Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Identity & price
These bicycles are categorized differently: 2013 Rocky Mountain RC 30 is City & Commuter; 2010 Rocky Mountain RC 30 is Road.
- Data limitation
No geometry is recorded for 2013 Rocky Mountain RC 30 and 2010 Rocky Mountain RC 30.
- Gearing
2013 Rocky Mountain RC 30 has a 7% lower climbing ratio than 2010 Rocky Mountain RC 30.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest0.88:1Highest4.36:1Total range499%
Speed unavailable: wheel or tire size is missing or unclear.
Lowest0.94:1Highest4.73:1Total range504%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×32; rear size isn’t listed.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
Specification
2013 Rocky Mountain RC 30
2010 Rocky Mountain RC 30
Overview
Model Year
2013
2010
Brand
Rocky Mountain
Rocky Mountain
Model
RC 30
RC 30
Bicycle Type
City/Commuter
Road/sport
Colors
Black/White
Black
Sizes
40cm, 45.5cm, 50cm, 55.5cm, 58cm
40cm, 45.5cm, 50cm, 55.5cm, 58cm
Weight
—
—
Frameset
Frame Construction
—
TIG-welded/bonded
Frame Material
Aluminum
RMB Form 7005 Alloy Super Triple Butted w/Delta Moulding
Fork
Chromoly
—
Fork Material
—
Alloy, unicrown crown
Drivetrain
Component Group
—
Flat Bar Road Mix
Shifters
Shimano Acera
Shimano ST-221
Front Derailleur
Shimano Acera
Micor-Shift FD-439, braze-on w/34.9 clamp adaptor
Rear Derailleur
Shimano Alivio
Shimano Deore
Crankset
Shimano M391 48/38/28t
RMB RM-S52 Alloy Arm, 30/42/52 teeth
Bottom Bracket
Square Taper
Cartridge TH 7420
Cassette
Shimano HG30 11x32t
Shimano HG30
Rear Cogs
3x9 Speeds
8-speed, 11 - 32 teeth
Chain
KMC X9
Shimano HG50
Pedals
Alloy Platform
VP 990S Steel Cage
Brakes
Brakes
Promax TX122 V-Brake
Tektro 837AL V-brake brakes, Shimano ST-221 levers
Cockpit & Contact Points
Headset
Cane Creek Five ZS
Fsa
Handlebar
Rocky Mountain Flat
FSA XC 300, 620mm x 20mm
Handlebar Extensions
—
Not included
Stem
Rocky Mountain
RMB 7-degree flip/flop
Saddle
Rocky Mountain Urban
Rocky Mountain
Seatpost
Rocky Mountain L2B
RMB, 31.6mm diameter
Wheels & Tires
Hubs
—
Wheeltech Disc Super Sealed W/Alloy QR
Rims
—
Alex DC-19
Spokes
—
Stainless, aero
Front Tire
Vittoria Zaffiro 28c
700 x 32c Kenda Kwick Roller Sport
Wheel Size
—
700c wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.