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Easy-X |
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Easy-X Super Spammer
Joined: 08 Mar 2019 Karma :
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Posted: 00:42 - 25 Sep 2022 Post subject: Rust |
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So we've probably all seen some video where some old rusty shit-heap gets stripped down, sand blasted and repainted and if it's several decades old rust is unsurprising. Something less than 10 years old though...
Fair enough if the powder coating or paint layer is damaged but I was watching someone doing a Harley swing arm (yes, yes, harley shite and all that) and the paint was coming off in sheets with surface rust underneath! How do such things happen?! Is the case that the manufacturers have such thin layers of paint that it's barely any protection at all?
The swing arm on my XSR for example. It had a little bit of rust bubbling up in areas where water might collect. So what? Surely the paint layer would fuck that off. (BTW I sanded the affected areas, dabbed on some rust converter and repainted. It's been fine ever since.) Anyhoo, how did it start to rust in the first place? ____________________ Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter |
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doggone |
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doggone World Chat Champion
Joined: 20 May 2004 Karma :
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trevor saxe-coburg-gotha |
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trevor saxe-coburg-gotha World Chat Champion
Joined: 22 Nov 2012 Karma :
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Posted: 08:42 - 25 Sep 2022 Post subject: Re: Rust |
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Easy-X wrote: | The swing arm on my XSR for example. It had a little bit of rust bubbling up in areas where water might collect. So what? Surely the paint layer would fuck that off. (BTW I sanded the affected areas, dabbed on some rust converter and repainted. It's been fine ever since.) Anyhoo, how did it start to rust in the first place? |
How often do you wash your bike, and what's your method, etc.?
As for your question more generally, I actually think it's down to poor quality materials rather than anything much that happens after a bike has been nailed together. By which I mean, I think some steel is quite low grade and has incipient pitting which in turn often means oxidation - albeit at an almost microscopic level. Over several years and depending on other factors such as detergent use, slight chips and abraded areas, the whole process of oxidation is accelerated and soon its visible to the eye. But yeah - the original metal itself. I think the cause might be there.
That said, and this is an interesting case study (of two acquaintances): Two Kawasaki bikes - ER6 and Versys 6. Both ridden all year-ish (avoiding rain where possible), but through winter. One shows various signs of rust, the other none. The rusty bike owner says they're not going to buy another Kawasaki; the other owner is really happy with their purchase.
The single biggest variable: One washed their bike a lot, using various latest greatest products (Muck Off, blah blah etc etc); the other avoided detergent at every step, and tended towards a more trad oily rag, greasing pivot points, a spray of WD or GT85 here and there, etc.
I'm not sure what the actual cause is, but I thought this was interesting cos it's not often you get the chance to compare two similar bikes of similar age and see how different approaches to ownership bring about different results. It is a small sample though!! ____________________ "Life is a sexually transmitted disease and the mortality rate is one hundred percent."
Mobylette Type 50 ---> Raleigh Grifter ---> Neval Minsk 125 |
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doggone |
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doggone World Chat Champion
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Polarbear |
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Polarbear Super Spammer
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Easy-X |
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Easy-X Super Spammer
Joined: 08 Mar 2019 Karma :
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Posted: 11:47 - 25 Sep 2022 Post subject: Re: Rust |
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trevor saxe-coburg-gotha wrote: | How often do you wash your bike, and what's your method, etc.? |
I'm also in the "wash infrequently, ACF50 after if I do" camp. BTW the swing arm rust spots were there when I got the bike. Things that have gone rusty in my ownership are annoying little brackets here and there, the stuff that routes pipes and cables.
I suppose it's one of those "in this day and age" things. Shouldn't we all have flying cars by now?! Nope, and we can't even manage to stop shit rusting ____________________ Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter |
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Kawasaki Jimbo |
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Kawasaki Jimbo World Chat Champion
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Fat Angry Scotsman |
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Fat Angry Scotsman World Chat Champion
Joined: 12 Jan 2021 Karma :
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Posted: 11:17 - 26 Sep 2022 Post subject: Re: Rust |
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trevor saxe-coburg-gotha wrote: | Easy-X wrote: | The swing arm on my XSR for example. It had a little bit of rust bubbling up in areas where water might collect. So what? Surely the paint layer would fuck that off. (BTW I sanded the affected areas, dabbed on some rust converter and repainted. It's been fine ever since.) Anyhoo, how did it start to rust in the first place? |
How often do you wash your bike, and what's your method, etc.?
As for your question more generally, I actually think it's down to poor quality materials rather than anything much that happens after a bike has been nailed together. By which I mean, I think some steel is quite low grade and has incipient pitting which in turn often means oxidation - albeit at an almost microscopic level. Over several years and depending on other factors such as detergent use, slight chips and abraded areas, the whole process of oxidation is accelerated and soon its visible to the eye. But yeah - the original metal itself. I think the cause might be there.
That said, and this is an interesting case study (of two acquaintances): Two Kawasaki bikes - ER6 and Versys 6. Both ridden all year-ish (avoiding rain where possible), but through winter. One shows various signs of rust, the other none. The rusty bike owner says they're not going to buy another Kawasaki; the other owner is really happy with their purchase.
The single biggest variable: One washed their bike a lot, using various latest greatest products (Muck Off, blah blah etc etc); the other avoided detergent at every step, and tended towards a more trad oily rag, greasing pivot points, a spray of WD or GT85 here and there, etc.
I'm not sure what the actual cause is, but I thought this was interesting cos it's not often you get the chance to compare two similar bikes of similar age and see how different approaches to ownership bring about different results. It is a small sample though!! |
I guess it's the ER6 that's rusty because mine is too ____________________ PRESENT: 2018 BMW S1000XR SE Sport.
PAST: 2009 Kawasaki ER-6F. 2021 Zontes ZT-125U. |
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A100man |
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A100man World Chat Champion
Joined: 19 Aug 2013 Karma :
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Posted: 11:44 - 26 Sep 2022 Post subject: Re: Rust |
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Easy-X wrote: |
Fair enough if the powder coating or paint layer is damaged but I was watching someone doing a Harley swing arm (yes, yes, harley shite and all that) and the paint was coming off in sheets with surface rust underneath! H
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I'll bet that Harley swinger was powder coated. That tend to happen if the surface is damaged and water (salty water) can creep under the coating. Paint chips but the corrosion is more localised is my understanding. ____________________ Now: A100, GT250A, XJ598, FZ750
Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600 |
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Bhud |
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Bhud World Chat Champion
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Old Thread Alert!
The last post was made 1 year, 212 days ago. Instead of replying here, would creating a new thread be more useful? |
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