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Gear ratio help!

so I've been riding 46x18 for along time, and im thinking about gearing up. What's a good ratio to just cruise around the streets but then deal with hills here and there.
September 1, 2013 01:12 AM
48/49t with 18t or 17t
September 1, 2013 01:33 AM
I'll save you the trouble and say "do what's comfortable," before someone else says it rudely. No one can tell you what a good ratio for you and your knees will be.
September 1, 2013 10:43 PM
From: trenton,nj
160 posts
10 bikes
StevenP is right. You have to work it out yourself. Just do small changes at a time. Change to a 17t on the back. All you may need to adjust is your brake pad alignment. Or take a link out of your chain and do brake pads.
If you go for big rings on the front you'll need more chain. So the extra links need to be in the same condition as the exsisting chain. Or buy a new chain as well. Which now starts pushing the price up.
You can work out different ratios by chainring teeth divide by cog teeth. That's the ratio. If you times it by your wheel size in inches, that's gear inches. Pencil, paper and calculator and you can work out a table of ratios.
Or go to bikecalc.com enter in your numbers and it works it all out plus other stuff including skid patches if you need to know how many.
September 2, 2013 12:13 AM
From: Gold Coast. Australia
179 posts
2 bikes
48:17 will do...
September 2, 2013 12:45 AM
From: Street of Quezon City. Philippines
5 posts
2 bikes
46x17 , or 48x17 . should be fine for cruising and hitting the hills
September 2, 2013 12:05 PM
From: Malaysia
4 posts
1 bike
Pretty much everything has been said at this point by Steven and AK. There's also tons of old threads on this topic.
September 2, 2013 12:52 PM
From: Las Vegas, NV
34 posts
4 bikes
Well, are you able to deal with the hills currently? Your current gear ratio sounds good. A bigger gear won't make hills easier, so just go from there.
September 3, 2013 05:12 AM
From: San Diego, CA
780 posts
9 bikes
46x16 is great for me, I have a few considerable hills around town and it gets my heart pumping a bit, but I fly up the hills. Plus that way you don't have to replace both the cog and the chainring, which apparently most everyone else that's replying hasn't thought through. 46x17 would barely be a noticeable change. Just keep the chainring, and change the cog, it'll be much cheaper that way.
September 5, 2013 04:14 AM
From: Chicago, IL, United States
210 posts
11 bikes
It all depends on the riding moderate to medium climbs are okwith 48/16 plenty of speed down hill too but extreme climbs 48/19 or 46/19.
What are the surroundings of your area look like?
September 5, 2013 08:07 PM
Using 49/17 or 15 is pretty easy I live in somewhat flat areas with a couple hills and I don't struggle much. Maybe you should try it?:o
September 5, 2013 09:55 PM
From: San Fernando, Ca
89 posts
3 bikes
Spinning is winning. 80-100 RPM. You're meniscus will thank you
September 6, 2013 12:06 AM

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