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Old 11-09-09, 06:31 PM   #1
YoKev
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What bike used a HUGE inch pitch chainring?

I was working out in the woods today, and I found this in a metal pile. No bike unfortunately

The crank arm is 7" long, and the pedal spindle is still attached/fused to it. The bottom bracket is still attached as well, and it looks like an appropriate width for a bicycle. It has 30 teeth (including the rusted off one). The ring is 9.5" in diameter from tooth to tooth, compared with a 48 tooth Rudge which is 7.75" in diameter measured the same way.

Anyhow, enjoy the pictures



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Old 11-09-09, 06:36 PM   #2
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That chain ring type looks familiar...

In the shop we have a large selection of vintage rings hanging on the walls, but I can't seem too figure out what type it is. Hit that thing with some acid though... dang.
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Old 11-09-09, 06:47 PM   #3
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I am pretty sure that what you have is a skip link sprocket. Time period - perhaps late 40's to 50's. The chains consisted of a short link/long link combination, alternating. Tell you the truth, I really do not know why this combination was made or used for, but hopefully someone wiser can answer this .
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Old 11-09-09, 06:49 PM   #4
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Skiptooth chains were very common on middle and heavyweight pre war bikes. Typically American ballooners. I can't say I've ever seen one with a "three piece" crank though...typically they were ashtaluba type cranks. Check out www.ratrodbikes.com to check out more about them.
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Old 11-09-09, 06:56 PM   #5
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That's a huge ring
30 teeth on an inch pitch is 60 teeth on a modern 1/2in pitch ring
Might have been from an old American track bike at that size.
-Gene-
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Old 11-09-09, 07:01 PM   #6
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Nice selection of chainring pictures

http://www.bikecult.com/works/chainwheel.html
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Old 11-09-09, 07:06 PM   #7
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That type of crank is pre-war and number of teeth is huge for a skip tooth... I would agree that it would have been used on a performance bike of some kind.
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Old 11-09-09, 07:18 PM   #8
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Might have been used on a track bike(Stayer) made for pacing behind a motorbike.
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Old 11-09-09, 07:29 PM   #9
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Quote:
Originally Posted by bbattle View Post
Nice selection of chainring pictures

http://www.bikecult.com/works/chainwheel.html
Cool pictures! That page has pictures of even bigger rings

It certainly is neat! I'm glad I rescued it
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Old 11-09-09, 07:52 PM   #10
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There is a truly ancient Schwinn hanging from the ceiling of a junk shop around here that has a similar crank and chainwheel.

Maybe I'll stop by tomorrow and see if they still have it, might be a match.
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Old 11-10-09, 04:56 AM   #11
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They were relatively common on track bikes, even into the sixties. Well, in the UK you could still find ads and references to them. I never knew anyone who rode with an inch pitch chain but I remember being impressed with the thought of fitting one to my Carlton Flyer track bike. Sadly at that time the cost was out of the question. Who said money is wasted on the old?
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Old 11-10-09, 10:48 AM   #12
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What excatly is a "Hipster", ? Please explain
post 59. : ]
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Old 11-10-09, 12:51 PM   #13
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That is a chain ring from a bike called a Racycle (Racecyle?) from about 1915ish. Roger
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Old 11-10-09, 01:24 PM   #14
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Yep, Racycle. This picture represents a 1908 model. Too bad the bike wasn't attached to it!

http://lh5.ggpht.com/_9tq2Rh0MMc8/Sa...ycle_135_D.JPG

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Old 11-11-09, 07:52 AM   #15
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So, Kevin... did you tell your wife you want a metal detector for Christmas?
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