Loose Fixed Cup
10-25-13, 07:16 PM
#1
Full Member
Thread Starter
Join Date: Dec 2004
Location: Chattanooga, Tn
Posts: 300
Bikes: 1977 Raleigh Record, 1987 Schwinn Prelude, 1971 Raleigh Record, 1988 Schwinn Traveler, 1967 (?) Carlton Super Course, 1959 Huffy Sportsman 3 speed, 1972 Raleigh Super Course, yet another 70-something Raleigh Record
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 50 Post(s)
Liked 18 Times
in
11 Posts
Loose Fixed Cup
Went riding with a co-worker last week. He has a folding bike and has been complaining that the BB has been coming loose since he re-greased it and re-installed the original bearings. After our ride it appeared loose again. It appeared the fixed cup was slightly away from the shell. He said if he had a thin wrench, he could check if it was loose and maybe tighten it without removing the crank arm. I volunteered a headset wrench, and he did find it loose, and was able to tighten it with the 36mm end, and he put a little blue threadlocker on it, too. He verified it is a left-hand thread. So, why does a left-hand-thread fixed cup come loose -- did he not tighten it enough? Should riding not tighten it up? Oh, he also said he didn't count the bearings, but just reinstalled the ones that were there. I'm wondering if a couple of missing bearings might cause this.
10-25-13, 07:17 PM
#2
Senior Member
Join Date: May 2010
Location: Hurricane Alley , Florida
Posts: 3,903
Bikes: Treks (USA), Schwinn Paramount, Schwinn letour,Raleigh Team Professional, Gazelle GoldLine Racing, 2 Super Mondias, Carlton Professional.
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 78 Post(s)
Liked 30 Times
in
22 Posts
It should be overhauled correctly.
10-27-13, 06:18 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 2,924 Times
in
1,491 Posts
It has something to do with the forces on the bearings I think. Fixed cups are called that for a reason, they are basically installed and torqued at the factory (or bikeshop) and not intended to be removed unless the BB is replaced. they should not be removed for routine overhauling. Odds are pretty good it will loosen up again since there is no way you can get enough torque on it with a HS wrench when the crank is in the way. Also the fixed cup needs to be installed and torqued before the rest of the BB can be installed and adjusted.
My fixed cup tool have a heavy aluminum bar about 3"x1"x4' and I use a homemade or my recently purchased Stien fixed cup tool. I very seldom have a fixed cup come loose
My fixed cup tool have a heavy aluminum bar about 3"x1"x4' and I use a homemade or my recently purchased Stien fixed cup tool. I very seldom have a fixed cup come loose
__________________
“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
Last edited by Bianchigirll; 10-27-13 at 07:00 PM.
10-27-13, 06:33 PM
#4
Senior Member
10-27-13, 06:47 PM
#5
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 2,924 Times
in
1,491 Posts
Sorry I don't remember. Maybe Ben's/Milwaukee or ....... I'll have to look around and see if I have the receipt. I do think mine is the new style made of rolled steel rather than an aluminum cup.
Unfortunately I think a lot of these great older tools like this are going the way of the station wagon. There isn't much demand for them any more so not that many get produced. Smaller Companies like Stien and Bicycle Research and others are also likely to shut down as demand for their tools and other products continue to decline and the owners get older.
Unfortunately I think a lot of these great older tools like this are going the way of the station wagon. There isn't much demand for them any more so not that many get produced. Smaller Companies like Stien and Bicycle Research and others are also likely to shut down as demand for their tools and other products continue to decline and the owners get older.
__________________
“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
Last edited by Bianchigirll; 10-27-13 at 07:03 PM.
10-27-13, 06:56 PM
#6
Full Member
Thread Starter
Join Date: Dec 2004
Location: Chattanooga, Tn
Posts: 300
Bikes: 1977 Raleigh Record, 1987 Schwinn Prelude, 1971 Raleigh Record, 1988 Schwinn Traveler, 1967 (?) Carlton Super Course, 1959 Huffy Sportsman 3 speed, 1972 Raleigh Super Course, yet another 70-something Raleigh Record
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 50 Post(s)
Liked 18 Times
in
11 Posts
I was surprised his initial removal of the fixed cup was so easy. I've only tried it once -- with the diy bolt-and-nut device described on the Sheldon Brown website -- and failed to get it loose. All of my BB overhauls have been through the left side. I don't really see the need for removing it for a normal service.
10-28-13, 07:21 PM
#7
Jockey Full Of Bourbon
Join Date: Sep 2013
Location: Southwest Ontario
Posts: 127
Bikes: Merckx Mourenx '69 with full Dura Ace, 1996 Merckx MX-Leader Campy Record 10 speed, Merckx EMX-5 ex-Etixx team bike with Campag Record 11 speed. Pinarello F4:13 with Campag Record 10 speed, New Merckx Liege 75 unbuilt, '86 Merckx Corsa Extra unbuilt.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
You will when it gets seized in there forever and ever, and how are the races, do you check them from the adjustable side?
We used to use a dab of tubi glue and put some arse behind it.
We used to use a dab of tubi glue and put some arse behind it.
