Search results
Results from the WOW.Com Content Network
When sizing a fork to a frame, the diameter of the fork steerer or steer tube (1″ or 1⅛″ or 1½″) must not be larger than that of the frame, and the length of the steerer tube should be greater than but approximately equal to the head tube length plus the stack height of the headset. Adapter kits are available to enable use of a 1 ...
The larger diameter of the head tube and headset gives added stiffness to the steering portion of the bicycle. Common sizes. 25.4 mm (1 in) steerer tube, this may have a fork crown (the base of the fork steerer tube) of a number of different dimensions, and milling may be necessary to make some headsets fit. 26.4 mm crown race (ISO standard)
A diagram showing the effect of decreasing the head tube angle, the fork offset, or the wheel size (diameter) on the trail. Animation showing how fork offset must change with changes in steering axis angle to keep trail constant. Animation showing how fork offset must change as trail changes to keep steering axis angle constant.
Reynolds 531 (pronounced 'five-three-one') is a brand name, registered to Reynolds Technology of Birmingham in the United Kingdom, for a manganese–molybdenum, medium-carbon steel tubing that was used in many quality applications, including race car chassis, aircraft components and, most famously, bicycle frame tubing.
On the other hand, a quill stem must be sized to match the inner diameter of the steerer tube. Thus a quill stem made to fit a 28.6 mm (1 + 1 ⁄ 8 in) steerer tube has an outer diameter of 25.4 mm (1 in). For 25.4 mm (1 in) steerer tubes the quill diameter is most often 22.2 mm (7 ⁄ 8 in) but some older American bicycles used 21.15 mm. Some ...
A metric ISO screw thread is designated by the letter M followed by the value of the nominal diameter D (the maximum thread diameter) and the pitch P, both expressed in millimetres and separated by a dash or sometimes the multiplication sign, × (e.g. M8-1.25 or M8×1.25). If the pitch is the normally used "coarse" pitch listed in ISO 261 or ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Sizes that may interchange, depending on the precision needed, include 2 mm (close to 5 ⁄ 64 inch (1.98 mm)), 4 mm (close to 5 ⁄ 32 inch (3.97 mm)) and 8 mm (close to 5 ⁄ 16 inch (7.94 mm)). In reality, a wrench with a width across the flats of exactly 15 mm would fit too tightly to use on a bolt with a width across the flats of 15 mm.