Arrest that slippery seat post! - Simple, cheap mod

My bum acts as a hammer over unduly ground when i cycle.

The seat post gets pounded lower and lower.

My legs now does not extend fully and my knees hurt.

Arrest that slippery seat post!

Its a simple heavy host clamp that costs $2.60
The copper washer is used to protect the plastic seat post shim, preventing the clamp edge to cut.

The final look.

DIY Brass Bell

Though i needed a bell just to alert fellow cyclists and pedestrians.

I found the Sögreni Bell an inspiration because it is classy and simple. Appeals to the engineer in me.

The holder is a 1" pipe clamp with a M6 threaded hole.

The other stuff like brass cap (for the bell), spring, allen cap bolt (striker), rubber washers and M6 bolt, nuts are salvaged from my workshop.

Here's the sound