Richie and Peg, are using the tube set they helped develop for Columbus. Here is the specs: Spirit for Lugs Tubeset Long butts for Lugs
DT 31.8mm x .75/.45/.75 x 635 Butts = 120mm/120mm transitions = 40mm/40mm TT 28.6mm x .75/.45/.75 x 600 Butts = 100mm/100mm transitions = 40mm/40mm ST 28.6mm x 8/6 x 635 Single butt = 150mm transition = 40mm CS 24mm(30/16) Oval x .8/.6 prebutted x 425 = 290mm taper SS 16mm ST x 0.7 x 560 = 300mm taper This should yield a frame less than 4-lbs. On Aug 15, 2009, at 9:42 AM, Aaron Thomas wrote: > > 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? > > 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. > > James Valiensi, P.E. C.E.M. Northridge, CA USA M.818.585.1796 [email protected] --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
