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#11
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4130 Chromoly vs. Reynolds 853 Steel
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#12
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4130 Chromoly vs. Reynolds 853 Steel
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 -- -------------------------- Posted via cyclingforums.com http://www.cyclingforums.com |
#13
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4130 Chromoly vs. Reynolds 853 Steel
R2D2 wrote in message news
This unique air hardening property of Reynolds 853 provides additional stiffness through reduced micro yielding at the joints, allowing stiffer frames with excellent fatigue strength (when compared to standard chrome molybdenum) and excellent ride quality." Well that settles it then. Alloying and heat treatment CAN alter the modulous of elasticity of steel. This sentence, written by some advertizing flack, ovbiously disproves the results of more than 200 years of metallurgical science and many, many thousands of tests. Just think of all the textbooks that will have to be re-written. The implications for spring design alone are enormous. |
#14
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4130 Chromoly vs. Reynolds 853 Steel
Point well made guys. Thanks for persevering (darn advertising hacks!)
R2 -- -------------------------- Posted via cyclingforums.com http://www.cyclingforums.com |
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