The general consensus is one half a dozen of the other but the one thing that gets em riled up is too much height and too much length (or width!). For this reason dual ESC is favoured since that is the most used platform, hence the huge popularity of Unity.
So what we see here is 25mm-ish or more with additional cooling. The caps on their side would work and most do it that way, footprint notwithstanding.
A custom CNC’d heatsink is another way to offset height and this is what the other guys do typically, of course this ends up costing the consumer more nut yeah height would be the major concern. In saying that eFoil, eBike etc typically need one ESC and care little about that.
If you care about high voltage market adoption by esk8 it can’t be ignored in which case you need to research the high-amp VESC6 product range by these vendors (maybe include ZESC & Maytech as well)
In fact this may be a better approach we see little of the ESCs linked here or high voltage at all due to size & the horrible freaking cost.
In order to get a better idea of what the market demands some competitor analysis is required, so if we can exclude tiny stuff and anything built on top of VESC4 standards which is not the market for this offering (Cheap FOCer already takes care of that) then the competitors are
Flipsky (
)
FSESC75200 75V High Current 200A ESC Base On Vesc For E-Foil Fighting Robot Surfboard AGV Robot Arm
Size:100mmx61mmx30mm
https://flipsky.net/collections/electronic-products/products/flipsky-fsesc75200-75v-high-current-200a-esc-electronic-stakeboard-for-e-foil-fighting-robot-surfboard-agv-robot-arm
Maker-X
GO-FOC HI200/HI100 75V 200A
Size: 112*73*36 （Including heat sink
https://makerx-tech.com/collections/x-esc/products/go-foc-hi200-hi100-75v-200a-esc-based-on-vesc-accepting-order
LaCroix (in beta)
Stormcore 100D
126X70X24mm
Of course everybody is creaming themselves with the wish for a 100D, the 100S is essentially half of that or not much larger than a focbox OG
Trampa
VESC 75V 300A
141mm Length 82mm Width 18mm Height
VESC 100V 250A
141mm Length 82mm Width 18mm Height