Originally Posted by
wheels78
I've got an old Shimano FC-M452 crank with the bio-space rings. They're pretty worn. I like the cranks just fine even though they're old. I'm assuming it will accept round chainrings. It's a 5 bolt. The BDC is 110 and I'd like to put on 22-32-44, or thereabouts.
Any reason I can't (or shouldn't) put new rings on it (as opposed to getting a new modern crankset package)? ---A recommendation for a source of the rings?
If it matters, the bike is a 2011 Jamis Coda, When I bought it I removed the crappy cranks that came stock and put on the better-quality old cranks. I've been riding it on a regular basis ever since. Figured there's no reason the Coda wouldn't double as a touring bike with the right gears on it.
Thanks,
There are several sources for chainrings with a 110mm BCD. Compact doubles often use the 110mm BCD. One place to look is at
Vuelta but there are others as well. These rings are round. And, as zze86 points out, you aren't likely to be able to go to a 22 tooth inner.
Astoundingly, if you search "110mm BCD Biopace chainrings", you can even find lots of NOS biopace rings...weird!
One note of caution, however, a whole ring set is not cheap in any size. For the Vuelta, you are going to be paying around $100 for 3 rings. That's significantly on the way to the cost of a new crank set...perhaps more. A new external bottom bracket Deore 44/34/22 9 speed crank can be had for from $75 to $110.