Any question answered...

Don’t know about with guards but my Day One comfortably fits 700x40 with generous mud clearance. Keep meaning to see if I can squeeze in larger.
I tried 650x47 (wtb senderos) in my CDF and they only just fit - would be the same in a Day One as it’s the same frame.

Day one is fun, fixed with big tyres. I’ve got OG V2s on at the moment and it’s nice and cruisey.

What size is it? Deffo interested.

Damn, now I'm tempted to replace my Pompino with a Day One. I didn't realise the tyre clearance was so much bigger!

58cm

Is the flyer frame the same as the day one? Just SS vs hub gear?

Far too big for my short arse :(

I'm fairly sure they do SS and hub versions of the Day One. I think the difference is that the Flyer is more road based and the Day One is more gravel-y. Might be wrong though.

No worries, any questions more generally just shout. Running SKS Edge mudguards which are doing the job.

Is this https://www.westbrookcycles.co.uk/ultra_new_mountain_disc_fixed_gear_rear_hub-8057
And the even more expensive paul version, my only option for a fixed disc hub?

Could one of these adapters allow you to do that with any flip flop hub?

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Hadn’t seen those! And I guess the thread is in the right direction, as it’s be tightening when braking right? No idea what the alignment would be like tho.

Yeah the thread would be in the correct direction. I've never tested one of these out though, alignment might be tricky as you say.

Have a look at tartybikes.

I did the conversion with an adapter with a surly new ultra hub for double 6 bolt interface.
Used the threaded side for the rear brake because it's more fo sho then real braking because it's zee law in Zjermany to have two independent brakes.
And yes, the threading goes the right way for the braking forces.
The rotor does go "out" quite a lot though, it was a bit tricky to get the brake aligned.

Somebody on here just got a double fixed 6 bolt hub made by mack. It was much cheaper then Paul, but he needed a much more exotic 148mm hub.

Aye they popped up on the search but couldn't see anything. Niche selection!

Ha, proper niche! I had actually searched for double disc hub knowing that it likely didn't exist - but funny to know it wasn't a totally unique line of enquiry.

I imagine I would end up with the surly hub, but figured it was worth looking around for as the hubs are £120!

I’ve wondered if just replacing the pawl springs with a wedge would lock the freewheel well enough to run it as a fixed hub. I have a spare disc 26er wheel. I want a disc 26er fixed wheel. I really should give it a try or not.

https://www.lfgss.com/conversations/376200/#comment17011681

Seen this?

Good for a freewheel but no lockring threads as those trials lot put a freewheel on the cranks if they use a fixed cog at the hub.

I have a day off work with my bike in Switzerland coming up. I’m based in Basel but willing to travel. Where should I head to? Last year I went to Andermatt and did 3 mountains there.

Someone suggested La planche de belles fils but not so sure

@andyp ?

If it were me, and it depends on the weather, I'd go to Interlaken and do the Grosse Scheidegg.

This looks like a good candidate from tartybikes doesn't it?
The flanges are also quite in similar distance from the centre, and the freewheel instead of fixed thread should give you more room to align the adapter properly for the rear brake.

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Looks like a bit of a battleship. But maybe that would do me good after snapping a set of forks unexpectedly.

freewheel instead of fixed thread should give you more room to align the adapter properly for the rear brake

Why even flip it around? If you have a disc brake on the rear wheel, it's not really a problem to have the drive sprocket in suicide mode. I think on balance I'd take a suicide hub with a proper 6-bolt attachment for the brake rotor over a 6-bolt proper fixed drive but a brake hanging by a thread