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Gotcha. Thanks. But... (And this is just for curiosity) how come their rear hubs have a bolt-in kit - how does that work?
Perhaps the better question would be: are there any front disc hubs meeting this spec off the peg, other than surly ultra new?
Edit: this isn't anything to do with my previous question about doing this on rear hubs... Just a coincidence :)
Cupcakes-
how come their rear hubs have a bolt-in kit - how does that work?
Different kind of assembly, the bolts pass through the end caps and thread into the main axle.
are there any front disc hubs meeting this spec off the peg, other than surly ultra new?
Not OTP, but Shimano HB-M525/755/756 lend themselves well to conversion, as does anything else with a steel hollow axle which runs uninterrupted from one dropout to the other. It's cheap and easy to run an M6 hand tap into the end of such an axle, they are a bit over the proper pilot bore for M6 but there's enough metal there to make for a safe connection. Check the EV PDF for other Shimano hubs, some of the newer ones have big tubes in the middle with separate end caps. DT hubs are in two classes "inserted adapter" and "pressed-on adapter". The former can probably be converted, the latter can't. You need to exercise a bit more caution with aluminium axles, I probably wouldn't risk it if your object in making them bolt-on is to try to mitigate the problem of QR disc hubs, because you won't actually be able safely to get more clamping force in the overbore threads than a good QR already provides.
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Someone’s gotten a bit carried away with the machining but,
https://www.tensile.net/tensile-2624-trials-specific-disc-hubs.html
gbj_tester
M_V
Hope? Nope. Anything with push-on end caps won't work, because they rely on the skewer or through bolt to hold everything together. Anything with threaded on ends caps and hex broached in the QR bore for disassembly won't work because the hex takes away too much of the material you'd want to tap to take the mounting bolts.