Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Identity & price

    These bicycles are categorized differently: 2010 Rocky Mountain RC 30 is Road; 2012 Rocky Mountain RC 30 is City & Commuter.

  2. Data limitation

    No geometry is recorded for 2010 Rocky Mountain RC 30 and 2012 Rocky Mountain RC 30.

  3. Gearing

    2012 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.

2010 Rocky Mountain RC 3052/42/30T · 11–32T · 8-speed
Lowest0.94:1Highest4.73:1Total range504%
Estimated speed at 90 RPMLowest gear6.8 mphHighest gear34.2 mph

Uses front tire 700C×32; rear size isn’t listed.

2012 Rocky Mountain RC 3048/38/28T · 11–32T · 9-speed
Lowest0.88:1Highest4.36:1Total range499%

Speed unavailable: wheel or tire size is missing or unclear.

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.

Try other gearing

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.
Print / PDFCSV
Specification
2010 Rocky Mountain RC 30
2012 Rocky Mountain RC 30
Overview
Model Year
2010
2012
Brand
Rocky Mountain
Rocky Mountain
Model
RC 30
RC 30
Bicycle Type
Road/sport
City/Commuter
Colors
Black
Blue
Sizes
40cm, 45.5cm, 50cm, 55.5cm, 58cm
40cm, 45.5cm, 50cm, 55.5cm, 58cm
Weight
—
—
Frameset
Frame Construction
TIG-welded/bonded
—
Frame Material
RMB Form 7005 Alloy Super Triple Butted w/Delta Moulding
RMB 6061 Alloy
Fork
—
RMB Cromo Road
Fork Material
Alloy, unicrown crown
—
Drivetrain
Component Group
Flat Bar Road Mix
—
Shifters
Shimano ST-221
Shimano Acera, 9spd Rapidfire
Front Derailleur
Micor-Shift FD-439, braze-on w/34.9 clamp adaptor
Shimano Acera
Rear Derailleur
Shimano Deore
Shimano Alivio 9spd
Crankset
RMB RM-S52 Alloy Arm, 30/42/52 teeth
Shimano M391 48/38/28t
Bottom Bracket
Cartridge TH 7420
Shimano UN-26
Cassette
Shimano HG30
Shimano HG30 9spd 11-32t
Rear Cogs
8-speed, 11 - 32 teeth
—
Chain
Shimano HG50
Shimano HG-53
Pedals
VP 990S Steel Cage
RMB City Steel Cage
Brakes
Brakes
Tektro 837AL V-brake brakes, Shimano ST-221 levers
Promax TX-122
Cockpit & Contact Points
Headset
Fsa
Cane Creek Five Series
Handlebar
FSA XC 300, 620mm x 20mm
RMB Six20
Handlebar Extensions
Not included
—
Stem
RMB 7-degree flip/flop
RMB XC7
Saddle
Rocky Mountain
RMB Urban Light
Seatpost
RMB, 31.6mm diameter
RMB L2B
Wheels & Tires
Hubs
Wheeltech Disc Super Sealed W/Alloy QR
Shimano RM40 Shimano RM30
Rims
Alex DC-19
—
Spokes
Stainless, aero
—
Front Tire
700 x 32c Kenda Kwick Roller Sport
Kenda Kwest 700x32
Wheel Size
700c wheels
—

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

Campaign
Scroll to Top