On Aug 15, 2009, at 11:42 AM, Aaron Thomas wrote:
> On Aug 14, 8:15 pm, Tim McNamara <[email protected]> wrote: >> On Aug 14, 2009, at 7:52 PM, Aaron Thomas wrote: >> >>> If they succeed in getting the final build below 20 lbs, it would go >>> some way toward demonstrating that lugged steel and lightweight >>> bikes >>> are not mutually exclusive categories, >> >> My steel 60 mg Ritchey road bike weighed under 20 lbs with a 1999 >> Campy Chorus group back in my racing days. I still use it a lot, >> although with different parts it weighs about 21 lbs. Although I >> suspect that TR spec'd the tubes a bit lighter than Grant is >> comfortable with, I've put at least 25,000 miles on that bike in the >> past 10 years and have weighed 200-220 lbs. Waterford also makes >> some pretty light bikes out of steel with lugs. The lightest bike in >> our house right now is my wife's Riv-era Heron, which is right around >> 20 lbs dry (but is a 53 cm frame). >> >> Unfortunately the public (read: bike magazine) viewpoint is that a >> pound of steel is heavier than a pound of aluminum, a pound of >> titanium or a pound of carbon fiber. > Just out of curiosity, what gauge tubing as used in your old Ritchey? > And would likely be used by today's makers of lightweight steel race > bikes, such as Richard Sachs and Dario Pegoretti? Is it even thinner > than the tubing spec'd for the Roadeo? No idea since Ritchey had custom specs for his tubing, which was Tange Prestige at the time (this frame is nearly 15 years old). Tange does still have Prestige specs are here: http://www.tange-design.com/tange_2007/tubes.htm The Ritchey tubing probably had different shaped butting and a longer, thinner center section that standard Prestige. All of his bikes at that times were fillet brazed (top of the line) or TIG welded (everything else). IIRC Ritchey would braze the downtube/seat tube joint on the TIG bikes and was reputed to do that personally with every frame. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
