Originally Posted by
guy153
Weight: 82kg
Riding style: Party pace
Bikes: 1999 Peugeot "Competition" with Columbus Thron tubing, 2008 Trek 520 Tourer ("Trek Cromoly"), 2012-ish Whyte hardtail MTB (Hydroformed Al frame). Seatpost slippage issues on all of them! The Peug and the Trek both ended up with uprated seat post collars (they both had the kind that just slots over the top of the ST) that could take more torque. On the Whyte I ended up fabricobbling a better bolt. But none of my own frame-builds (12 bikes to date, 4 of which regularly being ridden by me) have needed anything above modest torque on the binder bolt.
That is an odd one for sure. I have to believe something was at play in those instances but I am at a loss for what it really could be as they are three different frames with you as a common denominator but not a heavy rider likely not putting down a bunch of power so it is just strange. Would love to see your frames. I love handbuilt bikes.