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Project Sports

Questions and answers about sports

Bottom bracket needing repacement more often in a single speed bike

4 min read

Asked by: Sam Castro

How long should a bicycle bottom bracket last?

They are still in use and come stock on many bicycles, especially lower end ones. These bottom bracket units can actually be pretty sturdy and can last for years or decades and the user pretty tosses in a new one when it seizes up in a rainstorm.
Aug 24, 2019

How often do bottom brackets need to be replaced?

Every three months or so I’ll take the cranks out and if it’s a threaded bb, I’ll remove the bb and do the full service. Around the three month mark is normally enough time, even in the best conditions for dirt to work its way into the small gaps and contact points around the crankset and bottom bracket area.
May 29, 2020

What causes bottom bracket failure?

The fail by water and grit entering the bearing and causing the cartridge bearings to get loose. This is felt by poor shifting or chain rub, and finally the bearing can get very stiff if the balls jam up inside. External bearings can be cleaned and adjusted. Most have some sort of seal that can also be replaced.
Jun 8, 2011

How do I know if my bike bottom bracket needs replacing?

Quote from video: But if it's just making noises. It might just need taking apart cleaning and servicing re-greasing and putting back.

How do I know if my bottom bracket bearings are bad?

Quote from video: And see if you can feel knocking in the bearings hard to see sometimes you can feel it. Another good indicator is to use some other senses like a sense of feel and some hearing.

Do I need to replace bottom bracket when replacing crankset?

To answer your question specifically, yes cranksets require a specific bottom bracket, especially so the new offerings from SRAM and Shimano and others.
Aug 6, 2019

Why does my bike click when I pedal hard?

The chain will rub against the derailleur only in some gears since it changes its angle as you shift gears. That’s why your bike makes a clicking noise when pedaling hard. So, you need to shift your bike into the gear where you hear the clicking.
Nov 19, 2021

What happens if you ride with a loose bottom bracket?

If it’s coming from inside the bottom bracket and it’s an internal BB, you’re fine. If it’s an external BB, it’s a bit riskier. It’s possible to have the bearing seize in which case if you keep riding the bike, the axle slides against the inside face of the bearing and can be damaged.
Sep 22, 2010

Why does my bike creak when I pedal hard?

That creaky squeaking you hear as you pedal “could mean that [your bike] has a dry chain or bearings,” Yozell says. Cleaning and lubing your chain is usually a good place to start with any weird noise, but if it doesn’t solve the squeak, you may need to maintain or replace some bearings (see below).
Apr 19, 2022

Do I need to grease the bottom bracket?

In the case of the bottom bracket, you will use the grease when you install it, whether it is threaded, press fit or similar, and in the same way when you install or clean the cranks. The point of contact of the cranks with the bottom bracket should be greased too.
Dec 28, 2020

Should bottom brackets spin freely?

If the bottom bracket was already used, it should spin reasonably well. Bottom brackets don’t have to just spin to a silly degree because it’s all about how they perform when loaded, not unloaded like in your spin test.
May 29, 2017

How long do bike wheel bearings last?

Quote from video: People also ask

Do bottom brackets wear out?

Registered. bottom brackets do wear out over time. sometimes if your bottom bracket is making noise or not spinning freely you’ll have to take the bottom bracket out, regrease it and put it back in. if your going to buy a new bb you’ll need to know what kind and what size your bike uses.
Sep 3, 2006

How long do bottom brackets last mountain bike?

They SHOULD last 3000 miles!
Nov 7, 2013

How long does a Shimano press fit bottom bracket last?

It’s been close to 2.5 years with it and between 10-15,000 miles.
Aug 22, 2017

How long do bicycle bearings last?

Normally, on a bike not left exposed to the elements 24/7, good-quality bike bearings should last 25-50,000 miles or so.

What causes bike bearings to go bad?

What Causes A Wheel Bearing To Keep Going Bad. Using up the grease within the hub is one of the reasons wheel bearings go bad. In most cases you can just re-grease them. This can happen over time with regular use.

How often should I grease my bike bearings?

Most people don’t realize this, but your bike needs maintenance. Your axle bearings needs to be cleaned and repacked with grease every 500 miles (100 on a mountain bike). This instructable shows how to repack your axle bearings and install a new freewheel body (if you need one).