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PostPosted: Wed May 15, 2019 7:02 pm 
retrobike rider / Gold Trader
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Joined: Mon Jun 22, 2009 11:09 am
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Location: Devon
So the Judy's on my newly acquired bike have large patches of paint that is loose and came off after its first wash in 10 years.

I.e.

Image

Assuming they are magnesium lowers, and there are patches elsewhere where they are bubbling, assume I can't sand smooth and whack some hammering on them?


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PostPosted: Wed May 15, 2019 7:45 pm 
Gold Trader
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No reason you can't prep and paint them. It's how they got their finish originally ;)

I'm sure someone will be along to advise on what the best methods, primer and paint for the job will be.


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PostPosted: Wed May 15, 2019 7:51 pm 
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I'd pull em apart & get them lightly sandblasted that'll get the surface pretty much the same then as ishaw said primer & paint...


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PostPosted: Wed May 15, 2019 7:57 pm 
retrobike rider / Gold Trader
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So I shouldn't worry much how tatty or pitted they are?

I have some replacements coming I'm just curious. All my retro suspension has been marzocchi which last forever


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PostPosted: Wed May 15, 2019 8:01 pm 
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I've read on here (can't find the thread) not to sand blast fork lowers as no matter how careful you are some of the media will find its way inside and remain there just waiting to undo your good work. Hope this helps.


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PostPosted: Wed May 15, 2019 8:03 pm 
retrobike rider / Gold Trader
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Yeah thanks. I'd do it by hand.

I've seen plenty done on here but not when the forks have been seriously rough. These have plenty of bubbles and rough patches where magnesium looks like its corroded. Just was curious if there were opinions they'd then be too weak to use.

Thanks all


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 Post subject: Re: Re:
PostPosted: Wed May 15, 2019 8:52 pm 
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Location: Hull East Yorkshire - Eng
shedobits wrote:
I've read on here (can't find the thread) not to sand blast fork lowers as no matter how careful you are some of the media will find its way inside and remain there just waiting to undo your good work. Hope this helps.

Na just gotta clean them out thoroughly & they'll be fine.. :!:


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PostPosted: Wed May 15, 2019 9:11 pm 
Gold Trader / PoTM Winner / RB Rider
Gold Trader / PoTM Winner / RB Rider
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Joined: Fri Jul 23, 2010 4:13 pm
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Location: Royal Forest of Dean (Still looking for the Bear !)
Clean them up then use Etch primer for bare metal

https://www.ebay.co.uk/i/192914443261?c ... gJgffD_BwE


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PostPosted: Wed May 15, 2019 10:11 pm 
retrobike rider / Gold Trader
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Awesome gents


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