Rix
100 TW
markz said:
Agree with MarkZ
How can we make custom tuned ES edition motors a reality?
- Thread starter macribs
- Start date
Agree with MarkZ
markz
100 TW
You know what comes to mind, is that Croatian guy/company Cromotor, dont they just buy generic motors then upgrade them either in house or by some other means.
I have looked at people making their own motor, and it really doesnt seem that hard if you have all the tools. I will try to find that youtube video, they look to be Ukrainian or Russian. Awesome video. Ah my memory serves me.
Its not this https://www.youtube.com/watch?v=2LNfDI3QUpQ
This is it Ukraine - https://www.youtube.com/watch?v=TKjZgAvZAwM
Its like a 4 or 5 part series, this is 2 - https://www.youtube.com/watch?v=0kOMIuP75WU
I have always been fascinated with how this guy built his. Simple process.
I would say if someone has a lathe, and a little experience, why not do up a prototype.
I have looked at people making their own motor, and it really doesnt seem that hard if you have all the tools. I will try to find that youtube video, they look to be Ukrainian or Russian. Awesome video. Ah my memory serves me.
Its not this https://www.youtube.com/watch?v=2LNfDI3QUpQ
This is it Ukraine - https://www.youtube.com/watch?v=TKjZgAvZAwM
Its like a 4 or 5 part series, this is 2 - https://www.youtube.com/watch?v=0kOMIuP75WU
I have always been fascinated with how this guy built his. Simple process.
I would say if someone has a lathe, and a little experience, why not do up a prototype.
macribs
10 MW
- Joined
- Jul 22, 2014
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Great chain of thoughts Markz, a prototype would be golden.
On the other hand it seems #Crossbreaks CB120 thread got new wind, and his mid drive might be out in august. Maybe we should all gather in on one project and focus all energy on one custom motor rather then spread us thin on various motors? He is doing a mid drive, that is not a problem for me. I don't what others feel?
Also I am not certain what kind of output is expected from the CB120 the CB 120 mid motor. Hopefully >12 kw peak.
In the meantime if anyone with skills and free time could do a prototype of ie a QS 205 or maybe the new mxus 55 Turbo? If maybe we can donate cash together so we take the cost of getting the stock motor, and the prototypee(?) don't have financial outlay for a motor? What you guys think?
1: Anyone with me to donate cash for a donor/stock motor so we can have a prototype?
2: Is there anyone with a lathe and skills that could do a prototype? Or better yet we could split the load between more then one person?
I don't think we need to outline every tiny details before we see what people think of these 2 questions, if we get positive response we can go further and hammer out the details, maybe one can mill the back iron, another do the custom axle, and one do the side covers? I know it can be risky to divide tasks like this, if one drops out we can be stuck'd with an uncomplete prototype. Yet in order to minimize the work load and burden from one person take the whole prototyping we might get more interest if we split up project into smaller parts.
Feel free to comment, and pls response to the 2 questions as well.
On the other hand it seems #Crossbreaks CB120 thread got new wind, and his mid drive might be out in august. Maybe we should all gather in on one project and focus all energy on one custom motor rather then spread us thin on various motors? He is doing a mid drive, that is not a problem for me. I don't what others feel?
Also I am not certain what kind of output is expected from the CB120 the CB 120 mid motor. Hopefully >12 kw peak.
In the meantime if anyone with skills and free time could do a prototype of ie a QS 205 or maybe the new mxus 55 Turbo? If maybe we can donate cash together so we take the cost of getting the stock motor, and the prototypee(?) don't have financial outlay for a motor? What you guys think?
1: Anyone with me to donate cash for a donor/stock motor so we can have a prototype?
2: Is there anyone with a lathe and skills that could do a prototype? Or better yet we could split the load between more then one person?
I don't think we need to outline every tiny details before we see what people think of these 2 questions, if we get positive response we can go further and hammer out the details, maybe one can mill the back iron, another do the custom axle, and one do the side covers? I know it can be risky to divide tasks like this, if one drops out we can be stuck'd with an uncomplete prototype. Yet in order to minimize the work load and burden from one person take the whole prototyping we might get more interest if we split up project into smaller parts.
Feel free to comment, and pls response to the 2 questions as well.
teslanv
1 MW
Samd, Andy Braidford and I have a great DD hub motor design. It's the perfect combination of light weight, power handling & heat shedding, and efficiency. The road block is that the initial batch would require a minimum order of 1000 motors to cover the cost of all the new parts development. Group sale anyone? :wink:
The BionX D-motor is definitely a step in the right direction.
110mOhm with 10.0kV and only 4kg
It should have at least above 90% peak ETA (the motor comparison spreadsheet says 92,5% but not confirmed).
here is the topic: https://endless-sphere.com/forums/viewtopic.php?f=30&t=90037&start=25#p1314656
and a link to Miles awesome DD design (but it is an inrunner):
https://endless-sphere.com/forums/viewtopic.php?f=30&t=57371&start=250#p863515
110mOhm with 10.0kV and only 4kg
It should have at least above 90% peak ETA (the motor comparison spreadsheet says 92,5% but not confirmed).
here is the topic: https://endless-sphere.com/forums/viewtopic.php?f=30&t=90037&start=25#p1314656
and a link to Miles awesome DD design (but it is an inrunner):
https://endless-sphere.com/forums/viewtopic.php?f=30&t=57371&start=250#p863515
What's the details of the design?teslanv said:
markz said:
I believe Cromotor just used QS205 motors, I believe they were using V1s, they then milled out some of the metal to lighten it, and rewound with thicker copper. That said, if you want to see some more custom motors, look at iulian207, he made, from scratch, a 45kW BLDC inrunner, and a 35kW BLDC outrunner. I believe he owns his own company that does it, or works in a machine shop of some sort. https://www.youtube.com/channel/UCKWHbUOPVhMy1DsFZlZWLMw
That said, there are so many different things that can be attempted to make the best motor you need.
1. Different soft magnetic materials for the stator laminations, in various thicknesses.
2. Multi-material stator laminations.
3. Powdered core for the stator, as each powder particulate is insulated via the bonding agent. Makes me wonder if a powdered core could handle the torque, or if it would just crack and/or disintegrate, lol. This might be able to be 3d printed for your prototype, then stamped for larger runs. Powdered cobalt-iron alloy stator?
4. Different strength magnets.
5. Different materials for the magnets (neodymium vs samarium-cobalt).
6. Different temperature ratings for the magnets.
7. Differently shaped magnets and stator poles.
8. Different numbers of poles, and thus different windings and wire gauges.
9. Different structural materials.
10. Different structure design.
11. Mechanical components like bearings, go ceramic? For the axle, steel? aluminum? titanium?
Oh, to have won the lottery and be able to experiment!
