Originally Posted by
imryanmac
local shop has the seat post mount and it's only $12. I will use this initially. check it's rigidity and determine if it's safe.
if it's not looking good, I'll go with the tubus stay mounting clamps.
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Strength and rigidity is not the issue, fit is. Depending on the size of the bike, one of two options may fit better. For example, on a very small frame, the mounting hardware may not extend far enough for the seatpost mount to work. Conversely, on a big bike, you might not be able to get the rack level when attaching the mounting hardware to the seat stays. Sometimes too, trying to attach the rack to the seatstays interferes with the brake cable or caliper arms.