Just a thesis, but:
Just a thesis, but:
What was really funny was that a few years later I was typing up inventory lists that went out to cable yards for the phone company - on a Model 43 Teletype using a paper punch tape and a 300 baud modem. :^)
For years I've considered the value-for-dollar benefit of my Swiss Army pocket knife to be perhaps the highest of anything I own. But today, I'd have to say my Moto G5 Plus trumps it.
So I guess my Swiss Army knife shouldn't have a can opener, bottle opener, three screw drivers, awl, toothpick or tweezers? A knife should be a knife? (Yeah - I understand you were being somewhat tongue in cheek. But I'm guessing only somewhat.)
Sorry for the OT, but just for a moment, I was reminded of this:
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“Far out in the uncharted backwaters of the unfashionable end of the western spiral arm of the Galaxy lies a small unregarded yellow sun. Orbiting this at a distance of roughly ninety-two million miles is an utterly insignificant little blue green planet whose ape-descended life forms are so amazingly primitive that they still think digital watches are a pretty neat idea.”
Sure, you can still ahve a slotted frame mount, but just like a bike axle / dropout it doesn't have to resist torque.
Simpler...no...and depending on thicknesses and material strengths and precision of fit, axle flats can support quite a lot of torque. It's not so much the watts as the Nm. You can have several kW and very little torque, if the RPM is high. Torque conversion can happen farther downstream (a number of middrives do this with RC motors).I really don't like the flats either, but I thought for a thousand watts of power they might do. And I don't have any better,
simpler ideas at the moment.
As you note, it's actually not the bearing ID that limits the axle size--it's the other components that have to go over the axle. The bearing ID can be MUCH larger, with a spacer ring between the bearing and the axle.Axels can only be as large as the bearing ID diameter. In fact the right drive side has to be less than the drive cog system,
that slides over it, around 28mm.
How substantial is a freehub body and cassette splines? Not very, but it can take a fair bit of torque. True that this is partly because of the width of the body and cassette, and you wouldn't have that much width to work with most likely. But a bit deeper splines would make up for that in surface area.A splined torque arm system would work on the left side nicely, but there isn't always room on the right side for anything substantial.
Perhaps, but then the axle could experience twisting forces along it's lenght, which is what broke at least one of the axles on my trike (where the flats on one side didnt' fit as precisely, so that end of the axle all the way to the start of the flats of the other end was able to twist, while the flats that were precisely clamped couldn't, and eventually that broke the axle at that point.).Perhaps one side would be enough?
No, they don't have to go *through* the axle.The wires have to go through the axle one way or another,