Cracked hub
12-10-21 | 06:51 PM
#1
Thread Starter
Senior Member
Joined: May 2014
Posts: 2,489
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From: Cleveland, Ohio
Cracked hub
Well, I was cleaning this front wheel and surprise!!
It is a cracked there.
The wheel is not usable anymore, isn't it?
It is a cracked there.
The wheel is not usable anymore, isn't it?
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1992 Torelli Nitro Express; 1974 Raleigh Professional, Bridgestone XO-2
1992 Torelli Nitro Express; 1974 Raleigh Professional, Bridgestone XO-2
12-10-21 | 07:19 PM
#3
Senior Member
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From: Thunder Bay, Ontario, Canada - burrrrr!
Bikes: 1958 Rabeneick 120D, 1968 Legnano Gran Premio, 196? Torpado Professional, 2000 Marinoni Piuma
Yup - scrap yard fodder. Sad to discover things like this and it has happened to me more than once, or twice or three...
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"98% of the bikes I buy are projects".
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12-10-21 | 08:06 PM
#4
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Joined: Feb 2013
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From: Alta California
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hubs are similar to bench vises and electric heating elements in that they carry with them the means of their own destruction
if the drive side cone is not cinched tightly against the locknut the rotation of the wheel can tighten the cone until it fractures the hub
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hubs are similar to bench vises and electric heating elements in that they carry with them the means of their own destruction
if the drive side cone is not cinched tightly against the locknut the rotation of the wheel can tighten the cone until it fractures the hub
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12-10-21 | 08:09 PM
#5
señor miembro
Joined: Dec 2018
Posts: 3,511
Likes: 8,865
From: Pac NW
Bikes: '70s - '80s Campagnolo
12-11-21 | 11:26 AM
#10
Bike Butcher of Portland
Joined: Jul 2014
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From: Portland, OR
Bikes: It's complicated.
I think I'm going to go inspect my fleet this morning...
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12-11-21 | 12:29 PM
#11
12-11-21 | 12:53 PM
#12
Senior Member
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From: A different place and time.
12-11-21 | 01:02 PM
#13
RUSA #3100
Joined: Feb 2012
Posts: 857
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From: Oregon City
Bikes: Yes
I didn't take it apart to see but it feels like the ratchet and the free hub are still functional. I didn't feel the need for an autopsy though since dead is dead! It is just for display on my wall of fame.
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12-11-21 | 01:28 PM
#14
Implication [MENTION=212717]old[/MENTION]hairhead is a destructive tester.
12-11-21 | 02:10 PM
#15
feros ferio
Joined: Jul 2000
Posts: 22,397
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From: www.ci.encinitas.ca.us
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
That reminds me of the Shimano front hub high flange I cracked at the spoke circle. I rode the short distance home very slowly and gingerly and moved the spokes, rim, axle, and bearings to a different hub shell. Kinda scary, even though no harm done in my case.
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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
12-11-21 | 02:30 PM
#16
Senior Member
Joined: Nov 2014
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From: Eugene, Oregon, USA
I suppose, rebuild if one wishes to match the other wheel, otherwise replace.
12-11-21 | 02:55 PM
#18
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Posts: 8,687
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missing a metalurgical examination under a high-power microscope, I’d assume a misfit between the diameter of the hardened bearing cup, and the diameter of the bearing seat cut into the hub body. The cup being too big for the hole, and the strain eventually cracking the hub shell. To some undetermined amount helped on by riding stresses.
Last edited by dabac; 12-11-21 at 05:10 PM.
