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On the other hand: If the assembly is reliable-enough, then repair isn't normally something that needs to be pursued in the first place. Like Honda engines on
by ssl-3 5mo ago
On the other hand: If the assembly is reliable-enough, then repair isn't normally something that needs to be pursued in the first place.
Like Honda engines on their myriad pedestrian cars. I'm sure there's exceptions, but the engines tend to be ridiculously reliable. The rest of the car often fails (due to age and/or rot and/or deferred maintenance and/or crash) and leaves a very good engine behind.
Accordingly, junkyards are full of Honda engines that work fine.
Thus, there's very few people rebuilding them. They certainly can be rebuilt, but it usually just doesn't make financial sense to strip it all down and freshen everything up.
So when an engine does fail on an otherwise-working Honda daily-driver that is actually worth repairing, then the usual move is to swap in a used motor.
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So if it's reliable enough, and there's also critical mass, then it doesn't matter much if the BYD drivetrain unit has easily-repairable components.
- B1FF_PSUVM 5mo ago> pedestrian cars. That's an interesting turn of phrase ...
- ssl-3 5mo agoThanks. As the owner of a 14-year-old Honda that is equipped in the most lavish of trim options, I found great pleasure in selecting that particular subperlative.
- joe_mamba 5mo ago>So if it's reliable enough, and there's also critical mass, then it doesn't matter much if the BYD drivetrain unit has easily-repairable components. True, but swapping ICE engines was such an easy fix because of the modularity of powertrains that detached the messy hot rotating vibrating part(engine block) from the electronics and the rest. These new ultra compact EV units are like if the ECU, catalytic converters, and starter motor would be built inside the engine block.
- ssl-3 5mo agoHere's a teardown of a recent BYD rear drive unit, performed by Paul Turnbull -- lead engineer at Munro and Associates. https://www.youtube.com/watch?v=4LfDuyqmsts https://www.youtube.com/watch?v=4LfDuyqmsts In very broad strokes: It's just a BLDC motor, some driver components for those spinny-bits, plus some water cooling passages and gears. A surprising number of these parts are identified as having been provided by Borg Warner. That's nothing like what you describe at all.