Bottom Bracket: Shimano or something else?
07-20-10, 05:05 PM
#1
Alfredo Contador
Thread Starter
Join Date: Jan 2010
Location: Where everybody knows my name
Posts: 431
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Bottom Bracket: Shimano or something else?
I'm thinking to convert my triple to a double and am looking for a BB to go along as well. Current BB is a square taper one. Coupla questions:
- Does it matter what sort of external BB when it comes to triple to double?
- Does Shimano still use Octalink or are they external BB as well? What about ISIS?
- How do I determine the size of the BB that I need?
- What do you think of the Truvative GXP BB vs. a Shimano Tiagra BB?
- Italian vs English? What does that mean?
thanks.
- Does it matter what sort of external BB when it comes to triple to double?
- Does Shimano still use Octalink or are they external BB as well? What about ISIS?
- How do I determine the size of the BB that I need?
- What do you think of the Truvative GXP BB vs. a Shimano Tiagra BB?
- Italian vs English? What does that mean?
thanks.
07-20-10, 05:15 PM
#2
17yrold in 64yrold body
Join Date: May 2010
Location: Northern CA
Posts: 922
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Most square taper BB's will work with square taper cranks. I did hear of a Mavic crank splitting when installed on a shimano BB, but do not know this as fact. Octalink was in between square taper and external BB's (Shimano). Isis is different from Octalink, and not compatible. Some external BB's play nice together, others do not. If you buy an external BB crankset, it should come with the appropriate BB. English thread is what many Japanese and American bikes have as standard. Italian and French are different, and not compatible.
07-20-10, 05:28 PM
#3
Bianchi Goddess
Join Date: Apr 2009
Location: Shady Pines Retirement Fort Wayne, In
Posts: 27,858
Bikes: Too many to list here check my signature.
Mentioned: 192 Post(s)
Tagged: 2 Thread(s)
Quoted: 2930 Post(s)
Liked 2,923 Times
in
1,491 Posts
more than likely you need an English BB. however thetype and length of the SPINDLE is determined by the model of crank you are using. switching from a triple to a double crank you likely need a shorter spindle.
if you are unfamiliar with mechanics and changing BBs buy the one that matches your new double crank.
if you are unfamiliar with mechanics and changing BBs buy the one that matches your new double crank.
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
Thread
Thread Starter
Forum
Replies
Last Post
SteelCan
Bicycle Mechanics
10
08-05-10 10:23 AM
