What part of a bicycle is designed to increase friction?

Answer 1

The chain and the axles of the wheels are your main enemies as far as friction loss. (Tire pressure issues follow.) Yes, there are a handful of other things that "suck power" from your efforts, but a new or only lightly worn chain (that is clean and properly lubricated) and a set of clean and properly lubricated and "set up" wheel bearings (for the non-cartridge types) is the first place to start work. Make sure your tires are pumped up all the way. Get advice on pressure, but know that more is better as far as friction loss. High pressure tires suffer less friction loss with the road than the same tire that is under inflated. If all else fails, read the specs on the wall of the tire. You have a lot of control over these issues. Riding clothing and technique will also help, but ask the bike shop folks about this. Do some reading, too. A link is provided to a powerhouse bike guy who has spent a lot of time taking what he knows and posting it on his site for you to read for free. Take advantage of it.

Answer 2

The brake pads of a bicycle are specifically designed to increase friction against the wheel to slow the bike when they make contact with the rim.

Brake pads are usually made of rubber compounds and are often etched with a pattern. This gives them a very rough surface which increases friction even further with the rim when they are applied.

Answer 3

Friction is needed particularly where the tires meets the ground, in the brakes, on the pedals, and on the saddle. If there wasn't any friction there, you'd slip.

And also everywhere where one part of the is supposed to be firmly mounted to another part, like between frame and seat post, fork and stem ASO. No friction there, these parts would slip.

One place where friction isn't wanted is in the bearings. Bearings you want to move as easy as possible.

Answer 4

You could argue that friction is important in most aspects of the bicycle. For one, friction between the bike tires and the ground allow the bike to move forwards and backwards, and to stop. Without friction between the various gears and the bike chain, they wouldn't move very efficiently when you pedaled. Friction between your foot and the pedals is also necessary, or else your foot would continually slip off. You could even argue that it is friction keeping the various screws and bolts in place.

Answer 5

Where the bicycle tyres meet the road surface.

Answer 6

Parts that move WRT each other need to have low friction. Pedal vs pedal axle. Wheel axle vs hub for instance.

Answer 7

Apart from the necessary friction between a tyre and the road surface, friction is very useful when the cyclist pulls on the brakes to either slow down or come to a halt.

Answer 8

bearings and lubrication

Answer 9

See in the pic👇