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 2009 Diamondback Impression and 2011 Diamondback Impression.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Ratio2.00:1
Estimated speed at 90 RPMGear
Uses front tire 20×1.75; rear size isn’t listed.
Ratio2.00:1
Estimated speed at 90 RPMGear
Uses front tire 20×1.75; 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
2009 Diamondback Impression
2011 Diamondback Impression
Overview
Model Year
2009
2011
Brand
Diamondback
Diamondback
Model
Impression
Impression
Bicycle Type
Juvenile
Juvenile
Colors
Gloss Teal
Snow white
Sizes
—
20" Miss Sidewalk
Weight
—
—
Frameset
Frame Construction
TIG-welded
Steel
Frame Material
High-Tensile steel
Hi-Ten Remington Steel
Fork
—
Hi-Ten Remington
Fork Material
High-tensile steel, unicrown crown
Steel
Drivetrain
Component Group
Juvenile Mix
Juvenile Mix
Crankset
1-piece, 36 teeth
1-piece, 36T teeth
Bottom Bracket
Loose ball
Loose ball
Cassette
Cog
Cog
Rear Cogs
1-speed, 18 teeth
1-speed, 18 teeth
Chain
—
KMC Z410
Pedals
Resin platform
Resin platform
Brakes
Brakes
Alloy Linear Pull/Coaster Brake rear brakes, Alloy linear rear levers
Alloy linear brakes, Alloy linear levers
Cockpit & Contact Points
Headset
1" Threaded
1" Threaded
Handlebar
Hi-Ten 2-piece
Hi-Ten 2-piece
Handlebar Extensions
Not included
Not included
Stem
Steel quill
Steel Quill w/ Alloy Cap
Saddle
DB Miss BMX Padded
DB Miss BMX Padded
Seatpost
Steel pillar, 25.4mm diameter
Steel pillar, 25.4mm diameter
Wheels & Tires
Hubs
Front: Nutted, Rear: Nutted Coaster
Nutted
Rims
Alex R-1000, 36-hole
R-1000 Alloy, 36-hole
Spokes
14ga. (2.0mm)
14ga. (2.0mm)
Front Tire
20 x 1.75" DB Smooth
20 x 1.75" DB Smooth
Wheel Size
20" wheels
20" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.