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Questions and answers about sports

Can I use BSA bottom bracket’s plastic spacer as a cassette spacer?

5 min read

Asked by: Lakhwinder Schatz

When should you use a bottom bracket spacer?

Bottom bracket spacers are used to adjust the spindle position to add extra clearance, or to fine tune chainline. For example, if your inner chainring is too close to the chainstay you can add spacers to move the crank outward just a bit. They are really great if you want a perfect chainline on a fixed gear bike.

Do I need a cassette spacer?

You don’t need the spacer. You are correct, it is intended for when you are using a narrower cassette. If you can torque the lock ring without the spacer it shouldn’t be used. It’s likely that your derailleur will have the range to suit if it worked with your 8 cog cassette, so you should be able to tune and go.

What side do bottom bracket spacers go on?

If you’re running a chain device with your Super Boost setup then you’ll need a 2.5mm spacer on the right-hand side of the bottom bracket and a 4.5mm spacer on left-hand side of the crank axle and a 6.5mm spacer on the right.

How do you use BB spacers?

Quote from video: All you do is you put one spacer. On the chambering side on the drive.

Is a bottom bracket sleeve necessary?

It really depends on the design of your frame. If there is a hole in the BB shell where the seat tube is, it’s possible for water/moisture to get in the bottom bracket shell and cause problems with you bearings. Most carbon frames do not have any holes in the BB shell so it’s not needed.

How do I know which bottom bracket I need?

To find out the size of bottom bracket needed, measure the inside of the bottom bracket shell in your frame, it will be 73mm, 70mm or 68mm. Some older frames may have Italian threaded bottom brackets, instead of the more modern English.

Does 11 34 cassette need spacer?

If you have a ‘road’ 11s length freehub body then you do indeed need to use a spacer to fit CS-HG800-11 to it. CS-HG700-11 is the same length too, again available in 11-34. Both CS-HG800-11 and CS-HG700-11 are supplied with the required 1.85mm spacer so they can be fitted to 11s road freehubs.

What are cassette spacers for?

Spacers for cobbling together or converting your old cassettes. Available in: 1.85mm (for 10-speed cassettes on 11-speed freehub bodies)

Do 11 speed cassettes use spacers?

The answer is yes, you do need a spacer with an 11-speed cassette, but only if you run your 11 speed Shimano or SRAM drivetrain on a 10 or 9-speed freehub.

Why is bottom bracket important?

The bottom bracket is a critical component to every drive train. Connecting the left and right cranks, this is one of those important elements on the bike that directly effects power transfer between the rider’s legs and the bike’s drivetrain.

What is a 68 73 bottom bracket?

The 68mm and 73mm dimension measure the width of the bottom bracket on the frame of the bike with no BB installed, simply the width of the shell. Most road bikes that use a threaded bottom bracket measure 68mm wide and most cross country/trail mountain bikes measure 73mm.

How does a bottom bracket work?

The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle to which the crankset attaches, and the bearings that allow the spindle and crankset to rotate. The chainrings and pedals attach to the cranks.

What does BSA stand for bottom bracket?

The term BSA stands for Birmingham Small Arms, a British company that produced bicycles, cars and other durable goods. The term BSC stands for British Standard Cycle, which adopted the same standard. BSC is sometimes shortened to BC.

Does bottom bracket make a difference?

In addition, the average drag for all of the bottom brackets tested is just 0.77W. In other words, bottom brackets do different significantly drag-wise in terms of percentages but as far as actual watts are concerned, we’re talking relatively small numbers here that most general cyclists aren’t likely to notice.

What is the sleeve for on a bottom bracket?

Quote from video: Похожие запросы

Do I need spacers on my crankset?

For all cranksets with a constant diameter spindle (30mm, 29mm DUB and 24mm), spindle spacers are used as needed to remove any side-to-side play of the crank, and to center the crank in the frame. For most installations, the included spacers will be enough to properly position the cranks in the BB.

How many spacers do I need for braces?

Spacers are used to slowly widen the gaps between your molars. If your teeth are crowded or overlapping, the orthodontist needs to create space where there is none. You can have between one and eight spacers put in place depending on how much space your teeth need to readjust.

How many spacers does a GXP bottom bracket have?

two spacers

Each GXP bottom bracket comes with two spacers. For SRAM the following rule applies: 68mm bottom brackets need one spacer left and right, 73mm bottom brackets don’t need any spacers.

What is a 68 73 bottom bracket?

The 68mm and 73mm dimension measure the width of the bottom bracket on the frame of the bike with no BB installed, simply the width of the shell. Most road bikes that use a threaded bottom bracket measure 68mm wide and most cross country/trail mountain bikes measure 73mm.

What does BSA bottom bracket stand for?

BSA, or English threaded bottom bracket, is the most common threaded standard in use today. It uses a 68mm wide shell for road bikes, 73mm on mountain bikes, with a 34.8mm diameter shell. A few bike brands use an Italian threaded bottom bracket but these are rare.

Is BB92 the same as PF92?

The frame’s bottom bracket shell inner diameter is 37mm. A bearing with an OD of 37mm is pressed directly into the frame. Trek is moving away from the BB90/95 system to what they call PF92, which is the same as a BB92 (41mm ID shell and 92mm width).