bottom bracket cups are cracked
10-01-10 | 03:10 PM
#2
Senior Member
Joined: Jul 2009
Posts: 11,128
Likes: 39
Bikes: 1986 Alan Record Carbonio, 1985 Vitus Plus Carbone 7, 1984 Peugeot PSV, 1972 Line Seeker, 1986(est.) Medici Aerodynamic (Project), 1985(est.) Peugeot PY10FC
Tons of them at eBay, used and NOS, you will just need to find the correct threading and spindle size. Threading comes in JIS, French, Swiss, Italian, English (ISO). The cups and lock rings come in steel and aluminum. You also have a chice of sealed or loose bearing types. Best to go with sealed, of course, if you are looking for long term realiability and minimal maintenance. Don't bother with Titanium for these parts as they are just expensive weight weenie bling that might crack on you if you really work them hard.
Chombi
Chombi
10-01-10 | 04:46 PM
#3
Have you removed them yet? Sometimes they are difficult to remove and trash the threads if they are cracked when you take them out. If this is the case, you'll also need to have the BB shell re-tapped.
10-01-10 | 06:57 PM
#4
Senior Member
Joined: May 2003
Posts: 4,054
Likes: 164
From: Mountain Brook. AL
www.aebike.com look in component catalog under bottom bracket and at the YST offering. $10, probably a screw in replacement unless you have Italian or French threads, in which case check out Harris
Cyclery (under Sheldon Brown). Next cheapest is Shimano Sq Taper sealed bearing drop in eg UN54 at
Aebike.com though these seem to all be plastic cups now ($24). The YST will work with your present axle most likely.
Cyclery (under Sheldon Brown). Next cheapest is Shimano Sq Taper sealed bearing drop in eg UN54 at
Aebike.com though these seem to all be plastic cups now ($24). The YST will work with your present axle most likely.
Last edited by sch; 10-01-10 at 07:10 PM.
10-02-10 | 09:22 AM
#5
Senior Member
Joined: Aug 2005
Posts: 33,657
Likes: 1,119
From: Pittsburgh, PA
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
10-02-10 | 01:12 PM
#6
Senior Member
Joined: Jul 2009
Posts: 11,128
Likes: 39
Bikes: 1986 Alan Record Carbonio, 1985 Vitus Plus Carbone 7, 1984 Peugeot PSV, 1972 Line Seeker, 1986(est.) Medici Aerodynamic (Project), 1985(est.) Peugeot PY10FC
10-02-10 | 06:04 PM
#8
Senior Member
Joined: Aug 2005
Posts: 33,657
Likes: 1,119
From: Pittsburgh, PA
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
I know what JIS stands for. Hoewever, every Japanese bike I've ever seen, including those from the early 80's, has had English bottom bracket threading. The only JIS spec parts I'm aware of are headset cups and crown races and bb spindles.
What exactly is JIS bottom bracket threading?
What exactly is JIS bottom bracket threading?
10-02-10 | 08:30 PM
#9
There are some unique JIS thread sizes, but I don't believe that they have ever been used in bottom brackets.
10-03-10 | 10:56 AM
#10
Senior Member
Joined: Jul 2009
Posts: 11,128
Likes: 39
Bikes: 1986 Alan Record Carbonio, 1985 Vitus Plus Carbone 7, 1984 Peugeot PSV, 1972 Line Seeker, 1986(est.) Medici Aerodynamic (Project), 1985(est.) Peugeot PY10FC
Chombi
