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
2018 Cannondale Scalpel-Si 5 has a 9% lower climbing ratio than 2019 Cannondale Scalpel-Si 5.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
Selected-size geometry
Geometry overlay
Frames share one scale and a bottom-bracket alignment. Size labels differ by brand; schematic drawing aids are identified below.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest0.62:1Highest3.27:1Total range529%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 29×2.25.
Lowest0.68:1Highest3.40:1Total range500%
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.
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
2018 Cannondale Scalpel-Si 5
2019 Cannondale Scalpel-Si 5
Overview
Model Year
2018
2019
Brand
Cannondale
Cannondale
Model
Scalpel-Si 5
Scalpel-Si 5
Bicycle Type
Mountain
Mountain
Colors
Matte Jet Black w/ Gloss Jet Black and Ultra Blue - Matte (BLK)
Jet Black w/ Volt - Gloss (VLT)
Sizes
S (27.5"), M (29"), L (29"), XL (29")
S, M, L, XL
Weight
—
—
Frameset
Frame Construction
Scalpel-Si, 100mm, SmartForm C1 Alloy, Zero Pivot seatstay, Carbon Link, PF30, 1.5 Si head tube, Ai Offset
Scalpel-Si, 100mm, SmartForm C1 Alloy, Zero Pivot seatstay, Carbon Link, PF30, 1.5 Si head tube, Ai Offset
Frame Material
Carbon
Carbon
Fork
Lefty 2.0 Alloy OPI, 2Spring, 100mm, PBR Isolated Damper Technology with XC+ tune and updated controls, 55mm offset (29), 50mm offset (27.5)
ALL-NEW Lefty Ocho, 27.5/29”, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 50/55mm offset
Fork Material
Aluminum
—
Rear Shock
RockShox Monarch RL, 100mm
RockShox Monarch RL, 100mm
Drivetrain
Shifters
SRAM S Series, 2x11
SRAM NX Eagle, 12-speed
Front Derailleur
Shimano XT, side swing
—
Rear Derailleur
SRAM GX, 11-speed
SRAM NX Eagle
Crankset
Cannondale Si, BB30, 36/26 CNC Rings
Truvativ Stylo 6K, 34T, Ai Custom
Bottom Bracket
Cannondale Alloy PressFit30
Cannondale BB30
Rear Cogs
SRAM PG-1130, 11-speed, 11-42
SRAM PG-1230, NX Eagle, 10-50, 12-speed
Chain
SRAM 11-speed
SRAM NX Eagle, 12-speed
Pedals
—
Not Included
Brakes
Brakes
Shimano Deore MT500 hydro disc, 180/160mm
Shimano MT500 hydro disc, 180/160mm RT56 rotors
Cockpit & Contact Points
Headset
Cannondale HeadShok Si
Cannondale HeadShok Si
Handlebar
Cannondale C2 flat, Butted AL2014 Alloy, 760mm
Cannondale C3 Flat, 6061 double-butted Alloy, 8° sweep, 760mm
Stem
Cannondale C1, 6061 Alloy, 1.5”, 31.8, -5°
Cannondale C3, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 7°
Saddle
Prologo K3
Fabric Scoop Shallow Sport, steel rails
Seatpost
Cannondale C3, Micro Adjust, 6061 Alloy, 31.6x350mm (XS,S,M) 400mm (L,X)
Cannondale C3, 6061 Alloy, 31.6 x 400mm
Wheels & Tires
Hubs
Lefty 60 front, Formula DHT-142x12, (Ai Offset dish - Rear)
Lefty 60 front, Formula 12x142 rear w/ HG driver
Rims
Stan’s NoTubes Crest S1, 32 hole, tubeless ready
WTB STX i23 TCS, 28h, tubeless ready
Spokes
DT-Swiss Champion (Ai Offset dish - Rear)
DT Swiss Champion (Ai Offset dish - rear)
Front Tire
Schwalbe Racing Ralph Performance, 29x2.25”, folding
Schwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless ready
Rear Tire
Schwalbe Racing Ralph Performance, 29x2.25”, folding
Schwalbe Racing Ray Performance 27.5/29 x 2.25” front, Racing Ralph Performance 2.25” rear, Addix compound, tubeless ready
Wheel Size
29"
29"
Geometry · choose a size for each bicycle
Geometry size
Reach
424 mm
424 mm
Stack
592 mm
592 mm
Effective top tube
599 mm
599 mm
Head-tube angle
69.5°
69.5°
Seat-tube angle
73.5°
73.5°
Seat tube
440 mm
440 mm
Head tube
110 mm
110 mm
Chainstay / rear center
435 mm
435 mm
Wheelbase
1118 mm
1118 mm
Bottom-bracket drop
38 mm
38 mm
Bottom-bracket height
334 mm
334 mm
Standover height
754 mm
754 mm
Fork offset / rake
55 mm
55 mm
Front center
685 mm
685 mm
Trail
77 mm
77 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.