What are the criteria that people feel is important to address for tailored made e-bike hub motor? (if we can make a hub happen maybe next step is mid motor?)
More powerful or at least able to go full power for longer before saturation or overheating so cooling options
Higher quality parts - magnets, adhesive, more copper fill, thicker stronger and lighter axle, heck even higher rated halls or more attention to placement.
Let the ideas flow, first we got to gather what seems to be consensus of what we wish to change. Then we need to find a manufacturer that is willing to look into our requests and are willing to go an extra mile to make an awesome product. In the end, if product turns out to be as good as we hope the manufacturer should be able to sell that motor also to other demanding customers. So we will need to convince manufacturer that this custom, hi end motor will be a win for them as a company and their bottom line as well.
If we can drum up enough interest with a group buy or at least do one big order together this could actually happen.
How do we make a hub motor lighter? Madin88 had some very insightful thoughts on that. And I quote:
madin88 wrote:sidecovers with spoke flange (instead of heavy iron ring) safes about 1-1,5kg on common 3kW motors
- magnets with gap between (will not make performance worse)
- higher pole count (means that less iron is needed for the stator core and the iron ring for the magnet return)
- thinner lams (for more efficiency at high rpm, and to counter against the higher drag the higher pole count brings along)
- titanium axle
To that I would like to add, back iron ring shaved down as much as possible to reduce weight as well as look into carbon fiber side covers with spoke flanges. Maybe carbon fiber is not possible, or maybe we can source special made carbon covers from third party? (east gem got lot of lips here on ES lately?)
Room for liquid cooling
Ready rust threated and internally painted flat mat black to aid heat removal
Pre drilled hole for FF in one of the disc brake holes.
Ventilation hole with breather/membrane to equalize pressure
Swap magnets to higher rated ones
Use adhesive with higher temperature tolerance
What would you like to see in a custom tuned up ES edition motor? When we have a rough idea, an outcast we can contact several manufacturers to see if one of them will play ball. Maybe they can not meet us on all of our demands but as long as we are met on the most important once we should be golden. And if the motor turns out light enough maybe we can also have a version for 20 mm thru axle for double power 2 wd