We are a team of students at Loughborough University studying Sports Technology currently designing an adjustable seat post that suits the needs of both downhill and cross country mountain biking. The seat will be designed so that it is out of the way during descents but can be raised easily (within 5 seconds) for climbing purposes.
Please take 2 mins of your time to go and fill this out as it will help us a lot and maybe in the longer run you as riders
http://www.surveymonkey.com/s.aspx?sm=m_2by6Yv7nzAC0f1GR_2bFop1Q_3d_3d
cheers james