> 753 was a MATERIAL, not a tube set. Richard, That part I understood - but I thought that 753 was a harder material than 531, thus allowing the thickness of the tube walls to be made thinner and lighter. Is that not the case?
> The lightest, thinnest 531 was similar > to its 753 counterpart. But wouldn't you prefer to use the 753 tubing for larger frames due to its superior strength of the material? None of this is meant as a challenge - I'm trying to understand the whole story and why Reynolds bothered to develop 753. So, to get back to the original question, what is 753R? Best regards, Fred Rednor - Arlington, Virginia
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