Simple answer. No! (not really)

Why? Coin testing on carbon fractures is still used on surfaces such as helicopter blades to pre test before detailed inspection. These surfaces are flattish and more uniform. It is easier to tell the difference. Still I would prefer a better inspection if I am honest!

Bike frames/ forks and wheels are complex shapes. These shapes change pitch in any given direction or thickness. For example if you tapped over a lugged area you would think the bike was about to fall apart…Even paint thickness’s change depending on where the concentration of paint is.

This blog is to dissuade cyclists and bike shops from performing this test to ensure safely. It is not safe so don’t do it!