原帖由： Anthony Kouttron ,
According to the included image of this bike, it looks like the bike has a quick release seat clamp. Seat clamps can become loose over time from general use, so make sure to un-do the clamp and rotate the level clockwise to increase the tension the clamp applies to the seat post and then try clamping down the lever again. This will be a trial and error process, so rotate the lever, tighten the clamp, sit on the seat and see if it holds you. If not, rotate the clamp another turn or so and repeat the test again. Good luck!