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.
- Gearing
1997 Rocky Mountain Fusion has a 7% lower climbing ratio than 1998 Rocky Mountain Fusion.
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.
Lowest0.79:1Highest3.82:1Total range486%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×2.1; rear size isn’t listed.
Lowest0.73:1Highest3.82:1Total range521%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×1.95; 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
1998 Rocky Mountain Fusion
1997 Rocky Mountain Fusion
Overview
Model Year
1998
1997
Brand
Rocky Mountain
Rocky Mountain
Model
Fusion
Fusion
Bicycle Type
Mountain bike, front suspension
Mountain bike, non-suspension
Original MSRP
$699.00
$699.00
Colors
Purple
Silver
Sizes
14", 16", 17.5", 18.5", 19.5", 20"
14.5", 16", 17.5", 18.5", 19.5", 21"
Weight
26.4 lb
25.4 lb
Frameset
Frame Construction
Welded
TIG-welded
Frame Material
Chromoly, double-butted
Tange chromoly, double-butted
Fork
Rock Shox Indy
Rmb
Fork Material
Aluminum/magnesium, triple-clamp crown
Chromoly, unicrown crown
Drivetrain
Component Group
Mountain Mix
Shimano STX
Shifters
Grip Shift ESP 500
Grip Shift SRT-400i
Front Derailleur
Shimano STX top-swing, top-pull/clamp-on 31.8mm
Shimano STX top-swing, top-pull/clamp-on 28.6 mm
Rear Derailleur
Grip Shift ESP 7.0
Shimano Deore LX SGS
Crankset
Shimano Alivio, 22/32/42 teeth
Cyclone CPI, 22/32/42 teeth
Bottom Bracket
Shimano BB-LP26
Shimano BB-LP26, 110 mm spindle
BB Shell Width
—
68mm English
Rear Cogs
7-speed, 11 - 28 teeth
7-speed, 11 - 30 teeth
Chain
Taya TB-600, 1/2 x 3/32"
Sachs SC-40, 1/2 x 3/32"
Pedals
Aluminum cage w/clips & straps
Fasten Sport w/clips & straps
Brakes
Brakes
Avid 1D-20 brakes, Avid AD-1.0 levers
Shimano Deore LX V-Brake brakes, Avid SD-1.9 levers
Cockpit & Contact Points
Headset
1 1/8" threadless Ritchey Logic
1 1/8" threadless Ritchey Logic
Handlebar
RMB aluminum
RMB aluminum
Handlebar Extensions
Not included
Not included
Stem
RMB forged aluminum
RMB aluminum
Saddle
Selle Italia Aventgarde 1
Selle Italia
Seatpost
RMB aluminum
RMB aluminum, 26.8 mm diameter
Wheels & Tires
Hubs
Shimano Alivio
Shimano STX
Rims
Sun Rims CR18
Sun Rims DW 6000, 32-hole
Spokes
DT stainless steel, 2.0mm straight gauge
DT stainless steel, 1.8mm straight gauge
Spoke Nipples
—
Brass nipples
Front Tire
26 x 2.10" Ritchey Mega-Bite Z-Max SC
26 x 1.95" Ritchey Alfa Bite
Wheel Size
26" wheels
26" wheels
Geometry · choose a size for each bicycle
Geometry size
Head-tube angle
70.5°
70.5°
Seat-tube angle
73.5°
73°
Chainstay / rear center
—
430 mm
Wheelbase
—
1049 mm
Fork offset / rake
40.6 mm
38.9 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run. Legacy reference geometry is model-level historical data whose corresponding frame size is not identified; compare those dimensions as reference values rather than size-normalized fit data.