Smooth Factor of lighter rim brake steel forks

[Deacon Patrick]

Today’s ride, like many of mine, is roughly equal parts paved, dirt, and trail. Compass tires cush the whole ride, but the front fork absorbs a lot of the bigger bumps on dirt and trail. I’ve noticed this for a while, but on the (now really bad) wash board dirt road sections, the fork is compliant and absorbing. This led me to ponder a number of questions I toss out to see where they go...

— Would a stiffer (because they have to be) disk brake fork absorb as much?
— How much of the “required” mindset for shock absorption on gravel and MTB bikes is the result of disk brakes requiring a stiffer fork? (I suspect marketing and “latest gen tech” mentality is likely the biggest factor).

With abandon,
Patrick

www.CredoFamily.org
www.MindYourHeadCoop.org

[Lum Gim Fong]

Wait a second...
“Compliant” ?!?!?! And in another thread today: “power transfer”?!?!?
What are these strange words coming out of them thar hills!!! 😀

[Deacon Patrick]

Rare air and a thesarus. Grin.

With abandon,
Patrick

[Philip Williamson]

Probably a stiffer disc fork would have to be longer to give the same axle movement, to take the edge off bumps. I doubt any rigid fork can absorb the shocks that a shock fork can. In fact, that seems self-evident. 

Not a mathematician or an engineer. 

Philip

Santa Rosa today, Redlands tomorrow.

[Patrick Moore]

Grant has stated, long ago if not often, that fat/fattish tires and handlbars absorb so much bump that forks are largely irrelevant in doing so. I know Jan believes that thin-blade, heavily raked forks do a great deal to absorb bumps. I'd be curious to know more about this in general, and in particular, about any putatively bump-absorbing fork that is strong enough to use with a disc brake. Not interested in shock forks, me.

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Auditis an me ludit amabilis insania?

[Nick Payne]

There was a long discussion on this topic on the 650b forum: https://groups.google.com/d/topic/650b/ymSxPDCPpKs/discussion

There's also the Lauf Grit fork, if you can stomach the looks: http://www.laufforks.com/grit/. It gets good ride reports.

Nick