Bottom Bracket for '78 Fuji Gran Tourer
#1
Senior Member
Thread Starter
Join Date: Mar 2009
Location: Grand Rapids, MI
Posts: 122
Bikes: Cannondale RT2 Tandem
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked 0 Times
in
0 Posts
Bottom Bracket for '78 Fuji Gran Tourer
Greetings everyone,
I'm looking to buy a new-old-stock sealed BB for my Fuji, but have no idea what size I need, or proper technique for measuring the old one.
There is "3S" stamped in the middle of the old BB, if that helps at all.
Thanks!
I'm looking to buy a new-old-stock sealed BB for my Fuji, but have no idea what size I need, or proper technique for measuring the old one.
There is "3S" stamped in the middle of the old BB, if that helps at all.
Thanks!
#2
Senior Member
Join Date: Oct 2005
Location: Fresno, CA
Posts: 4,454
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 128 Post(s)
Likes: 0
Liked 12 Times
in
10 Posts
A Fuji (Japanese bike) from that era should be standard English-threaded (68mm) bottom bracket, so you're in luck there.
Beyond that the bottom bracket you get should depend on the crank that you have or intend to use with the bike. The goal is to get proper chainline (front gears lined up with rear gears) and to have both pedals be the same distance from the bike's centerline.
Why do you want NOS? Why not just new?
Beyond that the bottom bracket you get should depend on the crank that you have or intend to use with the bike. The goal is to get proper chainline (front gears lined up with rear gears) and to have both pedals be the same distance from the bike's centerline.
Why do you want NOS? Why not just new?
__________________
"c" is not a unit that measures tire width
"c" is not a unit that measures tire width
#3
Senior Member
Thread Starter
Join Date: Mar 2009
Location: Grand Rapids, MI
Posts: 122
Bikes: Cannondale RT2 Tandem
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked 0 Times
in
0 Posts
Thanks for the info on the 68 mm!
As far as why I want NOS...I'm not sure! I've found an eBay store which sells NOS parts exclusively.
My cranks are square taper. Are there new BB's which still accommodate this type? I was assuming (and probably wrong) that all were octalink style now.
As far as why I want NOS...I'm not sure! I've found an eBay store which sells NOS parts exclusively.
My cranks are square taper. Are there new BB's which still accommodate this type? I was assuming (and probably wrong) that all were octalink style now.
#4
Cat 6
Join Date: Dec 2007
Location: Mountain Brook, AL
Posts: 7,519
Mentioned: 27 Post(s)
Tagged: 0 Thread(s)
Quoted: 500 Post(s)
Liked 183 Times
in
118 Posts
From SB, 3S is a 121.5mm spindle offset 5.5mm to the drive side. You'll doubtfully find a sealed equivalent, as they are almost uniformly symmetrical now, but SB says to substitute a 127mm one to give the right chainline. You will end up with a wider "tread", or "Q-factor", on your crankset.
You know, I might even have an old loose ball one. It's not new, but it should give you some service, if your current one is now toast. I'll look for it tomorrow. Edit: It's a 5SS, 124.5mm
You know, I might even have an old loose ball one. It's not new, but it should give you some service, if your current one is now toast. I'll look for it tomorrow. Edit: It's a 5SS, 124.5mm
__________________
72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
Last edited by Ex Pres; 04-24-09 at 08:55 PM.
#5
Senior Member
Thread Starter
Join Date: Mar 2009
Location: Grand Rapids, MI
Posts: 122
Bikes: Cannondale RT2 Tandem
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked 0 Times
in
0 Posts
Thanks for the info, Bob Barker.
Probably a noob question, but what is SB?
edit....oh, never mind...Sheldon Brown
Probably a noob question, but what is SB?
edit....oh, never mind...Sheldon Brown