Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 23 Post(s)
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Quoted: 921 Post(s)
That's an Ashtabula crank, or a knock off of one. They were SOP on American bikes for decades, then relegated to juvinile and BMX bikes only. yor remove them by removing the large lock nut cone on the left side of the crank/bottom bracket, then snaking it out to the right. Be sure to remove the pedals first, otherwise you'll be up the creek.
You can save yourself some dough by looking for an SS or BMX chainring to fit the crank (they're very common) and keeping it in service. The BB is very simple to service and durable.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance