Back

1994 Diamondback Apex

a large 1994 Diamond Back mountain bike with evergreen job leans against a garage. The bike has flat bars, knobby 26" tires, and is glimmering in the sun. 1994 Diamond Back Mountain Bike Catalog page featuring the Apex.

A $120 craigslist find, in ok shape. Shifters needed a full rebuild but now are working well, some rust on the frame I need to deal with.

1994 Diamond Back Apex review

It weighs next to nothing and it likes to go fast. Power transfer feels really fluid. A very fun bike!

1994 Diamond Back Apex Build Specs

Weight: ?lbs, very light due to nice tubing

Frame: 1994 20" custom True Temper TT Lite short butted tubing, Snake Stays, 68mm BB shell, vertical dropouts. Metallic Emerald Green colorway. Serial U BI˙ U4(?)0306805 (still decoding it, but March 1994 #06805. U might mean China Bicycle Company produced? it has a Made in Taiwan sticker.)

Fork: Custom Diamond Back triple butted CrMo, chisel-cut ends and forged droupouts

Cockpit

Handlebars: Bontrager Titec 175g, black, 1", 580mm/22.8", no rise,

Grips: (originally

Stem: Zoom one-piece CrMo, 5°, 135mm, threaded to 1"/25.4mm bar

Headset: Tioga Alchemy OS, black

Saddle: Bontrager C-20

Seatpost: Avenir light alloy, Ti finish 27mm?

Seat Collar: Avenir

Shift/Brake Levers: Shimano Deore LX ST-M560 3x7

Pedals: Forte (formerly Diamond Back alloy body/cage)

Brakes

Brakes: Shimano STX BR-MC30 (F/R)

Pads: Kool Stop (originally Shimano M65)

Drivetrain

Bottom Bracket: Shimano UN-51 68 x 113 cartridge, square taper (ISO?)

Chain: HG70 x7

Crankset: Shimano Deore LX FC-M563, 175mm, 42/32/22t, 107-113mm spindle, 47.5-50mm chainline, 94/58 BCD

Cassette: Shimano FH-HG70? 7-speed 11-28t

Front Derailleur: Shimano Deore LX FD-M563 3x

Rear Derailleur: Shimano Deore LX RD-M563 x7

Wheelset

Hubs: Shimano STX HB-MC30 (F), FH-M530 (R) (originally FH-MC30 rear)

Rims: Bontrager BCX-1 32h (F), SunRims Mach IV 32h (R) (originally BCX-2 rear)

Tires: Conti Town and Country 26x1.??" (F/R) (originally Tioga Psycho 26x1.95" front/rear)

1994 Diamond Back Mountain Bike Catalog page featuring the specs for the Apex.

Original catalog specs page

Component weights:

Wheelset: ? (F), ? (R)

Frame Geometry (20")

1994 Diamond Back Mountain Bike Catalog page featuring the geometry for several bikes including the Apex.

Original catalog geometry page

as measured by me

Seat Tube (C-T): 23" (584mm)

Seat Tube (C-C): 20" (508mm)

Top Tube, Actual: 23.5" (597mm)

Top Tube, Effective (C-C): XX" (XXXmm)

Head Tube Angle: 71.5º

Seat Tube Angle: 73.5º

Chainstay Length: 16.7" (424mm)

Headtube Length: 6" (152mm)

Bottom Bracket Drop: 1.375" (35mm)

Bottom Bracket Height: 11.6" (295mm)

Bottom Bracket: 68mm, English threaded

Standover Height: 31.7" (805mm)

Front Center: 25.75" (654mm)

Wheelbase: 42.8" (1087mm)

Stack: 23"(584mm)

Reach: 17" 432Xmm

Fork Rake: 1.8" ~46mm