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Stripped Chain stay??? How to Protect

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Stripped Chain stay??? How to Protect

Old 02-06-19, 02:35 PM
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lewiswesley66
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Stripped Chain stay??? How to Protect

I recently bought a very pretty complete touring bike from the 80's, with campy parts and all the whoozits and whatzits I was looking for. The biggest problem (other than figuring out how to set up the bar end shifters/derailleurs properly) is that the entire chain stay on the side of the chain is stripped to raw steel. Now, I'm not an expert on clear coated steel, but it doesn't look like a clear coat was ever applied, and I live in quite a humid/wet area.

Do you guys have ideas on how I can tell if the steel is clear coated, coat it myself, and/or just cover the chain stay to prevent any damage? I'm thinking a commercial, adhesive chain stay protector/silicone tape would be the best bet, but I'd worry about the tape not adhering or wearing/allowing the steel to corrode. Otherwise, I would have to treat it with a clear coat myself and then apply silicone tape.

Any ideas on where to start? Links/specific descriptions of clear coating supplies/adhesives would be helpful! Or pictures if you've done this before.

All the best, bike forums!
Wes

Last edited by lewiswesley66; 02-06-19 at 03:07 PM.
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Old 02-06-19, 02:46 PM
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Andrew R Stewart 
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Wes- Don't rely on only a paint top coat for best protection. That top coat (and this means clear or any color) isn't formulated to adhere to raw steel very well, it wants a proper primer to stick to. That primer might also have a rust inhibiting aspect (beyond the coating/sealing of the steel's surface). While one could use a rattle can primer and top coat care needs to be taken with the rest of the adjacent painted surfaces to prevent over spray. In this case I would be tempted to use a brush on primer and paint, with a good fine bristled brush to limit the brush strokes from showing.

On top of whatever paint you do use I would then apply a chain stay protector to further reduce the chipping that chains make.

A touring bike with Campy? Which rear der and crankset does it have. The NR components are rather limited in gear range for loaded touring. Also are the bar end shifters also Campy? If so then don't expect great shifter control with them. Lacking a movement controlling added design (ratcheted friction pack or counter sprung lever) the Campy bar ends tend to either be too tight for ease of trimming after a shift or too loose to stay put over bumps and hard efforts. The SunTour or Shimano are generally regarded as being WAY better bar end levers. Andy
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Old 02-06-19, 03:06 PM
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lewiswesley66
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Ah, my bad I wrote drivetrain but meant wheels! Setup is below. Do you have a specific brand for primer and paint in mind? I would also send a link/photo but don't have permission at this stage. it is basically the entire chain stay (~1ft worth) that I would be painting over, and there is a small nob/guide for the rear derailleur that also doesn't seem to match the color of the bike.

The seller has told me that it appeared to him the chain stay wasp plated with chrome and not actually stripped to steel. I'm frankly not sure how to be certain of this.RIMS
Name: Campagnolo Lambda Strada
Brand: Campagnolo
Model: Lambda Strada
Years: 1987 - Early 1990's
Country: Italy

Tires
Specialized Touring-X 700x32 Black/Tan

PEDALS
Not Included

CRANK
Avocet 175mm Triple Crankset

BOTTOM BRACKET
Phil Wood? Sealed Bearings

FRONT DERAILLEUR
Suntour Cyclone M-II

REAR DERAILLEUR
Suntour Cyclone M-II

SHIFTERS
Grancompe

HANDLEBAR
Cinelli Giro D'Italia 40cm

STEM
Cinelli

HEADSET
Specialized

BRAKES
Gran Crompe

SADDLE
Avocet Touring


Originally Posted by Andrew R Stewart View Post
Wes- Don't rely on only a paint top coat for best protection. That top coat (and this means clear or any color) isn't formulated to adhere to raw steel very well, it wants a proper primer to stick to. That primer might also have a rust inhibiting aspect (beyond the coating/sealing of the steel's surface). While one could use a rattle can primer and top coat care needs to be taken with the rest of the adjacent painted surfaces to prevent over spray. In this case I would be tempted to use a brush on primer and paint, with a good fine bristled brush to limit the brush strokes from showing.

On top of whatever paint you do use I would then apply a chain stay protector to further reduce the chipping that chains make.

A touring bike with Campy? Which rear der and crankset does it have. The NR components are rather limited in gear range for loaded touring. Also are the bar end shifters also Campy? If so then don't expect great shifter control with them. Lacking a movement controlling added design (ratcheted friction pack or counter sprung lever) the Campy bar ends tend to either be too tight for ease of trimming after a shift or too loose to stay put over bumps and hard efforts. The SunTour or Shimano are generally regarded as being WAY better bar end levers. Andy
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Old 02-06-19, 04:07 PM
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You could have one of those spoke holders brazed on , drive side, and use the spokes for your chain slap protection.. ,

then get the whole frame powder coated, and the insides 'frame saver' coated.. and ir would be OK for decades..
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Old 02-07-19, 10:18 AM
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Are you sure that the stay is not chrome or nickel plated rather than bare metal?
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