Old 04-04-11 | 02:42 PM
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Gao Jian
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Joined: Mar 2011
Posts: 69
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From: MKE, WI

Bikes: Viva extravaganza LTD

replace the chainring or replace the cog?

Hey guys,
I picked up a Kona Paddy Wagon for bombing around the city and have really been enjoying the ride. The Kona replaced an older Fuji frame that was converted to fixed gear cause it didn't quite fit me right. I kinda wish I would have just built a bike from scratch to really learn my way around my machine, but the deal was too good to pass up, so I jumped. Although, after looking at all these nice bikes on here I don't think it will be long till I pick up a project bike. Anyway, I digress...

The bike came setup with a 42T/16 setup and it just feels slow without me mashing on the pedals all the time. My old Fuji had 165mm crank arms and a 46t sprocket, on the back was a 15t cog... it was great for flat land but hitting the hills was a pain. I am looking at replacing either the chainring or the COG for a different ratio and I wanted some thoughts on the overall gain of doing either of those options. I was looking on Rabbit cycle calculator as was thinking that a gear ratio of 5.4 (roughly 75 inches) would be a happy medium.

If I get a 15t cog then I would gain the gear ratio that I'm looking for, but the number of skid patches reduces significantly, but going to a 46t Chainring sounds a bit more expensive. I would love to hear what you guys have to say.


Forgive me if this post doesn't make sense and take it easy on me...I'm trying to learn.
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