1982 Diamond Back Ridge Runner
The Diamond Back Ridge Runner was the first
production mountain bike manufactured by Centurion
in Japan. Both the Ridge Runner and the Specialized
Stumpjumper were the first two production mountain
bike made in the world.
The Ridge Runner was Diamond Backs only lugged
Champion 5 Chromalloy triple butted frame. Its
was the highest quality production mountain
bike in its time. This
frame was hand built.
After 1 to 2 years it was replaced with the
lesser quality, 1983/84 Ridge Runner II. The Ridge
Runner II was a TIG welded, non lugged, Cr-Mo 4130
double butted frame manufactured in Taiwan and was
mass produced.
The geometry of the frame had an extra long rear
triangle which made it very stable on the trail. It
had all the braze on mounts for touring racks,
fenders, and 2 water bottle cages. The first
production run had rack mounts at the base of the
front fork and in the middle of the fork. The second
production run only had brazeons on the bottom of
the fork.
It was released in two two-toned combinations,
black with silver trim, and silver with black trim.
The frame area surrounding the dropouts is
painted over chrome plating.
The diamond shaped handle bars are unique to
Diamond Backs and the Ridge Runner is the only model
where the bars incorporated a brake cable stay.
   
(What makes this bike unique.)
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Specifications
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Manufacture: |
Diamond Back |
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Model: |
Ridge Runner |
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Production
Year |
1982-1983 |
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Made in: |
Japan |
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Original MSRP: |
$448 |
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Material Type: |
Prestige 5
Cr-Mo |
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Tubing: |
Triple Butted |
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Welding Type: |
Lugged / TIG |
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Color: |
Black |
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Decal Type: |
Silk-screened |
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Size of Frame: |
21-inch |
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Frame Weight: |
8 pounds |
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Fork Weight: |
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Assembled
Weight: |
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Dropouts: |
Suntour -
Horizontal |
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Bottle Mounts: |
2 qty |
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Touring
Mounts: |
Yes |
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Serial Number: |
N6D5273 |
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Component
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OEM
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Description
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Brake Levers: |
Yes |
Dia-Compe 280
motorcycle style levers |
|
Front Brakes: |
Yes |
Dia-Compe 980
cantilever |
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Rear Brakes: |
Yes |
Dia-Compe 980
cantilever |
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Front
Derailleur: |
Yes |
Suntour
Mountech, down pull |
|
Rear
Derailleur: |
Yes |
Suntour Superb
Tech, front pull |
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Shifters: |
Yes |
Suntour Power
Thumb, friction ratchet style |
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Cranks: |
Yes |
Sugino AT,
180mm, triple, 110/94, BCD 5-hole,
taper |
|
Chainrings: |
Yes |
Sugino,
circular 46/36/26, 110/94, BCD
5-hole |
|
Bottom
Bracket: |
Yes |
Suntour sealed
cartridge bearing, English 68/127mm,
black |
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Pedals: |
Yes |
Suntour XC-II
Bear Claw, 9/16-inch thread, sealed
ball bearing (1st edition) |
|
Rims: |
Yes |
Araya,
26x1.75, 26-inch, 36-hole |
|
Hub-Front: |
Yes |
Suzue,
36-hole, high flange, sealed
cartridge bearing, bolt on |
|
Hub-Rear: |
Yes |
Suzue,
36-hole, high flange, sealed
cartridge bearing, bolt on |
|
Cassette: |
Yes |
Suntour
Winner, 5-speed, freewheel |
|
Chain Guard: |
Yes |
Suntour,
polished tin |
|
Spokes |
Yes |
Single butted
zinc |
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Headset: |
Yes |
Tange
Industries, 1-inch, anodized black |
|
Forks: |
Yes |
Tange 2K,
1-inch, Chromalloy |
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Handle Bars: |
Yes |
One piece,
chrome plated steel, diamond shaped
center, (Unique to DB Ridge Runner
only) |
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Neck: |
N/A |
None |
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Seat: |
Yes |
Centurion |
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Seat Post: |
Yes |
Laprade SR,
26.6mm |
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Seat Post
Bolt: |
Yes |
Suntour Quick
Release |
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