gearing
danw2012
Posts: 3
just started road cycling
i currently have a giant defy 2 '12 with a 12 - 30 cassette and 50/34 on the front
on the downhill and flat i contently spin out the uphills are great but there's not many around my way
what is a better set up
not to sure with a 50/39 and a 11 -25 cassette
i currently have a giant defy 2 '12 with a 12 - 30 cassette and 50/34 on the front
on the downhill and flat i contently spin out the uphills are great but there's not many around my way
what is a better set up
not to sure with a 50/39 and a 11 -25 cassette
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Comments
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what cadence do you 'spin out' at? if it's below 100rpm then you'd do better to practice pedalling faster
with 50/12, even at 90rpm you'd be doing nearly 48kph/30mph, at 100rpm you'd be doing about 53kphmy bike - faster than god's and twice as shiny0 -
If you went from 50/34 to 50/39 up front surely you just have more gear overlap?, so fairly pointless as far as I can tell.
not sure if its worth going form 12-30 to 11-25 either, whats the calcs on that anyone? the gears would be closer together I guess so more changes for you.
How can there be downhills and not uphills? lol.
Sounds like its mostly flat your way, Norfolk by any chance?! so surely as sungod said 50/12 should be more than enough unless your Wiggins.0 -
sorry ment to say 54/39
no im in newcastle
i did say the uphills are great buts its pretty much flat all the way to work
like i said new to all of this
when im in my 12 AND 54 it reads as about 28 mph but i think i can get more out of it if i had a couple of more gears in there
maybe my computer is wrong0 -
if your in 12 & 54 doing 28mph it may be worth working on your cadence an 11 cassette will make little difference. get used to spinning your legs faster and you will see higher speeds and less spinning out.0
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You won't be spinning on at 50/12 unless 'spinning out' is 85RPM to you. If you're doing 35MPH+ then you've probably better off tucking and freewheeling down anyway.
Ideal gearing setup for you if you want a bit more kick with a 50/34 is a 11/25 cassette. I race on it and find it gives me the extra umpfh down hill but still some options uphill and I don't really miss the gear in the middle I loose from changing from 12/25.0 -
54 on the front would be ridiculous, you're not a time trialer.0
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play with this gear calculator to hearts content--helsp work out what gearing you may need given your riding style and terrain
http://www.gear-calculator.com/#
90 rpm on a 53 / 12 is 30 mph btw0