Timeline for Rust hole on tube between chain stays
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 25, 2019 at 16:21 | comment | added | ojs | Just noting that kickstand support is usually a plate with mounting hole because it's cheaper to do and survives clamping better than a tube. This is most likely for fender mount. | |
| Feb 25, 2019 at 15:00 | history | tweeted | twitter.com/StackBicycles/status/1100047941518196737 | ||
| Feb 25, 2019 at 13:35 | vote | accept | henry | ||
| Feb 25, 2019 at 6:49 | comment | added | Criggie♦ | Lastly - do you care about the existing blue paint? I can see its already undercut by rust and flaking off, so any rebuild will require a full sandblast and either paint or powdercoat. So there's nothing against wirebrushing the dodgy looking areas and poking it hard with an awl. If its rusted, you'll soon see the point sink in. Be ruthless - your face could be on the line if this frame fails in use because you didn't notice the rust. Be brutal, be honest with yourself and don't get blinded by sentimentality. | |
| Feb 25, 2019 at 6:47 | comment | added | Criggie♦ | Do you have access to a bore scope camera? They're reasonably cheap on various chinese websites, and use a phone as a display. Consider feeding one in through the bottom bracket area and up both chainstays. You're looking for rust, or worse sunlight coming through a pinhole. | |
| Feb 25, 2019 at 6:45 | comment | added | Criggie♦ | The frame has sentimental value to you - and for that reason alone its worth saving. Have you considered sealing it and making a display piece out of it ? | |
| Feb 25, 2019 at 4:50 | answer | added | Rider_X | timeline score: 5 | |
| Feb 24, 2019 at 23:56 | comment | added | Daniel R Hicks | @AndrewHenle - The most effective check for rust damage would be to open up the bottom bracket and check inside. If any significant amount of water has gotten inside it will be immediately obvious. | |
| Feb 24, 2019 at 23:50 | comment | added | Andrew Henle | @DanielRHicks I've seen numerous bikes with the bottom bracket rusted up, even with no visible external rust. And that's the problem - this bike has loads of visible external rust. Internally it's likely no better, and there are places where a critical failure would be catastrophic where it's probably impossible to check for internal rust. Is it possible to check the insides where the chainstays, downtube, or seattube attach to the bottom bracket? Where the downtube and top tube attach to the steer tube? Where the dropouts are welded to the chainstays? | |
| Feb 24, 2019 at 20:18 | comment | added | Daniel R Hicks | @AndrewHenle - In my experience that tube is quite often very thin. Encountering one that's been crushed is not at all unusual. And, yes, water gets into the frame through several channels, most notably the seat tube. I've seen numerous bikes with the bottom bracket rusted up, even with no visible external rust. | |
| Feb 24, 2019 at 19:31 | answer | added | cmaster - reinstate monica | timeline score: 2 | |
| Feb 24, 2019 at 19:01 | comment | added | Andrew Henle | The tube is there to support the kickstand, and likely was damaged by a loose kickstand and/or overtightening of the kickstand. And that means it's likely one of the thickest chunks of steel on the bike. And it's completely rusted through. The worrisome point is whether the rust has gotten into one of the chain stays -- probably not, but it would take careful inspection to be sure. The problem is you can't see inside. And there are ways for water to get inside places you can't see. Chain stays can have vents. Downtubes have shifter bosses where screws might penetrate. | |
| Feb 24, 2019 at 18:39 | comment | added | Daniel R Hicks | The tube is there to support the kickstand, and likely was damaged by a loose kickstand and/or overtightening of the kickstand. It provides very little additional strength/stiffness to the chain stays. The worrisome point is whether the rust has gotten into one of the chain stays -- probably not, but it would take careful inspection to be sure. | |
| Feb 24, 2019 at 17:23 | answer | added | Andrew Henle | timeline score: 2 | |
| Feb 24, 2019 at 17:01 | history | asked | henry | CC BY-SA 4.0 |