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Old 08-26-12, 03:11 PM   #1
Stromejl
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Need 1972 Raleigh Grand Prix Help

I have what I believe is a 1972 Raleigh Grand Prix. This morning I was riding and basically blew up the large front sprocket. It is now bent and I need to remove it. My biggest question is what is the safest/most correct way to take of the cranks so I can remove/replace the sprocket?
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Old 08-26-12, 03:49 PM   #2
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Old 08-26-12, 03:59 PM   #3
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Should be moved to Bike Maintenance Thread.

If it is a Stronglight or TA (not likely) crank, you need a $50 adapter to pull the cranks. Other JIS cranks a standard Park or Pedro's crank pullers will work. In lieu of that, go to Harbor Freight. Or try a LBS that handles vintage bikes.

It's a good opportunity to clean and lube your BB.
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Old 08-26-12, 04:36 PM   #4
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I cannot tell from your photo whether the large sprocket is integral with the spider, but I suspect from your question that it is. If a standard cotterless crank puller threads smoothly and securely into your crank, you do not need a weird-size French adaptor. If the puller feels wiggly when threaded into the crank, STOP before you damage the crank.
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Old 08-26-12, 04:52 PM   #5
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Got it. Thanks guys.
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