Does your 650 seat bolt on like mine? do you want to be able to lift the seat without getting your tools out? Heres an elegent, easy and cheap mod, about $12.
- Go down to your local bicycle shop and purchase two seatpost quick release bolts.
- Remove your seat (last time you will need tools to do this)
- Drill the bolt holes all the way through with a 1/8 drill bit
- Place the seat back on and install a quick release bolt on each side.
Now you can tighten your seat or loosen it off without any tools. They are available in every colour. I chose black so they wouldn't stand out.