Joined: Apr 2003
Posts: 1,469
Likes: 0
From: Perlas ng Silanganan
Bikes: Custom Knolly Chilcotin Limited Edition Orange, Dartmoor Wish, KHS 7500, Custom built Specialized Camber, S-Works Road, Cannondale Trail mtb, Polini MTB
i had that problem but discovered that it wasn't the frame..
It was the skewers.. It had somehow loose its grip when I pedalled hard or when I hit a bump..
After replacing the defective part, everything was well.