Don, That is consistent with what I have also: My full chrome 23" Carlton (frame only) weighs in at 2705.6 g (5.96 lbs) which is 493.1 g (1.09 lb) heavier than the same size PX-10 and 733.8 g (1.62 lb) more than the same size Masi 3V.
To be fair, only the PX-10 was wearing paint or decals.
Can anyone tell me what tubing the Carlton is likely to have been made of?
Thanks,
Jon M. Crate FAI Materials Testing Laboratory Marietta, Georgia USA
-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of donald gillies Sent: Wednesday, June 09, 2010 10:28 PM To: classicrendezvous@bikelist.org Subject: Re: [CR] 60's Raleigh Carlton Chrome Frame?
I have several ebay and/or craigslist picture-sets of the early 1960's Raleigh Gran Sport, with "High-Tensile" steel tubing and indeed, it has wrapover stays.
I should say, however, that this may not be an especially lightweight frame. Although I've never owned one, the wrapover bikes used a standard one-piece casting for the wrapover part, because weight didn't matter and it was faster that way. Such Frame/Fork combinations generally weighed about 8 lbs (vs. 6.25 lbs for a reynolds 531 frameset.)
So if this bike has an 8-lbs frame, it would be more or less equivalent to a 1970's Raleigh Grand Prix. The all-chrome carlton cobra was similar.
- Don Gillies
San Diego, CA, USA