"Spot the BB type" competition

secretsam

When I were a lad (80s), there was one type of BB and threading was either Italian, British or French.

Now it's all gone to sh17 in a sailboat, with 86,000 different BB versions.

How do I know what mine is, and what the feck is all this about internal vs external cups, etc etc

Anyone able to help? Please!!

dj58

Various BB types are described on here http://www.parktool.com/blog/repair-help/

Monty Dog

This probably explains the differing types better:
http://www.qbp.com/diagrams/TechInfo/FSA/externalbbfitchart.pdf

Anonymous

If you tell us what bike you have we could probably tell you make, thread type, tools req etc.

secretsam

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19761977#p19761977]Maglia Rosa[/url] wrote:

If you tell us what bike you have we could probably tell you make, thread type, tools req etc.

Cinelli Saetta Sprint 2012, fitted with a Miche chainset, BB cups marked "BG 1.97 x 24T"...whatever that means!

imposter2.0

Current Saetta frames still have a standard BSA threaded BB shell, so it's probably a safe bet that yours does too..

keezx

[quote="

Cinelli Saetta Sprint 2012, fitted with a Miche chainset, BB cups marked "BG 1.97 x 24T"...whatever that means![/quote]

Most likely 1,37x24 T which is BSA, English threaded.
Absolutely not rare or problematic.

proto

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19767874#p19767874]SecretSam[/url] wrote:

[url=http://www.bikeradar.com/forums/viewtopic.php?p=19761977#p19761977]Maglia Rosa[/url] wrote:

If you tell us what bike you have we could probably tell you make, thread type, tools req etc.

Cinelli Saetta Sprint 2012, fitted with a Miche chainset, BB cups marked "BG 1.97 x 24T"...whatever that means!

Major diameter of thread - 1.370"
Pitch of thread - 24 threads per inch (TPI)

As already posted, standard English/BSA BB threads.