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RockRider 6.3 Increase top speed by replacing cassette/chainset ?

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RockRider 6.3 Increase top speed by replacing cassette/chainset ?

Old 09-10-14, 02:27 AM
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carmamir
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RockRider 6.3 Increase top speed by replacing cassette/chainset ?

I have RockRider 6.3 with Suntour XCT 22x32x42 chainset and 9 speed SRAM ESP 5.0 cassette, 11x34.


I would like to improve top speed of this bike by changing chainset and cassette.

However I can't find any faster cassette than 11x XX, is there anything like 10-28 or 9-28 ??? I've checked on calculator and it seems that it would give me highest increase in top speed...


I already thinking about replacing my 26" for 29" (along with suspension forks for 29") in order to maximize gain of top speed.
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Old 09-10-14, 06:52 AM
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RIC0
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Pedal harder an you'll go faster not sure why your trying to increase speed I find it VERY hard to believe your topping out your gearing on your bike on flat ground.
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Old 09-10-14, 09:17 AM
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11t is the smallest gear you can fit on a standard free-hub. Your only option would be a larger chainring.

Having said that...pedal faster. Higher RPM will give you more speed, the only time you're likely spinning out with that gearing is on downhills where it doesn't really matter.
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Old 09-10-14, 12:56 PM
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When I run 1.5" tires on a 26er for road and dirt-road riding I like to put a road crank on there. 53/42 on the Grey Goose. I've kept it on for STXC and CX too. All STXC in the little ring, a bit of big ring use on one CX course so far.

Some MTB FDs handle this better than others, so you may need a new one if existing one balks on the big rings. Front shifting is wack but you get used to it. Might be better with a road front derailleur but I haven't tried that yet.

42x11 on 1.5" takes me to 44mph at 120rpm. Only a couple of downhills around here where I'll use that.
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Old 09-10-14, 10:10 PM
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carmamir
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Originally Posted by RIC0 View Post
Pedal harder an you'll go faster not sure why your trying to increase speed I find it VERY hard to believe your topping out your gearing on your bike on flat ground.

Well actually my gears are kind a short for me, that's why I'm changing some parts in order to achieve higher speedm
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Old 09-11-14, 11:34 AM
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Originally Posted by carmamir View Post
Well actually my gears are kind a short for me, that's why I'm changing some parts in order to achieve higher speedm
so you are going 40mph on a regular basis? your guads must be HUGE! You should change your screen name to MEGAWATT.
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Old 09-11-14, 11:40 AM
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42x11 is 34 mph at 100 rpm on 26x2.0"

I never seriously consider pedallng over 100 rpm on anything but a fixed gear.

But yeah, I don't think the "upgrade" is worth it unless you get parts for free.
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Old 09-11-14, 12:05 PM
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Sugino Impel Triple Crankset > Components > Drivetrain > Cranksets | Jenson USA

28-38-48 rings. Higher top-end in every ring. That will give you some of the results you're looking for, though I still agree with everyone else, hard to believe you're maxing that out so much that you need to change it.
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