1997 Research Dynamics Coyote One

Archived: 1997 Research Dynamics Coyote One · Mountain bike, non-suspension · Published sizes: 12.5", 15.5", 17.5", 18.5", 19.5"

• Confirm the frame markings and seller description match this archived model. Note every component that differs from the published build.
• Record the frame serial number. It should be legible, unaltered and consistent with the seller’s ownership history.
• Find the size marking on the bicycle and confirm the fit before judging the condition or price.

Archived: Frame: TIG-welded · Fork: Research Dynamics · Hi-tensile steel, unicrown crown

• Check paint damage, vent holes and accessible internal surfaces for corrosion. Look for dents, bent tubes and cracking around welded or brazed joints.
• Stand behind and in front of the bicycle to look for obvious frame, fork or wheel misalignment. Ask directly about crashes, transport damage and repairs.
• Inspect the fork crown, blades, dropouts and visible steerer area. Check that it is straight, securely installed and free of cracks or impact damage.

Archived: Group: Shimano Tourney TY-22 · Shifters: Grip Shift MRX-100 · Front derailleur: Shimano Tourney TY-22 top-swing, bottom-pull/clamp-on 28.6 mm · Rear derailleur: Shimano Tourney TY-22 · Crankset: Prowheel S-355, 28/38/48 teeth · Bottom bracket: Chin Haur CH-47, 122.5 mm spindle · Rear cogs: 6-speed, 14 - 28 teeth · Chain: KMC UG-30, 1/2 x 3/32"

• 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.

Archived: Brakes: Horng Jia 991A brakes, Horng Jia 375AD levers

• Inspect pads and braking surfaces, check the complete cable or hose path, and confirm both controls feel consistent and return cleanly.
• Before riding, test every installed brake separately at walking speed. Each should stop firmly and release cleanly without its control reaching the end of its usable travel.

Archived: Wheel size: 26" wheels · Rims: Kin Lin RT-6n, 36-hole · Hubs: Front: Jou Yu JY-302 Q/R, Rear: Jou Yu JY-211 · Front tire: 26 x 2.10" Kenda K-816

• 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.
• Remove and reinstall or closely inspect both wheel-retention systems. Axles or quick releases should tighten correctly with undamaged threads, hardware and dropouts.

Archived: Headset: 1" Chin Haur CH90-3-SW · Handlebar: Hsin Lung steel · Stem: Jye Chen JC80U · Seatpost: Kalloy SP-200, 25.4 mm diameter · Saddle: Velo VL-218 · Pedals: Wellgo LU-895

• 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.

• Before riding, confirm both wheels are secure, tires are safe, both brakes function, and the headset, handlebar, stem, cranks and pedals have no looseness.
• Begin at low speed. Test steering, braking and shifting progressively, then load the drivetrain and suspension only after the basic safety checks pass.
• Listen and feel for repeated knocks, grinding, skipping, brake pulsation or movement at joints. Stop the test if the bicycle cannot be controlled safely.