Yeah I agree when it comes to motors: heavy is good
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Can confirm, these look beautiful! Would love to try and get a group buy going or something eventually if enough people show interest!
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what king of bolt do you use ? is it a shoulder screw ? 8mm OD ?
Very nice work !!!
Is the stator simply slid onto the hardened axle ? does it need insulation ?
Peace
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From his previous work fliess has also done full potting of his motors and more insulation canāt harm !
Hey @Vanarian, itās better to see it once. Is there any thread where you post your experiments in photos?
@nikoumouk, thanks! What I did is just cloning the moving part of Atlas truck, so that I can use my 12mm axle. I didnāt touch the rest of the truck with kingpin.
What kind of insulation do you mean? There is an aluminium inner part of a stator, which perfectly fits to the axle. Donāt make things more difficult, than they actually are 
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Thatās a yes and no! I regularly take pictures of it but didnāt open my own threads on this forum yet.
Got to present the cooling and solderless as well as my own builds! Gonna open a ālab threadā for the first two, Iāll keep you updated.
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This is so awesome!!! I really want to try this however I have a few questions.
- How is the 12mm axle attached to the aluminum hanger? Magic glue and large set screw?
- Does the stator of the 63mm sk3 motor just slip onto the 12mm hanger? What would be a good glue to use?
- What kind/grade of aluminum are you using?
If you could help me I would really appreciate it. Thanks you!
@jrpwit, thanks man! Why wouldnāt I help, this forum is for help, or? 
- just a keyway
- just a keyway
- AlCuMgPb
No glue. That would be the worst I could do. Okay, maybe after 10tkm of testing you can just use a glue 
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Really no glue? I though lots of motors use glue to secure the stator. Where did you drill/cut the keyways?
Would I just slide this portion of the motor onto the 12mm axel and then somehow secure it with a keyways?
Also could you explain how you made the keyway on the axel securing it to the hanger?
Sorry for all the questions and hope Iām not being confusing. Thank you!
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This is the thread I am thinking of when I am referring to gluing the stator
Last question I promiseš When you got the motors what wiring configuration were they in wye or delta?
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Whats your outer diameter of your hub connectors? I am building something similar so I wonder what is the outer diameter which fits in to the hub of the wheel core.
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@jrpwit, hey. Sorry for the late reply, but weekend was over and had to go and work to earn some money for Fliess4 
Really any drop of glue. I cut the keyway on axle with https://www.google.de/search?q=chop+saw. Once you get a keyway on axle, you can insert an axle inside a stator and drill the opposite side of a keyway. Initially I wanted to avoid such a construction, because I was afraid to weaken an axle by any cuts, but this is not a cross cut to be worried. Exactly the same you can do to secure an axle to the hanger. No magic, everything is simple. The more simple, the more reliable
Initially I tried to find some photos for you, because 1 photo is better than many words, but unfortunately I didnāt find any. Good luck with your hubs
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Does it includes the tolerance ? Is it a tight fit?
@Trans-amers, hey. I wouldnāt talk that much about tolerances when you have to deal with piece of not always perfectly balanced plastic. I started from 40mm and then decreased to ~39,5mm to make it not that tight.
By that do you mean you end up milling into 39.5mm before putting it into the CNC machine?
Very nice build. I am always happy to see your builds and your progress you made from Fliess 1 to Fliess 3. Your builds truly deserve the ātitleā DIY. 
So much detail everywhere. Hopefully someday I am near Frankfurt and can gaze that beauty in real life.
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