Velopedia Bicycle Archive

2015 Sunday Blueprint 16

Original specifications: BMX mix drivetrain · 16 wheels · 21.73lbs published weight.

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At a glance

Archive #1227418

Model year: 2015
Category: Kids
Original MSRP: $220.00
Sizes: 16.5 TT
Weight: 21.73lbs
In this record: 20 specifications · original MSRP

Original build16.5" TT, Hi-Ten Frame · BMX mix · 16

Manufacturer catalog

Published sizes and colors

1 size

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

16.5 TT

Frameset

Frame Construction	welded
Frame Material	16.5" TT, Hi-Ten Frame
Fork	Blueprint 16" Fork
Fork Material	Steel

Drivetrain

Component Group	BMX mix
Crankset	140mm, 1-piece, Sunday , 30T, Steel
Bottom Bracket	19mm American
Rear Cogs	14t
Chain	KMC Z410
Pedals	Junior Pedals

Cockpit & Contact Points

Headset	Traditional 1-1/8"
Handlebar	6.8" x 23", 12° Back, 1° Up
Stem	Sunday Top-Load 40mm
Saddle	Junior Seat
Seatpost	1" Steel

Wheels & Tires

Hubs	Sunday, Low-Flange, Looseball, 20H, Unsealed 20H, Coaster Brake, 14T Cog
Rims	16" Rim, 20H
Spokes	Steel Black
Front Tire	Sunday Current 16 x 2.1" (F & R)
Wheel Size	16

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

Pedal cadence

RPM

Speed units

RPM = pedal turns per minute.

Published build30T · 14T

Ratio2.14:1

Estimated speed At 90 RPM Gear9.3 mph

Uses front tire 16×2.1; 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

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Gears Drivetrain

Front teeth Smallest rear teeth Largest rear teeth

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Rear tire marking

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

Rim diameter (BSD, mm) Tire width (mm)

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Cadence (RPM) Speed units

Gear, dimension and cadence changes update results automatically.

Gearing comparison
Measure	Original	Your setup
Lowest ratio	—	—
Highest ratio	—	—
Total range	—	—
Lowest-gear speed	—	—
Highest-gear speed	—	—

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications

Front tire · Original

Sunday Current 16 x 2.1" (F & R) Replacement search: 16x2.1 bicycle tire Before ordering: Check rim type and tire clearance.

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Seatpost · Original

1" Steel

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Parts and service referenceQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Front tire: Sunday Current 16 x 2.1" (F & R)
Drivetrain: BMX mix
Seatpost diameter: 25.4 mm
Bottom bracket / shell: 19mm American

Equipment inspection checks 9 checks based on 4 archived component groups Open equipment checksClose equipment checks

Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.

Full used-bike inspection guide →

Frame and fork

Inspect the frame and fork →

Archived: Frame: welded · Fork: Blueprint 16" Fork · Steel

Check paint damage, vent holes and accessible internal surfaces for corrosion. Look for dents, bent tubes and cracking around welded or brazed joints.
Inspect the fork crown, blades, dropouts and visible steerer area. Check that it is straight, securely installed and free of cracks or impact damage.

Drivetrain

Check drivetrain wear →

Archived: Group: BMX mix · Crankset: 140mm, 1-piece, Sunday , 30T, Steel · Bottom bracket: 19mm American · Rear cogs: 14t · Chain: KMC Z410

Shift through every available gear under light load. Hesitation, skipping or inconsistent indexing can reflect wear, damage, poor adjustment or mismatched replacement parts.
Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Wheels and tires

Check wheels and tires →

Archived: Wheel size: 16 · Rims: 16" Rim, 20H · Hubs: Sunday, Low-Flange, Looseball, 20H, Unsealed 20H, Coaster Brake, 14T Cog · Front tire: Sunday Current 16 x 2.1" (F & R)

Spin both wheels and watch for side-to-side and vertical movement. Check spoke tension, rim condition and hub play.
Inspect both tire casings for cuts, cracking, plugs, bulges or exposed threads and confirm the installed sizes are safe for the rims and available frame and fork clearance.

Controls and contact points

Archived: Headset: Traditional 1-1/8" · Handlebar: 6.8" x 23", 12° Back, 1° Up · Stem: Sunday Top-Load 40mm · Seatpost: 1" Steel · Saddle: Junior Seat · Pedals: Junior Pedals

Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure.
Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

2015 Sunday Blueprint 16