Missing Link School

+ Click to enlarge

The BTS-1 is a precision tool system which provides a piloted means of tapping the threads in the bottom bracket shell of a frame. After tapping, the taps act as guides to keep the included facing cutter perfectly square with the axis of the bottom bracket for cleanup of the faces of the bottom bracket shell. The BTS-1 includes English taps, 1.370" x 24 TPI right hand thread for the adjustable cup, and 1.370" x 24 TPI left hand thread for the fixed cup. Italian thread taps, 36mm x 24 TPI right hand thread (Part #693), for the adjustable and fixed cups are available as accessories.

+ Click to enlarge

Improperly aligned bike frame or fork dropouts can cause bent axles and quick release skewers, as well as tracking and shifting problems. The FFG-2 quickly determines whether rear frame or front fork dropouts are aligned and parallel. If an error is detected, long handles and comfortable molded grips afford plenty of leverage for straightening. These Park Tool gauges adjust to compensate for various hub widths from 100 to 160mm.

+ Click to enlarge

Many bicycles will not shift or track properly because the front and rear wheels are not in line with the frame. If these conditions still exist after wheel and derailleur adjustments, the seat stays, chain stays, and rear drop outs of the frame may be misaligned. For years the accepted method to check the alignment of the rear drop-out was to run a string on either side. This method does work to some extent. However, it is not accurate because the measurement is not taken at the drop-out. With the Park Tool Frame Alignment Gauge the alignment can be checked quickly and accurately at the drop-out. Retractable pointer to fit all sizes and types of bicycles.

+ Click to enlarge

A quality cutting fluid should be used when performing any cutting, tapping, facing, threading, or reaming procedure. CF-2 Park Tool Cutting Fluid is an environmentally friendly, soy-based cutting fluid that makes any frame cutting tool work better and last longer. Park Tool CF-2 can be effectively used on all metals. 8 oz. plastic bottle with a flip-top spout.

+ Click to enlarge

The Threadless Nut Setter is used to install the star-fangled nut found on 1” and 1-1/8” threadless headset systems. Thread the nut onto the TNS, insert into the fork stack, and tap it in with a hammer. Sets the starfangled nut to 15mm and keeps it straight. Long handle helps prevent pinched fingers. (Star nuts not included.)

+ Click to enlarge

To ensure proper bicycle headset performance and longevity, special attention must be given to accurately machine the fork’s crown race seat. The CRC-1 is a bike professional quality machining tool for milling both the outer edge and lower surfaces of the crown race seat. Includes high speed steel cutters and adjustable collets to machine 26.5mm and 27.1mm crown race seats on 1” forks and 30.1mm crown race seats on 1-1/8" forks Unique adjusting system allows a tight fit of the tool on any fork, threaded or unthreaded (even forks with externally butted steerer tubes), ensuring a smooth, accurate cut and proper alignment of the fork in the frame Cutter sized for 1-inch standard is part #845. Cutter for 1-1/8 inch standard is #846. NOTE: For sharpening services of cutting tools see Park Tool Sharpening Services. Always use cutting fluid such as Park Tool CF-2 when machining.