I thought about that,but believe me,looks alot worse than the pic..Doesn't look that bad, how about you take it apart and clean/degrease it.
It's 35 years old and the sticker is like new has barely any rust (if any) on the bolts.
I don't see how this wouldn't clean up very nicely.
It depends on how much experience the powdercoater has with bike parts. When I had my M900 cranks powdercoated I didn't need to do my own masking and the threads were perfect with no need for cleaning and the chainring bolt holes were still the correct size.I have restored a few vintage motorbikes and by far powdercoating is the most durable. I`d recommend you get some scrap spindles to mask the pedal threads and you`ll need to protect the crank cap threads too which may be an issue as crank caps are usually plastic.The chainring spider interface will need to be filed down after powdercoating too to ensure a good fit.I dont think its worth the hassle for a humble 400LX chainset though....
I know powder coat etc will cost more than its worth,but its more like sentimental value...I've got the bike since 92. I'm restoring the entire bikeI have restored a few vintage motorbikes and by far powdercoating is the most durable. I`d recommend you get some scrap spindles to mask the pedal threads and you`ll need to protect the crank cap threads too which may be an issue as crank caps are usually plastic.The chainring spider interface will need to be filed down after powdercoating too to ensure a good fit.I dont think its worth the hassle for a humble 400LX chainset though....