Current is recommended to be limited to 40a, the wires are this thin because of the Wye winding, basically it is half the amount of strands that is used in a normal motor because 3x phase wires are terminated together.
I ended up putting a pair of $20 wheels on a drill press and cored them. They were a snug fit - I had to press them on. Since I didnāt cut 4.5mm Arcs, it rides a little lumpy.
In the latests Enertion mail, I saw a hub motor design that looked like a hybrid between the Hummie and Jacobās hubs. Interestingly enough, its spot on with the design I just filed a patent on so weāll see how things develop if/when the patent gets awarded. #40mmStator
Shouldnāt that mean that your invention is therefor not unique and new and you will not be awarded a patent for it.
Not true. Prior art is one thing, however innovations on prior are what you can patent as separate inventions or as additions to art. The ratios of certain component sizes within a design (for example) also constitute as patentable material.
See the Stealth Boards original Hub motor patent from Colorado in 2013 (filed a few years before Jacob/Hummie worked on their designs). They all share a lot of features, but a unique. Intellectual Property patents are designed to preserve prior and future art. As we have probably read on these forums, China companies weāve worked with disregard ownership laws (something both Hummie and Jacob have suffered from).
Patent filing and lawyers are pretty expensive and there are an excessive number of patent fraud schemes out there, so do research before putting down any money. Also, getting the patent and filing it are two separate things. Think about how many different selfies sticks there are out there (for example).
EDIT: I also paid for a copy of Jacobs early designs for reference and comparison. It was different from all others I had seen before [but performance of windings and magnets aside, physically only made the motor quieter].
Wow. I canāt find the 2013 Colorado motor or the enertion. Can u link us?
there are two common types of patents
- Utility patents may be granted to anyone who invents or discovers any new and useful process, machine, article of manufacture, or composition of matter, or any new and useful improvement thereof;
- Design patents may be granted to anyone who invents a new, original, and ornamental design for an article of manufacture
I assume you have submitted an application for a ādesign patentā - I doubt you can get a utility patent on an electric skateboard hub motor, unless of course you invented something new. If you have a new invention congratulations.
No fanfare with your new hubmotor? Are you still testing it or is the fanfare coming later onloop
you can count on it
Hi jacob ,
Could you please update mew on order 770 4WD ?
- Jacob Griffin-Bloy, Tuesday, 16 August 2016 at 6:35:40 PM When the parcel will be shipped and what is the tracking ID ?
Hi @jacobbloy, just looking to buy a few new bullet connectors and I was wondering what size you have used on the hubs? The diameter of the silicon wires coming off the hubs is 3mm, but the bullet connectors look like they are 4mm or 5mm maybe? Cheers.
3mm wires? Mine are way thinner and can still be pinched to like 1mm or so
Iāll check mine again - can you pinch them or are they āfilledā with wire?
I can pinch them down to what feels like a smaller diameter as well.
Will be interesting to see if they can handle 40A long term.
It may be fine. The motor isnāt directly eating up battery power (due to esc magic), so the motor wires donāt have to be as thick as the the battery wires.
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Is there any word on the new urethane for these hub motors? I still have my motors sitting in the box as I donāt want to mess them up on the first run urethane.
Not sure how to go about fixing this, but the the two hex screw to hold the motor in place is broken. I have used threadlocker for the screw on the truck, so Iām not sure why this happened.
Any updates? These motors are the last part I need.
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Same ! Last part of my build i still need 