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Old 11-09-08, 02:13 AM   #1
juturnal
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what kind of crankset are these?

I have a Steyr Clubman bike I guess its made in Austria...It comes with these cranksets

I made a fixed gear conversion out of it but the outer chainring is too large to bike with (52/16 ratio) I looked at the crankset and it has 3 bolts..most of the chainrings iv'e see has 5 screws. I searched online and only see the 5 screw chainrings too.I don't know what the crankset type is called so I can't do any further research on it. Do you guys know if they sell these kinds of chainrings anywhere online or at the LBS? I don't have time to go to my LBS and it's usually closed when I am available so I don't want to waste my time going there and getting rejected.
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Old 11-09-08, 03:07 AM   #2
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They're old steel cotter pinned cranks. I don't remember there ever being spare chain-rings for that style of cranks even in their day. The steel chain-rings on those cranks should last forever so there wasn't a need for spares.

Anthony
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Old 11-09-08, 08:01 AM   #3
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Use the inner chainring and go to a 14 or 15 on the back and you will be about right. On three of my SSs I have similar gears with a 40 to a 15 (Trek 460), 48 to 18 ( Schwinn Madison) and a 44 to a 16 (Van Dussel frame). The first two are exactly the same and all are about 70 gear inches. Roger
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Old 11-09-08, 08:03 AM   #4
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I believe it's a Stronglight. A friend's '72 Raleigh came with one of these and it weighed a TON. It's an all steel cottered crank and, as AnthonyG said, there probably aren't, and maybe never were, replacement chainrings. They would be C&V items even if you could get them since these cranks haven't been made in decades.

So there are two choices:1) use it with the inner (42T?) chainring and leave the 52T in place or 2) replace the entire crank and bottom bracket.

You would do well to replace the entire crank and bottom bracket with modern, much lighter ones. What I don't know is the bottom bracket threading so you or your LBS would have to determine what it is. Is there anything engraved on the bb cups that would indicate it's threading?
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Old 11-09-08, 09:21 AM   #5
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Originally Posted by juturnal View Post
I have a Steyr Clubman bike I guess its made in Austria...It comes with these cranksets

I made a fixed gear conversion out of it but the outer chainring is too large to bike with (52/16 ratio) I looked at the crankset and it has 3 bolts..most of the chainrings iv'e see has 5 screws. I searched online and only see the 5 screw chainrings too.I don't know what the crankset type is called so I can't do any further research on it. Do you guys know if they sell these kinds of chainrings anywhere online or at the LBS? I don't have time to go to my LBS and it's usually closed when I am available so I don't want to waste my time going there and getting rejected.
You need a new crankset/bottom bracket if you don't like your chainring choices on your current crank. No if and/or but's about it. The second thing is asking yourself whether or not this bike is worth such an upgrade. Polishing a turd doesn't make it any less a turd.
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Old 11-09-08, 12:38 PM   #6
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If the 52 X 16 is too "tall", get a larger rear sprocket. Try an 18T or some such. It helps to know the gear ratio you want, need or like. It is easy to figure out which rear sprocket will give you that ratio.

For example, I you know you like a 45 X 17, then get a 20T cog for use with your 52T chainring.

(45T/17T) = 2.65 52T/2.65 = 19.6T --> 20T (rounding off, in this case rounding up)

I am suggesting this approach assuming it is less expensive to replace the rear cog that it is to replace the bottom bracket, spindle and crankset and then need to find something other than a 52T chainring for the new crank. I could be wrong on this point.

Last edited by Mike Mills; 11-09-08 at 12:43 PM.
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Old 11-09-08, 04:54 PM   #7
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how would you remove these cranks i have the same set but cant get um off??

help please...
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Old 11-09-08, 05:05 PM   #8
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how would you remove these cranks i have the same set but cant get um off??

help please...
http://www.sheldonbrown.com/cotters.html
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Old 11-09-08, 05:11 PM   #9
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http://sheldonbrown.com/cotters.html
Destructive removal is also done with cuttoff wheel on an electric grinder.... use eye protection.
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Old 11-09-08, 07:13 PM   #10
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Cottered cranks can work very well for fixed gear. That's how it was done until the late sixties or so. Yours won't work because the big ring can't be moved and you'll never find a shorter spindle. a 52t ring is fine as long as you use the correct size cog. This one has a 22t EAI. It's my daughter's.

That Clubman frame is a bit heavy, but it will be fine. It's lighter than most old Schwinns. You might be able to find pictures of Clubman fixed gear conversions if you search the C&V Forum.

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Old 11-09-08, 11:58 PM   #11
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Okay, Dirtdrop, I'll bite.

Tell us everything you know about those pedals. Who makes them? Where'd you get them? Come on, dish!
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Old 11-10-08, 08:31 AM   #12
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The pedals are Lyotard 45's. The threads are French. They came from my '74 Peugeot PX10. They're so narrow that my foot hangs off the side of them. I put them on my daughter's bike and they're too narrow for her, too. Frenchmen must have dainty feet!
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Old 11-10-08, 10:30 AM   #13
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hmm...I read that cottered cranks are a pain so I guess i'll get a rear sprocket with more teeth...I just didn't want to dish out $30~$40 bucks on EAI since thats one of the few brands that carry such large cogs right?
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Old 11-10-08, 04:44 PM   #14
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Originally Posted by Dirtdrop View Post
The pedals are Lyotard 45's. The threads are French. They came from my '74 Peugeot PX10. They're so narrow that my foot hangs off the side of them. I put them on my daughter's bike and they're too narrow for her, too. Frenchmen must have dainty feet!
I've got similar pedal of a Japanese brand and they are just as narrow. The reason is that they were designed for riders using old fashioned cleats which raise the bottom of the shoe several mm from the pedal. They weren't really designed for use with standard shoes.

Anthony
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