![how to build a girder front end for a bicycle how to build a girder front end for a bicycle](https://ogden_images.s3.amazonaws.com/www.motorcycleclassics.com/images/2011/05/11100039/fork-sidebar-1.jpg)
Shocks are by Hagon with spring and damping rates to suit the application. If you were to forge a front end out of chrome alloy, or a higher carbon steel (1045+) the uneven application of heat could render the piece weaker in areas that got hotter, or stayed hot longer. When used in higher rake applications the dampening affect may be reduced by side-loading stresses (pinch points) exerted on the tubes. These high quality forks give superb road holding characteristics and are equaly suitable for classic, custom Motorcycles and Trikes. Tube forks provide good dampening qualities for most applications where rake (angle from vertical) does not exceed 35 degrees. Inverted tube forks have been used on sport bikes for years. Both configurations essentially work the same way. Conventional tube forks have the smaller tubes fixed to the triple trees, while inverted tube forks have the larger tubes mounted to the triple trees. Tube forks are available in conventionalĀ (traditional) and invertedĀ configurations. Hydraulic fluid levels must be checked periodically to insure proper operation. Traditionally the rigid portion of the tubes are joined to the frame, via the triple trees, while the wheel axle is fastened to the active (live) forks. Internal springs and hydraulic fluid serve to dampen the movements of the tube forks to smooth out the ride, just as on an automobile, providing the active suspension for the front wheel.
#HOW TO BUILD A GIRDER FRONT END FOR A BICYCLE HOW TO#
The front ends and custom choppers they built were featured in magazines throughout the 70s and 80s like Street Chopper and Custom Bike. How To Compete In Bicycle Races, The Cycling competitions start off when all the cyclists assemble at the starting point. 'Earlier bikes without a front brake really need two people for this check. The sprung girder originated in the 70s with John Harman's idea and Bill Holland's handy work. You need to watch the upper spindle areas and listen for any clicking. Adding a small shock between the top and bottom triple clamps reduces the effects of harmonics and vibration. A four bar (parallel link) mechanism provides the method for mechanical movement. The smaller tube slides in and out of the slightly large tube that is sealed around it. I make front wheel spindles too where required.' Inspecting girder forks in situ 'The best way to check the forks is to fit them to the bike and rock them back and forward whilst applying the brakes. Comprised of a pair of uprights attached to a triple clamp by linkages, the only movement in a girder front end takes place at the fork-trees. Tube forks incorporate an internal shock and spring in one sealed unit.