3
100 ampere peak @ 6s lipo .3 grams

[Clugh]

Anyway...... U can get the Renault Zoe dc excited motor for 1600.00 salvaged USD. Id put it on a 100 hp outboard lower unit and play with it.

One more nite on the grind and polish

Ttyl
Hubert

[Clugh]

I've also been in convo with Bomatec for some time now.


I really have things to do so here is something for now to look at for the boys.....

Danke
Hubert

[Clugh]

At 16S we saw >400A with such winding.
But to survive this without damages the Motor needs cool wind cooling - means 500km/h+ and some "afterrun" - just like a high loaded turbo into a car.
Kai, Tim and Dzhamal and Walter used one of these Type in their 600km/h+ runs.

After the 2024 season I will check them all and make them fit for the World Speed Masters with the best pilots and models.
You are invited to join!
~powercroco~

Yes Ralph DZHAMEL runs this and it end up in the ground over and over again this is his third big plane.. Hes spent 20000 eaxy and has hit 600kmh 1 time. Were going to show you just like every other tikme that we can built a better much lighter machine here in America. They will also be available to anyone. All I see is a lot of unnecessary weight.

I plan very much to send you air mail from America very soon!!!! What u need is a better winding and design al together. We will show u in days to come how its done.'

You should be building with A series components. Let the old **** go.

[Clugh]

If the motor can only do it job of >400 amperes on cold days it is clearly overloaded!!! WOW Ralph I cant believe i have to spell that out for an "expert" its nut because you post the winding previously and said the empirical chart said they were only good for 280 amperes so the motors windings are operating at peaks 120 amperes above that. Yeah its going to get hot then and u seem to have trouble with the math.

I will join u at an event. As a American I am definitely not intimidated by you, you motors, planes or equipment . I have all that then some.

If my pilot comes to Germany and takes your crown I will fly over because I want the trophy personally handed to me by you. Okay?

You are a silly man because this configuration could have easily been 4-8 Y-D 4 layer machine and attenuated all the AC losses in the pm

Hubert