Mark Stonich wrote:
Don't get me wrong, I've no desire to move into exotic steels, Al, CF or
Ti. I built a 4130 frame with a 60" wb that weighs 4.5lbs. and is stiff
as granite against pedalling forces, yet nicely compliant vertically. An
Al frame with this much vertical flex would fail rather soon IMHO.

Kudos Mark on the great frame!

My attempt at a 66" LWB weighed in at a full 6 lbs. I have nowhere near
enough experience to start pushing wall thicknesses or shaping. I guess
I'll just keep being conservative until I can find a Mentor.

I agree, vertical compliance is a pretty high priority with these
babies. R2






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