Disc forks

[KM2]

Does anyone know of a curved disc fork, 1 1/8”, about 40 cm or slightly less, axle to crown?
Steel or carbon with comfort built in….
Must be curved.

700c

[rjb]

It would help to know what wheel size your would need.

[PH]

Assuming it's a pretty standard offset and that 400mm axle to crown means 700c/650B, the Spa Elan steel fork fits the bill (Though it's not in stock) or there's a choice from Surly. I don't know about carbon forks.
Not sure you're going to get much comfort built in, or that the shape will contribute to that, wide tyres ought to compensate for that.

[Valbrona]

Fork offset is fork offset, whether achieved by curved or straight legs.

Whiskey Parts? Dedaccai? 3T?

[PH]

Fork offset is fork offset, whether achieved by curved or straight legs.

Yes, but they haven't said why they prefer curves, it might be purely aesthetics.

[LollyKat]

Theoretically a curved steel fork is more comfortable than a straight one?

[NickJP]

Soma? They make a couple:

Wolverine fork: https://www.somafab.com/archives/produc ... -wolverine

Cyclocross fork: https://www.somafab.com/archives/produc ... cross-fork

[KM2]

It is a comfort thing. Vibration should be kept as far away from the handlebars as possible, so the horizontal component of the fork should be kept as low as possible.

That’s not what I requested though, I do know what I want, just if anyone has any experience of the design required, please let me know.

[PH]

Theoretically a curved steel fork is more comfortable than a straight one?

A lot of people think so, though not even framebuilders can agree. By the time you've made it stiff enough to handle the forces of a disk brake it becomes irrelevant.

[jb]

My Genesis Equilibrium disc has a steel curved fork for disk brakes with a proper brazed crown & it looks great. They made them before carbon fibre could be trusted for the job.
Doubt you can get them off Genesis now but a frame builder might make some. they are quite a bit sturdier than a standard fork so obtaining the tubes might be a problem.

[KM2]

Do you think a 531 fork, old type70’s, could be modified?
Or is it too flexible?

[KM2]

What I’m doing is winterising a bike with rim brakes, just replacing the front brake as it’s the most used.
Save on rims.

[jb]

I wouldn't like to say, as I said mine feel heavier and stiffer than my Dawes forks although they look the same.

[531colin]

Theoretically a curved steel fork is more comfortable than a straight one?

A lot of people think so, though not even framebuilders can agree. By the time you've made it stiff enough to handle the forces of a disk brake it becomes irrelevant.

When the front wheel goes over a bump, there is an upward force on the axle, but very little leverage to flex the fork at the bend, which is what is alleged to happen.
Reynolds 631 forks are pretty comfortable (although not recommended for disc brakes) and the taper starts just below the canti studs.

[531colin]

Reynolds fork blades suitable for disc brake....https://www.torchandfile.com/REYNOLDS-E ... _1142.html....thats not necessarily complete, or up to date, just what I found with a quick Google.
No shortage of (Taiwanese?) cromo as used by Spa....Genesis....Surly....