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. Data limitation

    No geometry is recorded for 1998 Ross Pronto.

  2. 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.

1996 Ross ProntoSize Legacy reference · 28T · 18T · 1-speed
Ratio1.56:1

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

1998 Ross Pronto30T · 13T · 1-speed
Ratio2.31:1
Estimated speed at 90 RPMGear7.4 mph

Uses front tire 12×2; 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.

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.
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Specification
1996 Ross Pronto
1998 Ross Pronto
Overview
Model Year
1996
1998
Brand
Ross
Ross
Model
Pronto
Pronto
Bicycle Type
Juvenile
Juvenile
Original MSRP
$99.95
$89.95
Colors
Dark blue
Metallic blue
Sizes
Girls 9"
Boys
Weight
—
—
Frameset
Frame Construction
TIG-welded steel
Welded
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
1-piece 4", 28 teeth
Steel, 30 teeth
Bottom Bracket
Wald
One piece
BB Shell Width
68mm Threadless
American
Rear Cogs
1-speed, 18 teeth
1-speed, 13 teeth
Chain
KMC 410, 1/2 x 1/8"
1/2 x 1/8"
Pedals
Fasten NW-90B
Resin
Brakes
Brakes
Coaster brake
Coaster brake
Cockpit & Contact Points
Headset
1" Victor VP-H93 sealed
1" steel
Handlebar
BMX steel
Steel
Handlebar Extensions
—
Not included
Stem
BMX steel
Steel
Saddle
Ross BMX
BMX
Seatpost
Steel, 22.2 mm (7/8 inch) diameter
Pillar, steel, 22.2mm (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" Ross BMX
12 x 2.0"
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.

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