140mm rear hub

[multitool]

because it is more likely to be used it is less likely to seize up.

Grease the threads once in a blue moon. Problem solved.

If you have ever been shopping for TAs you will know that there are many different screw threads in use; not with my design, thus greatly simplifying matters

That isn't a design issue, it's a standards issue, and one which is rapidly being solved with Sram UDH.

In my design, the axle is loaded in axial compression, so swells slightly when tightened. In the extant TA design, the exact opposite occurs, which makes a mockery of any precision machining there might be. I don't think that you will find many other examples of Al bolt shanks being used as precision bearing locations; most people have more sense than to design something so stupid. No surprise then, when users of TA hub dynamos report that stopping precession (and consequent wire breakage) entirely is virtually impossible.

To put it another way, TAs as they exist today can't possibly work as intended and they don't.

As a longterm TA hub dynamo user, this is something I've yet to encounter. Not saying it will never happen, but it hasn't yet. Nor have I heard of anyone encountering issues.

I daresay should your design ever reach wide usage, somebody would break one, and somewhere on a cycling forum someone would be advancing their solution

[Brucey]

...

In my design, the rubber parts could be easily replaced using rubber washers cut from old inner tube.

Ah. So your proposed "solution" to a non-problem is just a bodge rather than any sort of precision made new standard, reproducible ad infinitum by frame manufacturers...?....

To put it another way, TAs as they exist today can't possibly work as intended and they don't.

Mine seem to have managed fine over thousands of miles of trouble free riding and racing...

you presumably have not used a TA hub dynamo so you won't necessarily have noticed axle precession or have suffered ill effects from it.

The idea of using washers cut from old inner tube would be to allow easy running repairs. As usual you have jumped to your own (wrong) conclusions, couched in rather pejorative terms.

[Brucey]

.....As a longterm TA hub dynamo user, this is something I've yet to encounter....

by contrast, yours is possibly the only long term use that I have encountered that hasn't obviously suffered ill effects from precession. This possibly indicates that your setup/usage differs from the usual in some way.....