Facing Bottom Bracket
#1
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Facing Bottom Bracket
I just got my bike back from the LBS and they had to re-face the BB to get rid of a creak. It seemed like every time I washed my bike I was getting this creak and this time it wasn't going away. I cleaned the chain, pulled the BB, had the wheels hubs looked at, finally gave in and took it into the shop. I even took it to a different shop since my regular shop hadn't impressed me as of late. I was surprised that facing the BB was what they ended up doing and they said it was common. Only cost $20. I'm just curious to see how common, anyone else had to have this done?
#2
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The edges (faces) of the BB shell are supposed to be exactly parallel, and standard new frame preparation includes BB thread chasing/cleaning as well as facing. Head tube facing is also a good idea, for best headset bearing longevity and performance.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
#3
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so do most bike shops actually do this facing when assembling new bikes in your opinion? Considering what the BS charged I can't imagine it's to complicated. But then again I was never impressed with the service dept. at the BS I bought the bike from, Supergo.
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Pre-assembled factory bikes will not be faced by the bike shop. They aren't going to take it completely apart to do so and will only face these frames if there is a noticable problem.
A new bare frame, particularly a high-line one, should be faced and prepared by the maker and most good bike shops will do a quick facing job (bb and headtube) to be sure it is done right.
A new bare frame, particularly a high-line one, should be faced and prepared by the maker and most good bike shops will do a quick facing job (bb and headtube) to be sure it is done right.
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Originally Posted by azwhelan
Considering what the BS charged I can't imagine it's to complicated.
#6
feros ferio
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Originally Posted by HillRider
Pre-assembled factory bikes will not be faced by the bike shop. They aren't going to take it completely apart to do so and will only face these frames if there is a noticable problem.
A new bare frame, particularly a high-line one, should be faced and prepared by the maker and most good bike shops will do a quick facing job (bb and headtube) to be sure it is done right.
A new bare frame, particularly a high-line one, should be faced and prepared by the maker and most good bike shops will do a quick facing job (bb and headtube) to be sure it is done right.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
#8
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Originally Posted by ryanparrish
What does facing mean?
A similar device is used to "face" and square up the headtube to assure the headset is properly aligned with the headtube and fork steerer tube.
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Now you got me thinking..
I just order a new shimano BB (hologram) replacement for one of my bikes, as a matter of fact it should be on it’s way from Nashbar.
Bike in cuestion is a 105 eq. ‘dale, should I have my LBS to reface it before installation? Am I asking for trouble later if I skip it? Can it work *fine* without it?
Thanks.
I just order a new shimano BB (hologram) replacement for one of my bikes, as a matter of fact it should be on it’s way from Nashbar.
Bike in cuestion is a 105 eq. ‘dale, should I have my LBS to reface it before installation? Am I asking for trouble later if I skip it? Can it work *fine* without it?
Thanks.
#11
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Since I have a BB facer, I face all my BB shells. Every single frame I've ever built up except one actually needed it. This is true of frames from assembled bikes that were stripped. I don't think the factories do it all the time either. The one that didn't need it, by the way was a 2005 Pedal Force QS2 frame. It was on the money right out of the box.
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Originally Posted by spinerguy
Now you got me thinking..
I just order a new shimano BB (hologram) replacement for one of my bikes, as a matter of fact it should be on it’s way from Nashbar.
Bike in cuestion is a 105 eq. ‘dale, should I have my LBS to reface it before installation? Am I asking for trouble later if I skip it? Can it work *fine* without it?
Thanks.
I just order a new shimano BB (hologram) replacement for one of my bikes, as a matter of fact it should be on it’s way from Nashbar.
Bike in cuestion is a 105 eq. ‘dale, should I have my LBS to reface it before installation? Am I asking for trouble later if I skip it? Can it work *fine* without it?
Thanks.
#13
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I just acquired a new Bianchi EV3 frameset and I haven't ever built a road bike from scratch. I have done a fair amount of mountain bikes from the ground up and I have never faced a bottom bracket. This road frame is new and has paint/powdercoating on the outer edges of the BB shell. I'm pretty sure I need to have the LBS face it before assembling it, but I just want to double check with some of the more experienced builders. Is this something that should be done, or is it just something that a hyper-detail fanatic is going to worry about?
Thanks...
doug
Thanks...
doug
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Originally Posted by apexspeed
I Is this something that should be done, or is it just something that a hyper-detail fanatic is going to worry about?
Thanks...
doug
Thanks...
doug
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Thanks, I figured I would ask. I want to make sure I don't overlook any little things I might not be used to with a MTB build.
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Is facing only needed when installing these new external bottom bracket designs?
I assume that with the internal BB bearing designs the facing won't matter so much
I assume that with the internal BB bearing designs the facing won't matter so much
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There should not be any metal exposed once the BB is installed.
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I received my new Bianchi frame this afternoon, and I decided that before I build, I want the frame prepped. I called the LBS that does a fair amount of road bike traffic to get a price for a chase and face on the bottom bracket, and I was quoted $70.
Does that sound ridiculously high for 15 minutes of labor? What does a face & chase usually cost?
Does that sound ridiculously high for 15 minutes of labor? What does a face & chase usually cost?
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Originally Posted by Dirtdrop
After the bottom bracket is faced, is the newly exposed bare metal left that way to rust?
I would tell my dealers not to reface, but some of them did it anyway. The picture shows an old frame where spider veins of rust under the paint have made their way from the BB faces. Not life threatening, but the paint job is ruined.
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#21
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At my LBS it's $80. I guess it's like some auto dealerships where you get charged different rates for shop labor depending on whether the job can be done by the oil change monkey or whether they have to use the real mechanic who actually knows what he's doing.
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Originally Posted by Dave Moulton
I always faced the bottom bracket on frames I built prior to painting, and after painting would carefully sand any lumps in the paint on the faces but leave the primer coat intact.
I would tell my dealers not to reface, but some of them did it anyway. The picture shows an old frame where spider veins of rust under the paint have made their way from the BB faces. Not life threatening, but the paint job is ruined.
I would tell my dealers not to reface, but some of them did it anyway. The picture shows an old frame where spider veins of rust under the paint have made their way from the BB faces. Not life threatening, but the paint job is ruined.
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Originally Posted by Dave Moulton
I always faced the bottom bracket on frames I built prior to painting, and after painting would carefully sand any lumps in the paint on the faces but leave the primer coat intact.
I remember your bikes. Yours was a name people would recommend if you wanted a good quality custom built at reasonable prices.
Last edited by masiman; 09-12-06 at 05:36 PM.
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Wow, labor is high for some of you guys. I got a face and chase at my preferred LBS recently for $35.