Is this Stronglight crank a goner?
10-25-08, 04:12 PM
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Is this Stronglight crank a goner?
Hello,
A friend brought me her old Peugeot. Someone had popped a wheelie on it, and in the course of doing so, had disengaged the chainwheels from the crank. The chainwheels now spin freely, completely unaffected by the crank.
The crank is clearly a Stronglight based on the "S" logo on it, but it has no other easily interpretable markings on it except "Made in France." I couldn't find anything like it on VeloBase.
It seems that the chainwheels are affixed to the crank with some sort of compression fit: it almost seems that the crank was peened around the chainwheels to hold them in place.
Is this thing repairable? It does seem cheap: there are a lot more rivets than removable fasteners throughout the crankset/chainwheels.
Any recommendations or opinions would certainly help!
Thanks.
A friend brought me her old Peugeot. Someone had popped a wheelie on it, and in the course of doing so, had disengaged the chainwheels from the crank. The chainwheels now spin freely, completely unaffected by the crank.
The crank is clearly a Stronglight based on the "S" logo on it, but it has no other easily interpretable markings on it except "Made in France." I couldn't find anything like it on VeloBase.
It seems that the chainwheels are affixed to the crank with some sort of compression fit: it almost seems that the crank was peened around the chainwheels to hold them in place.
Is this thing repairable? It does seem cheap: there are a lot more rivets than removable fasteners throughout the crankset/chainwheels.
Any recommendations or opinions would certainly help!
Thanks.
10-25-08, 04:16 PM
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Yup......It's a gonner.
10-25-08, 04:37 PM
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Done for. On the plus side, it is an excuse to pick up a $10 Shimano 105 crankset on ePay.
-Kurt
-Kurt
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10-25-08, 04:48 PM
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Thanks for the prompt responses. It does seem like a good opportunity to upgrade.
So what is the story with these things? Are my hunches about the manufacturing correct?
So what is the story with these things? Are my hunches about the manufacturing correct?
10-25-08, 05:10 PM
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If you are really desperate you could always weld it ! (did I really say that ?)
10-25-08, 05:21 PM
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Stronglight or possibly sold under the marketing name Speidel.
These were the cheapest of all cranks made in the 1980s. Produced as original equipment for lower quality bikes. I had a similar model but in all alloy found on a mid-range early 80s Peugeot. I was shocked at the construction. They were a permanent press-fit and the outer ring was not even replaceable - so apparently they were not expected to last any longer than a chainring. The one on her bike appears to have even less expensive stamped steel chainrings, so this would have been intended for a K-mart quality bike 25 years ago. They were probably once intended to supercede the older style cottered cranks, and may even have been considered "better" because they were lighter weight and even used standard square tapered axles. In fact they were just MUCH more cheaply made and easier to completely assemble by machines in a factory. I'm still amazed mine is still functioning on a friend's old beater bike.
Unfortunately it will need to be replaced. Look for sales on cheap used cranksets - in fact, just ask around local bike shops for discarded (upgraded) cranksets which they may have kept in their back room which they might want to make a few bucks on.
Good luck!
These were the cheapest of all cranks made in the 1980s. Produced as original equipment for lower quality bikes. I had a similar model but in all alloy found on a mid-range early 80s Peugeot. I was shocked at the construction. They were a permanent press-fit and the outer ring was not even replaceable - so apparently they were not expected to last any longer than a chainring. The one on her bike appears to have even less expensive stamped steel chainrings, so this would have been intended for a K-mart quality bike 25 years ago. They were probably once intended to supercede the older style cottered cranks, and may even have been considered "better" because they were lighter weight and even used standard square tapered axles. In fact they were just MUCH more cheaply made and easier to completely assemble by machines in a factory. I'm still amazed mine is still functioning on a friend's old beater bike.
Unfortunately it will need to be replaced. Look for sales on cheap used cranksets - in fact, just ask around local bike shops for discarded (upgraded) cranksets which they may have kept in their back room which they might want to make a few bucks on.
Good luck!
10-25-08, 05:23 PM
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It's not a Stronglight or Simplex chainset, it's a Sachs. It's swaged and the only repair will be to get it welded.
10-25-08, 07:23 PM
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I'm guessing the rings are steel and the arm is alloy........Can't weld aluminum to steel.
10-25-08, 08:17 PM
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It could be fixed by pinning it back together but you still have a lousy crank when your done,not worth it.
10-25-08, 08:37 PM
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Considering it's a swaged crank, it's not much of a loss anyways. Get something forged to replace it, and you'll never have to worry about something like that happening again. ^__^
10-25-08, 09:49 PM
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If you must have something very like it, here's one on eBay:
https://cgi.ebay.com/VINTAGE-SPIDEL-C...3A1|240%3A1318
https://cgi.ebay.com/VINTAGE-SPIDEL-C...3A1|240%3A1318
10-26-08, 11:20 AM
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Sachs (acquired by SRAM) bought Huret...did they swallow up Stronglight/Spidel too? It's too much work to track all these mergers and acquisitions...Anyway, you'll probably need to watch out for spindle taper and length matching when you shop for a replacement: that $10 Shimano 105 might be a bad choice unless you buy the matching BB to complete the package, and be sure to get a BB with the correct threading for your FR frame.
