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Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,073
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
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Agreed that if you use an off the shelf fork your design options are controlled by others to a degree. I don't think the headtube has a big impact on the frame's stiffness as it's already typically the largest in diameter, has the thickest wall and is the shortest tube in the main frame. I agree in choosing a ENG threaded BB shell. Do know that there are thinner/lighter and thicker/heavier choices here. I tend to discount the stays contribution to frame stiffness as they are part of a triangulated structure. Still going somewhat bigger diameter isn't wrong as long as the components fit (like chain ring or tire clearances). Andy
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AndrewRStewart