I'm considering having a framebuilder replace the rear triangle on my vintage bike. I have a 1978 Trek 930 built with Columbus SP. The frame details can be found on this link;
I would like to lengthen the chainstays from 415mm to 425mm and ovalize the chainstays to improve tire clearance. I would also like to shorten the seatstays by about 1.2mm to provide a lower BB height.
I would also like to drop the BB height from 7.2mm to 8.0. My goal is to improve stability and reduce standover height by a small amount.
I realize that I will be tilting the entire front triangle counterclockwise (when viewing the drive side) by a small amount. Will this provide any unintended consequences or changes in handling or stability?