Gravel / Gravé / Gnarmac / Groad / ATB

GK nubbins don't add much traction tbf... well, at least not in loamy/mushy/muddy stuff. maybe add marginal traction in loose-packed fire road stuff

The way the chainstay is split is weird too.

But the flat mount on the fork looks nice on that. Flat crown would be prettier than unicrown, even though it might be heavier. A flat themed bike maybe. Could have flat tyres and everything.

Maybe the combination of Alfine Di2 and Gates forces a dumbass huge sprocket in which case the Gates can do one.

Hah yeah basically you need to totally immolate your frame design to make it work.

I think 19t is the smallest available gates cog but it depends on hub configuration. Some styles have a 24 or 28t minimum

Ah yeah, there we go ^^

This assembly is designed to be used with a 68mm BB and the Di2 specific
28t rear sprocket.

Yea the Di2 motor forces a larger 28t sprocket with an inboard offset that fucks up the chainline.

or beltline. Or something.

.

It's neat, but it's also where frames often break. See the 'chain waxing' thread for lengths I will go to to avoid putting belt drive on my commuter.

I'd be worried about that too. Though that bike is apparently made for a rather small and light person.

There are many, many good reasons to not put a belt drive on any kind of bike, including your commuter.

What are for a commuter bike? I currently run belt-drive-Nexus-8-bike and don't see any downsides for town riding and commuting.

cycling about chap has a belt drive and he seems generally pretty gear sensible so I thought that was interesting.

My favourite is that - even when freewheeling - there is enough tension in the belt to load the bearings in the drive side of the hub, prematurely wearing everything out.

Yeah, but I wanted a clean drivetrain so it crossed my mind. I quit that idea and I'm waiting on my https://www.youtube.com/watch?v=JhjuiOwE1Cw
cleaner.

Rob English's personal winter bike (which was the template for all the belt-driven Alfine bikes he's made since) had already been ridden 20000 miles by 2013.

If they were that bad I would have thought he would have found out by now?

I suspect Rob English knows how to tension his belt sympathetically and service his Alfine - a feat roughly 0% of users - and let’s face it few shops - can or are willing to do.

I have learnt that once the belt tension is correctly set, it does not require further tensioning (and indeed, the Gates CenterTrack belt doesn’t need to be run very tight at all). So the solution I went with on this bike is mainly about allowing entry for the belt, with the chainstay length built correctly for the belt length being used. The end of the chainstay acts as a socket, sliding over a matching stub on the dropout. A 6mm bolt then holds it all together. Should a chainstay length adjustment be required, then it is simple to just add shims inside the socket as needed.

I think that answers at least some of the questions raised above. I'd like to think that his customers are either clued-up or educated at time of delivery.

All very well, but it's still a fucking Alfine.

And?

Before @amey posts it

https://theradavist.com/2019/10/isen-workshop-all-season-gravel-bike-with-roval-terra-clx-wheels/

That rear dropout is ugly.

And you think on a custom bike you could avoid zip ties.

And no idea why the customer didnt build with hydro, weird call.

The holy trinity of Klampers + Chris King + WI ensures that John Probs will feature your bike on the Radavist.

I just gotta post those bikes with no pedals

ooof thats hot!

I have a well-founded hatred of the fuckers.