just keep riding
Join Date: Feb 2005
Location: Milledgeville, Georgia
Posts: 13,560
Bikes: 2018 Black Mountain Cycles MCD,2017 Advocate Cycles Seldom Seen Drop Bar, 2017 Niner Jet 9 Alloy, 2015 Zukas custom road, 2003 KHS Milano Tandem, 1986 Nishiki Cadence rigid MTB, 1980ish Fuji S-12S
Mentioned: 15 Post(s)
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I think the biggest risk to your bike on the rough roads is to the wheels. If you have decently strong wheels and reasonably wide tires, it should be OK.
Cutting the seat post should be no problem. Just be sure the length of tube inserted is at least equal to the minimum insertion length marked on the tube before the cut.