Hey, I’ve recently gotten into MTB and started learning the anatomy of a bike.
The rear hub makes a clicking noise when coasting but is silent when pedaling – this is caused by springs or ratchets in the hub either engaging with the rest of the system or going the opposite direction, causing the springs (ratchets) to click.
And here is what I cannot fully grasp: What makes the inside of the hub suddenly start going in the other direction when coasting?
Sorry if my description was somewhat vague but I did my best 😀
Thanks!
In: 23
A GIF is worth a thousand words here: https://www.notubes.com/media/wysiwyg/neo-product-1-2.gif
Take a look at the white and red pawls. See how they are sprung and hit the sawtooth-like static ring? That static ring is attached to the rest of the wheel, and what you see here is what’s happening when you backpedal. You get noise because the spring pushes the pawl back. When you pedal the pawls don’t have anywhere to go, they are pushing against the vertical part of the ramp, thus making the outer ring(remember it’s attached to the rest of the wheel) to move. When you coast, the same thing the GIF shows happen, but the inner part is static (you are holding it with your feet) and the outer is moving.
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