VelopediaBicycle Archive · Specification report

1997 Bilenky EcoSport Tinker Tandem BTC

Velopedia Archive ID 60128

Overview

Model year1997
BrandBilenky
ModelEcoSport Tinker Tandem BTC
Bicycle typeTandem (folding)
Archive ID60128
Original MSRP$3,495.00
ColorsBlack, gloss black, Inferno, Mariner Metallic, Metallic Concord, jade
SizesCaptain 20"/stoker 17", captain 21"/stoker 18", captain 21.5"/stoker 21", c

Frameset

Frame constructionTIG-welded
Frame materialBilenky custom chromoly
ForkBilenky
Fork materialTange Tandem chromoly, butted, unicrown crown
Rear shockN/A

Drivetrain

Component groupShimano Deore XT
ShiftersShimano 600 Ultegra bar-end
Front derailleurShimano Deore XT top-swing, top-pull/clamp-on 28.6 mm
Rear derailleurShimano Deore XT SGS
CranksetRitchey Tandem, 32/42/54 teeth
Bottom bracketShimano BB-UN51, 122.5 mm spindle
BB shell width68mm English
Rear cogs8-speed, 12 - 32 teeth
ChainSachs SC-M55, 1/2 x 3/32"
PedalsNot included

Brakes

BrakesShimano Deore XT M-System brakes, Dia-Compe 287 levers

Cockpit & contact points

Headset1 1/8" American Classic Trilock
HandlebarTTT Forma
Handlebar extensionsN/A
StemSpecialized Mod 3
SaddleTerry men's/Terry women's
SeatpostKalloy Uno/USE suspension, 26.6 mm diameter

Wheels & tires

HubsShimano Deore XT
RimsMavic T 217 SUP, 48-hole
SpokesWheelsmith stainless steel, 2.0mm straight gauge
Spoke nipplesBrass nipples
Front tire700 x 28c Continental Super Sport
Wheel size700c wheels

Geometry · Legacy reference

Top tube571.5 mm
Head-tube angle73.5°
Seat-tube angle73°
Chainstay / rear center447 mm
Wheelbase1747.5 mm
Fork offset / rake57.1 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 8, 2026.