Joined: Feb 2012
Posts: 19,344
Likes: 5,461
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
OK, I'll play. Not that any of my bikes are anywhere "normal" in their layouts. I have 3 unpainted frames and forks, all steel and fillet brazed. None were designed to be light weight with 0.6 and o.5 mid section walls in the main tubes.
Brand Stewart Stewart Stewart
Description #750 #150 #550
Urban Flat Bar Dual Rigid MtB Gravel
Frame 4.5lbs 4.7lbs 4.2lbs
Fork 2.3lbs 2.5lbs 2.1lbs
Size (C-C) 45cm 42cm 46cm
Wheel 650x48 650x65 650x42
The lightest frame I have made was just over 3.25lbs, Columbus KL, minimal lugs and in a small size. That frame was classic tube diameters and flexed a lot, climbed like a beast but descended like crap as it shimmied badly. Were I to replicate the same goal today and used modern dimensions I would expect about 3.3lbs. for a truly rideable frame, and it would handle better than my long gone KL frame. Andy
Sorry for the confusing table of data. My attempts to align the columns isn't working.
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AndrewRStewart
Last edited by Andrew R Stewart; 03-06-26 at 09:57 AM.