# Drum brake

> A drum brake works by brake shoes expanding against the inside of a drum in the wheel hub.

- **Also known as:** Fren pabucu, Kampanalı fren, Drum brake
- **Turkish term:** Kampana fren
- **Category:** [Brake Shoes & Drums](https://motorsikletparcasi.com/en/category/brake-shoes-and-drums)
- **Page:** https://motorsikletparcasi.com/en/glossary/drum-brake

It is common on small motorcycles and scooters, especially at the rear. The lever or pedal turns the brake arm via a cable or rod, and a cam spreads the shoes against the drum.

- Free play grows as the shoes wear; adjust it with the nut at the end of the cable or rod.
- Many models have a wear indicator (an arrow and a mark) on the brake arm; replace the shoes when the arrow passes the limit mark.
- A wet drum brakes weakly for a while; dry it with light braking after riding through water.

## Related terms

- [Brake pad](https://motorsikletparcasi.com/en/glossary/brake-pad): A brake pad is the friction-lined part that the caliper pistons press against the brake disc to slow the motorcycle.
- [ABS (anti-lock braking system)](https://motorsikletparcasi.com/en/glossary/abs): ABS (anti-lock braking system) detects a wheel about to lock under hard braking and modulates brake pressure many times a second to keep grip.

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- Source page: https://motorsikletparcasi.com/en/glossary/drum-brake
- Last updated: 2026-10-09
- Türkçe sürüm: https://motorsikletparcasi.com/sozluk/kampana-fren.md
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