Originally Posted by
dddd
Simply wedging the two sides apart always results in one side yielding more than the other, since the frame tubes aren't identical in terms of dimensions, processing and heat exposure history during frame assembly. So you end up with a widened frame that positions the rear wheel off-center, with the critical frame alignment being lost in the process.
Especially true when the drive side chain stay is indented for chainring and/or tire clearance.
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