Weirdest bearing question ever
#1
My leg made the cover!
Thread Starter
Join Date: Dec 2007
Location: Franklin, IN
Posts: 459
Bikes: Trek, Arbourne, BMC, Orbea
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Weirdest bearing question ever
Just got new bike back from LBS after they ordered a bar/stem. I had HED Alps wheels on the bike when I took it in that I wanted tensioned/trued. When I got it home, I noticed the saddle wasn't centered, seatpost was higher than where I had it marked, and that the wheels hadn't been trued.
So I threw it up on the stand and corrected the saddle/seatpost, and changed out the wheels to the Dura Ace 7850's (pre tubeless) it came with, which are new. When I was done, I noticed a small bearing on the floor. I know the DA hub doesn't use cartridge bearings, not sure about the HED's. It's possible the bearing is from something else, but I have no idea what it would be. I just don't see any way the DA hubs, when assembled, could drop a bearing. When I called the LBS, they didn't see any way that it could lose a bearing either (although they thought the DA hub probably had cartridge bearings). The asked me to check hub play in the DAs, and there is none. They thought that it is possible that a free bearing in the shop might have stuck to something, which I guess could happen.
Long story short, should I be concerned enough to take the wheels in, hubs disassembled, and check to make sure all the bearings are there? I have never had them Or am I OK as long as there is no hub play? Again, this is a new bike (bought elsewhere than LBS as they aren't a dealer, but I have a great relationship with them...in fact, they told be not to pass up the deal on this bike). I can't think of any other component that would have loose bearings on the bike. If it helps, the group is DA, the headset is FSA (whatever BMC uses with their frames).
Thanks in advance.
So I threw it up on the stand and corrected the saddle/seatpost, and changed out the wheels to the Dura Ace 7850's (pre tubeless) it came with, which are new. When I was done, I noticed a small bearing on the floor. I know the DA hub doesn't use cartridge bearings, not sure about the HED's. It's possible the bearing is from something else, but I have no idea what it would be. I just don't see any way the DA hubs, when assembled, could drop a bearing. When I called the LBS, they didn't see any way that it could lose a bearing either (although they thought the DA hub probably had cartridge bearings). The asked me to check hub play in the DAs, and there is none. They thought that it is possible that a free bearing in the shop might have stuck to something, which I guess could happen.
Long story short, should I be concerned enough to take the wheels in, hubs disassembled, and check to make sure all the bearings are there? I have never had them Or am I OK as long as there is no hub play? Again, this is a new bike (bought elsewhere than LBS as they aren't a dealer, but I have a great relationship with them...in fact, they told be not to pass up the deal on this bike). I can't think of any other component that would have loose bearings on the bike. If it helps, the group is DA, the headset is FSA (whatever BMC uses with their frames).
Thanks in advance.
__________________
"If it first you don't succeed, try, try again. Then quit. There's no use being a damn fool about it." - W.C. Fields
"If it first you don't succeed, try, try again. Then quit. There's no use being a damn fool about it." - W.C. Fields
#2
Senior Member
The seat isn't any big mystery. The shop I hang out at automatically extends the seat post so they can clamp the post into the bike stand instead of clamping onto the frame tubes. Far less risk of scratching the paint that way and no worries about pinching cables or fluid hoses. I suspect your shop does the same thing. And even if they do put it back close it'll never be just right unless they measure to the millimeter.
The wheels is another issue. If they aren't true like you asked for then there's something wrong. Was it the dishing or a wobble you asked to be fixed? If it's the dish then perhaps the did it as requiested but it's something else on your bike that is the issue in the first place. If there's still a wobble take it back to them.
The bearing is likely as they said. Something off the floor that was caught up and fell off somehow. Unless your hub has suffered a total collapse and all the balls are now jammed up and in a D shape there's no way to spit out a single ball. And if some catastrophy had happened to the hub to cause such an ejection you'd sure feel it right away. Same with the headset, if it's loose enough to puke a ball you'll feel it right away.
The wheels is another issue. If they aren't true like you asked for then there's something wrong. Was it the dishing or a wobble you asked to be fixed? If it's the dish then perhaps the did it as requiested but it's something else on your bike that is the issue in the first place. If there's still a wobble take it back to them.
The bearing is likely as they said. Something off the floor that was caught up and fell off somehow. Unless your hub has suffered a total collapse and all the balls are now jammed up and in a D shape there's no way to spit out a single ball. And if some catastrophy had happened to the hub to cause such an ejection you'd sure feel it right away. Same with the headset, if it's loose enough to puke a ball you'll feel it right away.
#3
Junior Member
Join Date: Sep 2007
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
What size is the bearing, is it headset size or front or rear wheel bearing size. Should be easy for anyone in LBS to tell you. If it is any of the above, have your wheels or headset checked by LBS.
Hope that is of help
Hope that is of help
#4
Bill
Join Date: May 2007
Location: HIGHLANDS RANCH, CO
Posts: 630
Bikes: Specialized Globe Sport, Specialized Stumpjumper FSR Pro
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Did you ask them why the wheels had not been tensioned and trued?
Having a good relationship with the LBS is good but if they don't perform the maintence you ask them to do there is a problem there.
Did they charge for wheel truing etc?
Or then again the question might be 'Did the wheels need trueing and tensioning?'
IMO dishing is an integral part of the truing process not an isolated operation though it can be done singularly there is too much interaction with the other truing factors to completely separate it. If you ask for truing it better come back properly dished or they didn't do the job (IMO).
Having a good relationship with the LBS is good but if they don't perform the maintence you ask them to do there is a problem there.
Did they charge for wheel truing etc?
Or then again the question might be 'Did the wheels need trueing and tensioning?'
IMO dishing is an integral part of the truing process not an isolated operation though it can be done singularly there is too much interaction with the other truing factors to completely separate it. If you ask for truing it better come back properly dished or they didn't do the job (IMO).
#5
My leg made the cover!
Thread Starter
Join Date: Dec 2007
Location: Franklin, IN
Posts: 459
Bikes: Trek, Arbourne, BMC, Orbea
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I'll cut them a little slack on the wheels...I am relatively sure I wasn't charged for truing, and know if/when I take the wheels back, they'll take care of me. They are not terribly out of true, but there is a pretty big diversity in the tension I measured on the non-drive side, so would rather err on the side of caution.
With respect to the bearing, I will check it tomorrow, but according to the Park Tools website, DA bearings are 3/16"; it seems smaller than that. Since everything else uses cartridge bearings, I think I'm probably safe...
With respect to the bearing, I will check it tomorrow, but according to the Park Tools website, DA bearings are 3/16"; it seems smaller than that. Since everything else uses cartridge bearings, I think I'm probably safe...
__________________
"If it first you don't succeed, try, try again. Then quit. There's no use being a damn fool about it." - W.C. Fields
"If it first you don't succeed, try, try again. Then quit. There's no use being a damn fool about it." - W.C. Fields
#6
Insane Bicycle Mechanic
Join Date: Mar 2008
Location: other Vancouver
Posts: 9,811
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 788 Post(s)
Liked 688 Times
in
367 Posts
Like the shop said- it could be something that the tire picked up off the floor.
Something else that I've seen: some "polished" parts are actually ball-burnished, which means the aluminum parts are dumped in a tank with a jillion little balls that polish off the rough spots. Sometimes the balls stay stuck on the part for quite some time, then fall out. It could be that you found one of those.
Something else that I've seen: some "polished" parts are actually ball-burnished, which means the aluminum parts are dumped in a tank with a jillion little balls that polish off the rough spots. Sometimes the balls stay stuck on the part for quite some time, then fall out. It could be that you found one of those.
__________________
Jeff Wills
Comcast nuked my web page. It will return soon..
Jeff Wills
Comcast nuked my web page. It will return soon..
#7
Senior Member
Join Date: Feb 2008
Location: Colorado Springs
Posts: 699
Bikes: Gunnar Crosshairs, Giant Trance, Felt Breed, Marin SS MTB, Felt Pyre BMX bike, oldschool GT trials bike
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
if it was a bearing out of a hub it would let you know it. Im sure its something that happened to by laying around.
Im kinda surprised that the shop thought da hubs used cartridge bearings, da hubs have always been cup and cone along with the vast majority of every shimano hub made. Unless youve been going to this shop more than once or twice id at least visit a couple other local shops to see if they are any better.
Im kinda surprised that the shop thought da hubs used cartridge bearings, da hubs have always been cup and cone along with the vast majority of every shimano hub made. Unless youve been going to this shop more than once or twice id at least visit a couple other local shops to see if they are any better.
#8
Elitist Troglodyte
Join Date: Jun 2006
Location: Dallas
Posts: 6,925
Bikes: 03 Raleigh Professional (steel)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
NOT the weirdest bearing question ever. I think that ~honor has to be reserved for the guy that wanted to know if his use of butter to lube his hubs was a good idea.
__________________
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
Stupidity got us into this mess - why can't it get us out?
- Will Rogers