Slipping seat post. Sore test icicles.
Having recently built a rather lovely singular osperey into a randonneur type bike I am having trouble witht he seatpost. It seems to slip under load, particularly when transporting beer home from the shop in the saddle bag. Any recommendations for a decent seatpost that will not slip and poke the saddle into my test icicles in a most unpleasant fashion? Currently using something not dissimilar to this