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.
- Data limitation
No geometry is recorded for 1998 Ross Pronto.
- Gearing
1996 Ross Pronto has a 33% lower climbing ratio than 1998 Ross Pronto.
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.
Ratio2.31:1
Estimated speed at 90 RPMGear
Uses front tire 12×2; rear size isn’t listed.
Ratio1.56:1
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
1998 Ross Pronto
1996 Ross Pronto
Overview
Model Year
1998
1996
Brand
Ross
Ross
Model
Pronto
Pronto
Bicycle Type
Juvenile
Juvenile
Original MSRP
$89.95
$99.95
Colors
Metallic blue
Dark blue
Sizes
Boys
Girls 9"
Weight
—
—
Frameset
Frame Construction
Welded
TIG-welded steel
Frame Material
Hi-tensile steel
Hi-tensile steel
Fork
Ross
Ross
Fork Material
Hi-tensile steel, unicrown crown
Hi-tensile steel, unicrown crown
Drivetrain
Crankset
Steel, 30 teeth
1-piece 4", 28 teeth
Bottom Bracket
One piece
Wald
BB Shell Width
American
68mm Threadless
Rear Cogs
1-speed, 13 teeth
1-speed, 18 teeth
Chain
1/2 x 1/8"
KMC 410, 1/2 x 1/8"
Pedals
Resin
Fasten NW-90B
Brakes
Brakes
Coaster brake
Coaster brake
Cockpit & Contact Points
Headset
1" steel
1" Victor VP-H93 sealed
Handlebar
Steel
BMX steel
Handlebar Extensions
Not included
—
Stem
Steel
BMX steel
Saddle
BMX
Ross BMX
Seatpost
Pillar, steel, 22.2mm (7/8 inch) diameter
Steel, 22.2 mm (7/8 inch) diameter
Wheels & Tires
Hubs
Front: steel, nutted, Rear: coaster brake w/training wheels
—
Rims
—
Mag wheels
Spokes
Reinforced nylon, molded
Reinforced nylon, molded
Front Tire
12 x 2.0"
12" Ross BMX
Wheel Size
12" wheels
12" wheels
Geometry · choose a size for each bicycle
Geometry size
—
Head-tube angle
—
67°
Seat-tube angle
—
69°
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.