Niner Biocentric I eccentric bottom bracket adapter won’t budge

Asked by: Tanya Robinson

How do you adjust an eccentric bottom bracket?

Quote from video: If you have a handy dandy spanner. Tool like this you just put it in like so. And turn it and you see how that tightens up that chain quite a bit.

What is a BioCentric bottom bracket?

The BioCentric II offsets the bottom bracket spindle 8.5mm from center, offering greater range of adjustment compared to a more traditional EBB setup. More offset is a boon when changing gears without having to change chain length and it allows riders to make more noticeable changes to frame geometry via BB position.

How does an eccentric bottom bracket work?

An eccentric bottom bracket is actually an adapter that holds English threaded bottom brackets and allows users to adjust the fore-to-aft position of the crankset to add tension to their chain.

How do I convert my bike to single speed?

Quote from video: Into a single speed bike in 10 easy steps step number one remove the bicycle chain from your bike. Use a chain tool to do that. Step two remove the shift cables and housings from your bicycle.

What is bottom bracket BB30?

The BB30 bottom bracket allows you to pair 30mm spindle cranks to 42mm inner diameter bottom bracket shells. Cannondale pioneered this standard along with specially designed cranks and many have found the benefits to them. Road versions have a 68mm width, MTB has 73mm.

What is a sliding dropout?

A sliding dropout on a bicycle is a dropout that allows you the flexibility of being able to move your rear wheel back or forwards. By doing so, you can increase your chain’s tension or change the handling and feel of how your bike rides.

How do you adjust sliding dropouts?

Quote from video: With a 10 millimeter open end wrench turn the tensioner nuts behind the dropouts to slide it into the desired. Position.

What is a BSA threaded bottom bracket?

The short answer to your question is that when you see BSA in terms of a bottom bracket, it refers to a 68 or 73mm shell with 1.370/1.375″ x 24 TPI threads and a left hand thread on the drive side cup.

How do you remove the bottom bracket on a BB30?

Quote from video: And line things back up slide it back through and you're going to just slide it back and repeat for the other. Side. Once you're done you can just pull the expansion sleeve off.

What causes BB30 creak?

The leading cause of BB30 bottom bracket creaking is bearing migration within the frame bb shell during use. The bearings shift around a minute amount, resulting in the dreaded creaking sounds. Typically somebody greases the bearings to fix it. This only masks the problem, or more often, exacerbates the problem.

How do you remove a bottom bracket without a tool?

Quote from video: So. So it's gripping on to the two sides of it. And. And then you want to take out your bolt or nut or whatever is holding those two things together. So I'm just going to do that like. This.

What is a BSA threaded bottom bracket?

The short answer to your question is that when you see BSA in terms of a bottom bracket, it refers to a 68 or 73mm shell with 1.370/1.375″ x 24 TPI threads and a left hand thread on the drive side cup.

How do you tighten a chain on a tandem bike?

Quote from video: And see that we've got a nice floppy floppy timing chain here and the basic trick now is to just put my weight down on the bottom tube.

What is a single speed mountain bike?

A single-speed bike has one front chainring and one rear drive gear, so you only have one riding gear. It will still have a freewheel, so you can hold the pedals stationary and coast. You Might Also Like: Fixed Gear Bikes – The Good, The Bad and the Ugly.

Does riding a single speed make you stronger?

It makes you a better/stronger rider.



The most obvious one is that it makes your legs stronger because you have to crank up hills in a much harder gear that you otherwise would. But it also makes you more efficient. Riding a singlespeed means that you need to plan ahead.

What is a good gear ratio for a single speed mountain bike?

2:1 gear ratio

A 2:1 gear ratio (like a 32×16) is what most new single-speeds come with. That’s a good gear ratio for someone who is riding flat to rolling terrain, but it can be too much gear for someone riding in the mountains or up extended steep climbs.