16 C.F.R. § 1512.4 Mechanical requirements.
Title 16 - Commercial Practices
(a) Assembly. Bicycles shall be manufactured such that mechanical skills required of the consumer for assembly shall not exceed those possessed by an adult of normal intelligence and ability. (b) Sharp edges. There shall be no unfinished sheared metal edges or other sharp parts on bicycles that are, or may be, exposed to hands or legs; sheared metal edges that are not rolled shall be finished so as to remove any feathering of edges, or any burrs of spurs caused during the shearing process. (c) Integrity. There shall be no visible fracture of the frame or of any steering, wheel, pedal, crank, or brake system component resulting from testing in accordance with: The handbrake loading and performance test, §1512.18(d); the foot brake force and performance test, §1512.18(e); and the road test, §1512.18(p) (or the sidewalk bicycle proof test, §1512.18(q)). (d) Attachment hardware. All screws, bolts, or nuts used to attach or secure components shall not fracture, loosen, or otherwise fail their intended function during the tests required in this part. All threaded hardware shall be of sufficient quality to allow adjustments and maintenance. Recommended quality thread form is specified in Handbook H28, “Screw Thread Standards for Federal Service,”1 1 Copies may be obtained from: Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. 2 Copies may be obtained from: American National Standards Institute, 1430 Broadway, New York, New York 10018. (e)–(f) [Reserved] (g) Excluded area. There shall be no protrusions located within the area bounded by (1) a line 89 mm (3 (h) [Reserved] (i) Control cable ends. Ends of all control cables shall be provided with protective caps or otherwise treated to prevent unraveling. Protective caps shall be tested in accordance with the protective cap and end-mounted devices test, §1512.18(c), and shall withstand a pull of 8.9 N (2.0 lbf). (j) Control cable abrasion. Control cables shall not abrade over fixed parts and shall enter and exit cable sheaths in a direction in line with the sheath entrance and exit so as to prevent abrading.
Title 16: Commercial Practices
PART 1512—REQUIREMENTS FOR BICYCLES
Subpart A—Regulations
§ 1512.4 Mechanical requirements.