exactly the point, what is the app.
a hi-strung finicky super powered racer isn't the always required or sometimes even best suited for the task at hand.
hub motors already have the huge hurdle of there being no easy path to shed heat.
adding another heat source with an internal controller doesn't help matters, i get that.
but there's a threshold power level below which the heat doesn't build up to a critical point.
ebike manufacturers unfortunately r restricted by law what they're allowed to sell.
Eplus is already pushing past that limit somewhat with a 1000W 30 mph version of their motor which they can legitimately justify to regulators they're catering to markets in those states (Calif being the largest) where that level of performance is legally permitted.
so given this narrow specification, with proper care in the design wrt thermal management a reliable plug & play system can be engineered that's targeted for the consumer market.
the suggestion that the bulk of integrated hub motors end up in a land fill is a blatant lie.
just because pushing limits dominates the conversation on here don't mean that speaks for everyone.
a clean, integrated 30 mph ebike that can keep up with road traffic with minimal exposed wiring would quite easily meet the day to day demands to satisfy the majority of potential ebike buyers not just the grannies, if the law were to allow even that much of an increase.
having said that, i'm gonna go out on a limb to make a prediction taking it one step further.
as we've seen with doctorbass & others they've taken the first baby steps by integrating relays under the hood because of the large number of wires involved to route out the axle.
in my view it's only natural that the relays will be supplanted by internal fets at first & then ultimately why not the whole controller,
even when it comes to hi-power setups.
as people begin to bump up against the limits of trying to push huge power down a long transmission line it will become obvious the controller demands to be in close proximity to it's load.
it's a balancing act, trading-off tolerating the excess heat in favour of reducing the nightmare of stray inductance.
i've worked on circuit boards that were 2.5 inches wide by six feet long good for 130 degrees or more designed to operate at the bottom of a
rat hole.
so there's precedent that circuits can be made to function under those kind of conditions.
i expect designers to make the choice that we'll be seeing more integrated controllers rather than fewer.
. I kinda know a little about the care, feeding, and proper application of nicads...
