Electronic & Hydraulic Shifting (Di2, Ui2, customisations)

OK, so expensive but not particularly dangerous failure.

Mostly just annoying - it meant I just missed out on doing Ride London in sub 4.5 hours. Bastard thing.

Overheard in waitrose ;)

How strong is that stuff? Looks like it will snap just outside the bolts after a few hours of UK roads.

EDIT: I see, proto.

Wouldn't you flip that junction? Less cables hanging out.

Not very, it would snap if I even did the bolts up.

Done 3 versions, one with it flipped, and one with it flipped and much further back.

God damn.... them Wahoo things are big ol bastards, ain’t they!

The faceplate stem bolts are only done up to 4 or 5Nm, which would result in very little compressive load on the mount.

5Nm on a properly lubricated M5 bolt is about 5000N bolt tension. You don't want any plastic in that load path. If it doesn't explode, it will creep, and if doesn't creep it will be insufficiently stiff and then you've effectively got a spring under the bolt head which compresses and loosens the grip on the bars every time the load increases. Even if the bars don't slip, the pressure on the unloaded side drops to zero and the bar/stem interface frets, creating the initiation point for a fatigue crack.

M5×0.8 is very close in size to the #10-32TPI Tom Lipton tests here:
https://www.youtube.com/watch?v=QC6QciSh6gw

What about that carbon infused stuff? Will that save Neil's teeth from getting smashed again?

I can't work out how to effectively simulate bolt tension in f360. It throws a shit fit every time I do the pre checks in fea results section.

That's not the "screw challenge" I was googling...

What about that carbon infused stuff?

Fibre filled is better than plain polymer, but I still wouldn't use it as effectively a very tall washer under my stem bolts. There's a good reason why all the plastic Garmin mounts clamp around the bar, and it's not just that it allows inclination adjustment.

I can't work out how to effectively simulate bolt tension in f360

Have you tried applying an area load on the face that's under the bolt head? You probably have to create a feature in the solid model to make that face stand in isolation, although a separate washer body would work and I bet there's a hack possible using Patch to create a zero thickness body to constrain the area over which you apply the load.

Ok, what about ally, with a bolt on fitting for the mount, a la bar fly?

what about ally

Solves the materials issue, but not the problem of having to customise the mount for each different stem to match the bolt centres and inclination. Basically, tilquist was going full #tartmode, not designing something which could be a business proposition.

This is not a business proposition, this is being a wanker with something no one else has.

..... to make up how slow i am.

Can’t you press a small tube in the 3D-print to act as the spacer? 4mm ID 5mm OD or somesuch?

Oh M5 bolts? Either way, tube shouldn’t need to be too thick?

a spin on something like this?

I wonder if this will work with the etap road shifters:

wonder if this will work with the etap road shifters

With Grovel bikes being so hot right now, it would be an astonishing own goal if it didn't

We in the industry prefer 'groad'.

It's interesting how marginalised sram have become in the UK without a properly functioning distribution network, as an aside.