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So, my engineering skills haven't deserted me. After drenching the square tapered cranks with peneration spray overnight, I finally got the cranks off, but only after slightly damaging the extractor.
I then drilled the crankset rivets on the outer and inner rings so only the middle ring (32 tooth) remains, saving me the bill on £40 for a new one.
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I also changed the intragrated brake/gear selectors for a BMX style 3 finger brake handle as it was much lighter and simpler to use.
Next problem is how to get the bottom bracket out, I have the extraction tool, but can't remember what tool to use with it! Doh!
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