beeblemaster wrote: same paint vulnerability with my 2015 bought Audax frame)
No problem, it's just come back to mind again! Gave it a decent clean end of last week, rebuilt the Rr wheel yesterday and couldn't help notice yet more paint dissolving and corrosion coming through. Have to say I don't want to waste money on it, so will probably simply slap a bit of paint on as part of the routine maintenance package or check and see if the agricultural merchants do a bit of painting in their spare time (NB. Obviously harvesting is starting, so it'd have to be a December job!)
Though the only other steel bike I've ever had, an Emmelle Clipper GT 12.6 (1985-2005) never had an issue with corrosion and the paint work still looked shiny and new on disposal (NB. Despite being kept in the garden shed for 2-3 years).
Nothing too problematic, and after some dabs of paint have dried for several days I'll apply some stick-on velcro 'fabric bit' which should give a long-term fix. of more concern was some rust developing where the top tube cable stop are brazed - It looks like this is due to sweat contanimation or brazing flux not being cleaned well enough, or indeed a combination of both. there was also a bit of rust where the rear brake outer touches the top tube after the rear cable stop - this was the most affected. These 3 areas have created filoform rust, so I got to work with some wet/dry, cleaned them with panel wipe and applied some re oxide primer. some undercoat and gloss will follow. Another bit of velcro will be added on the top tube/rear cable outer rub, and some thick wax or waxoyl at the cable stops. not too bad after 6 years (rarely seen rain), though not what I expected, as I thought lower/side mounted stops were a lot less prone to sweat corrosion than top-mounted outer cable guides of old. Some rain may have helped re any sweat? - I should add this wouldn't prevent me buying another Spa 
.
