Abstract:
An adjustable motorcycle-fitting frame for identifying or verifying comfortable or otherwise desirable seat, handle bar, and foot peg positions for use in the design and fabrication of a motorcycle. Once the component parts of the frame are adjusted to a comfortable “fit,” the actual motorcycle frame and additional components can be designed and fabricated around this fit. The adjustable frame enables the designer to sit upon and feel the ride stance of the components during the design stage, rather than guess what would be desirable until after a prototype is made.

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
   (Not Applicable) 
   STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT 
   (Not Applicable) 
   REFERENCE TO AN APPENDIX 
   (Not Applicable) 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates generally to motorcycle design and fabrication, and more particularly to the identification and verification of comfortable “hard point” (i.e. seat, handle bar, and foot peg) positions for use in the design of a motorcycle. 
   2. Description of the Related Art 
   “Hard points” are those parts of a motorcycle that are interfaced by a rider, including the seat, the handles, and the foot pegs. It is desirable to have these hard points positioned on a motorcycle so as to provide a rider with a comfortable riding posture, and a posture that permits excellent control of the vehicle. It is also desirable to identify desirable hard point positions early in the process of designing a motorcycle, so that other components of the motorcycle can be designed around the hard points. In the past, motorcycle designers had to engage in a considerable amount of time-consuming trial and error in order to determine suitable “hard point” positions for a particular motorcycle design. 
   It is an object of the present invention to provide a device that permits a designer to identify or verify desirable hard point positions prior to any fabrication of the motorcycle. 
   BRIEF SUMMARY OF THE INVENTION 
   In accordance with the present invention, there is provided an adjustable frame having two frame stands, a component rail, a seat frame, a handle bar frame, and a foot peg frame. Each of the components is connected in a configuration that provides adjustable hard points. The component rail is defined by an elongated shaft that is oriented substantially parallel to the surface on which the frame stands are seated. The component rail has a plurality of component positioning holes disposed along its length. The component rail also has two legs extending downwardly, each from a point near each of its respective ends, for fitting within and slidably engaging the mounting sleeves of the frame stands. Each frame stand is seated on a flat surface, such as a floor or the ground. 
   The seat frame has a seat cuff, a seat post, and a seat. The seat cuff surrounds and slidably engages the component rail, and the seat post extends upwardly, in an operable orientation, to a seat upon which a rider can rest his or her posterior. The seat post telescopically adjusts. 
   The handle bar frame has a handle bar cuff, a handle bar post, and a handle bar. The handle bar cuff surrounds and slidably engages the component rail. The handle bar post extends upwardly from the handle bar cuff, and the handle bar is mounted on top of the handle bar post. 
   The foot peg frame has a foot peg cuff, a foot peg post, and a foot peg bar. The foot peg cuff surrounds and slidably engages the component rail. The foot peg post extends downwardly from the foot peg cuff, and the foot peg bar is mounted on the bottom of the foot peg post. The foot peg post allows for telescopic height adjustment of the foot peg bar. 
   The height of the seat, the handle bar, and the foot pegs may be adjustably positioned by moving the structures until a positioning hole of their respective shafts is aligned with the positioning hole of their respective sleeves at a desired position and connecting the structures with a locking pin through the aligned holes. The longitudinal position of the seat, the handle bar, and the foot pegs may be adjusted by aligning the positioning holes of their respective cuffs with a component positioning hole at a desired longitudinal position and inserting a locking pin in the aligned holes. 
   In order to identify or verify comfortable hard points positions for a particular motorcycle design, a designer will typically adjust the component rail, seat, handle bar, handles, and foot peg bar to positions that are determined by preliminary design estimates, previous experience, and other factors. The designer then sits on the seat and engages the handles and foot pegs with his or her hands and feet. The designer adjusts the positions of the various components until a suitable riding posture is found. Once these hard points are located, the measurements relative to a particular reference point can be taken. 

   
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
       FIG. 1  is a side view illustrating an embodiment of the present invention. 
       FIG. 2  is a top view illustrating the embodiment of  FIG. 1 . 
       FIG. 3  is an end view illustrating the embodiment of  FIG. 1 . 
       FIG. 4  is an enlarged side view of the seat frame portion of the present invention. 
       FIG. 5  is an enlarged side view of the handle bar frame portion of the present invention. 
       FIG. 6  is an enlarged side view of the foot peg frame portion of the present invention. 
   

   In describing the preferred embodiment of the invention which is illustrated in the drawings, specific terminology will be resorted to for the sake of clarity. However, it is not intended that the invention be limited to the specific term so selected and it is to be understood that each specific term includes all technical equivalents which operate in a similar manner to accomplish a similar purpose. 
   DETAILED DESCRIPTION OF THE INVENTION 
   As shown in  FIG. 1 , the adjustable frame  10  includes two frame stands  12  and  14 , a component frame  16 , a seat frame  18 , a handle bar frame  20 , and a foot peg frame  22 . Unless otherwise noted, all of the components are fabricated from steel members and square tubing members in particular. However, the use of any other suitable material, or combination of materials, is contemplated and will be understood by the person having ordinary skill. 
   Referring to  FIGS. 1 and 2 , the frame stands  12  and  14  are preferably substantially identical, inverted T-shaped bodies. The frame stands  12  and  14  include the bases  24  and  26 , which seat against the surface upon which the adjustable frame  10  rests, and the mounting sleeves  28  and  30 , which extend upwardly in an operable orientation, from the bases  24  and  26 , respectively. The surface upon which the bases seat will typically be the floor of a building, but could include soil, pavement or other surface outdoors. The bases  24  and  26  are laterally oriented members that seat on the surface and remain substantially parallel with one another. The bases  24  and  26  are aligned longitudinally to provide a stable support against lateral movement by the adjustable frame  10 . An example of an acceptable longitudinal distance between the bases  24  and  26  is seven feet. The bases  24  and  26  could, alternatively, be X-shaped, circular, or any other shape that would provide the lateral stability needed to prevent the adjustable frame  10  from swaying or tipping during use. Terms such as “longitudinal” and “lateral” are used herein to describe orientation relative to the length of the component frame  16 . For the sake of convenience and clarity, the relative placement and sizes of these components are defined with respect to the axis of the component frame  16 . 
   Each of the mounting sleeves  28  and  30  is a hollow, elongated body that extends perpendicularly upwardly from the center of its respective base with a rigid connection thereto. The mounting sleeves  28  and  30  have mounting sleeve positioning holes  32  and  34  located near their top edges and at their longitudinal midpoints, each of which provides a transverse, lateral passageway through its respective mounting sleeve. An example of an acceptable diameter for each mounting sleeve positioning hole is 0.5 inches. The term “hole” is often used hereinafter to refer to a pair of axially aligned apertures, wherein one of the apertures is positioned on one sidewall of a hollow body, such as a tube, and the other aperture is positioned on the opposing sidewall. Each “hole” thereby provides a single passageway through the entire body, even though only one of the apertures of the hole is depicted in the illustrations. For example, only one of the apertures in each pair is depicted in  FIGS. 1 ,  4 ,  5  and  6 . The other apertures are on the side of the structure but are impossible to show in an illustration of a three dimensional object. 
   The component frame  16  includes a component rail  36  and two legs  38  and  40 . The component rail  36  is an elongated body that is, in an operable position, oriented substantially parallel to the surface on which the bases  24  and  26  sit and is oriented substantially perpendicular to the laterally oriented bases  24  and  26 . This provides a stable support for the other components, because the width of the bases  24  and  26  provides support against lateral tipping, and the distance between the bases provides support against longitudinal tipping. 
   The component rail  36  has a set of component rail positioning holes  42  horizontally disposed and evenly-spaced along its length. Each component positioning hole provides a transverse, lateral passageway through the horizontal axis of the component rail  36 . An example of an acceptable diameter for each component positioning hole is 0.5 inches, and an example of an acceptable longitudinal distance between each component positioning hole is 1 inch. Of course, the size and spacing of these, and all other holes described herein, are not limited to the sizes given as examples. 
   The legs  38  and  40  extend perpendicularly downwardly (in the orientation of  FIG. 1 ) from rigid connections to the component rail  36 . The leg  38  extends from a point approximately 6 inches from the fore end of the component rail  36  and the leg  40  extends from a point approximately 6 inches from the aft end of the component rail  36 . The legs  38  and  40  fit within and axially engage the mounting sleeves  28  and  30  in the manner of a telescope. The exterior dimensions of the legs  38  and  40  are slightly smaller than the interior dimensions of the mounting sleeves  28  and  30 , in order that the sleeves may snugly receive the legs while allowing sliding axial movement of the legs relative to the sleeves. Of course, the sizes of the components can be reversed so that the mounting sleeves  28  and  30  fit within and axially engage the legs  38  and  40 . 
   Each of the legs  38  and  40  has a plurality of leg positioning holes  44  and  46  vertically disposed and evenly-spaced along its height. Each such hole provides a transverse, lateral passageway through the respective leg that can align with other holes in order that the legs can be mounted to the mounting sleeves  28  and  30 . An example of an acceptable diameter for each leg positioning hole is 0.5 inches, and an example of an acceptable vertical distance between each leg positioning hole is 1 inch. 
   In order to adjust the height of the component rail  36 , the component frame  16  is raised or lowered to cause the legs  38  and  40  to slide telescopically upwardly or downwardly within the mounting sleeves  28  and  30 . When the desired height of the component rail  36  is reached, each of the mounting sleeve positioning holes  32  and  34  is brought into axial alignment with a closest leg positioning hole. Stand pins are then inserted through each pair of aligned holes to secure the legs  38  and  40  against vertical movement, thereby fixing the component frame  16  at the desired height for stably supporting the component frame  16  from tipping. The stand pins, as well as all of the positioning pins described below, are standard spring-loaded positive locking pins with an outer diameter slightly smaller than the diameter of the respective holes through which they pass. However, all other types of fastening means, such as screws, bolts, rivets, clamps, non-spring-loaded pins, and friction mounts are also contemplated. 
   It will be appreciated that the component rail  36  and the frame stands  12  and  14  combine to form a structure that is not only stable against lateral and longitudinal tipping, but is strong enough to support the weight of a human body being transferred to the surface only by the stands  12  and  14 . 
   Referring to  FIGS. 1 ,  2  and  4 , the seat frame  18  is defined by a seat cuff  52 , a seat post  54 , and a seat  56 . The seat cuff  52  is a body with a rectangular opening that receives the component rail  36  therethrough, to permit the seat cuff  52  to surround and slidably engage the component rail  36  as shown in  FIG. 4 . The interior dimensions of the seat cuff  52  are slightly larger than the exterior dimensions of the component rail  36 . Thus, the seat cuff  52  snugly engages the component rail  36  while allowing longitudinal sliding movement of the seat cuff  52  relative to the component rail  36  for adjustment. An example of an acceptable vertical and lateral distance between the exterior surface of the component rail  36  and the interior surface of the seat cuff  52  is 1 millimeter. An example of an acceptable length for the seat cuff  52  is 6 inches. Preferably, the seat cuff  52  is a short piece of square tubing that is slightly larger than the component rail  36 . Additionally, the seat cuff  52  has a seat cuff positioning hole  58  disposed at its vertical and longitudinal midpoint that provides a transverse, lateral passageway through the seat cuff  52 . An example of an acceptable diameter for the seat cuff positioning hole  58  is 0.5 inches. The seat cuff  52  is fixed to the component rail  36  by the seat cuff positioning hole  58 . 
   The seat post  54  has an elongated seat shaft  60  that extends upwardly, in an operable orientation, from rigid connection to the seat cuff  52 . The seat shaft  60  has a plurality of seat shaft positioning holes  64  vertically disposed and evenly-spaced along its height. Each seat shaft positioning hole provides a transverse, lateral passageway through the vertical axis of the seat shaft  60 . An example of an acceptable diameter for each seat shaft positioning hole is 0.5 inches, and an example of an acceptable vertical distance between each seat shaft positioning hole is 1 inch. 
   The seat mounting sleeve  62  is a hollow, elongated member that is vertically oriented in an operable position with an open bottom end. The seat mounting sleeve  62  also has a seat mounting sleeve positioning hole  66  located above its bottom edge that provides a transverse, lateral passageway through the seat mounting sleeve  62 . An example of an acceptable diameter for the seat mounting sleeve positioning hole  66  is 0.5 inches. 
   The seat mounting sleeve  62  fits over and telescopically engages the seat shaft  60 , as the seat shaft  60  extends upwardly into the hollow interior of the seat mounting sleeve  62 . The exterior dimensions of the seat shaft  60  are slightly smaller than the interior dimensions of the seat mounting sleeve  62 , and the sleeve snugly engages the shaft while allowing vertical, telescopic movement of the seat mounting sleeve  62  relative to the seat shaft  60 . An example of an acceptable longitudinal and lateral distance between the exterior surface of the seat shaft  60  and the interior surface of the seat mounting sleeve  62  is 1 millimeter. 
   The seat  56  is fastened to the top end of the seat mounting sleeve  62 , such as by two nut-bolt combinations. All other suitable types of fastening means, such as screws, bolts, clamps, non-spring-loaded pins, and friction mounts are contemplated. The seat  56  is a standard solo motorcycle seat, but all other suitable seat variations are contemplated. 
   In order to adjust the height of the seat  56 , the seat  56  is raised or lowered as the seat mounting sleeve  62  slides vertically with respect to the seat shaft  60 . When the desired height of the seat  56  is reached, the seat mounting sleeve  62  is further adjusted to bring the seat mounting sleeve positioning hole  66  into axial alignment with a nearest seat shaft positioning hole  64 . A seat positioning pin is then inserted through the pair of aligned holes to secure the seat mounting sleeve  62  against vertical movement, thereby fixing the seat  56  at the desired height. It is contemplated that the seat  56  can be positioned relative to the surface upon which the adjustable frame  10  rests a distance from the ground that a normal motorcycle seat is disposed. Furthermore, it is contemplated that the seat  56  can be adjusted relative to the surface a substantial distance in one direction or the opposite direction, in order to permit substantial height variation for various rider sizes. 
   In order to adjust the longitudinal position of the seat  56 , the seat cuff  52  is displaced forward or rearward along the component rail  36 . When the desired longitudinal position of the seat  56  is reached, the seat cuff  52  is further adjusted to bring the seat cuff positioning hole  58  into axial alignment with a nearest component rail positioning hole  42 . A seat cuff positioning pin is then inserted through the pair of aligned holes to secure the seat cuff  52  against longitudinal movement, thereby fixing the seat  56  at the desired longitudinal position. 
   Referring to  FIGS. 1 ,  2 ,  3 , and  5 , the handle bar frame  20  has a handle bar cuff  70 , a handle bar post  72 , and a handle bar  74 . The handle bar cuff  70 , which is similar to the seat cuff  52 , has a rectangular opening that receives the component rail  36  therethrough. The handle bar cuff  70  surrounds and slidably engages the component rail  36  as shown in  FIG. 5 . The interior dimensions of the handle bar cuff  70  are slightly larger than the exterior dimensions of the component rail  36 . Thus, the handle bar cuff  70  snugly engages the component rail  36  while allowing longitudinal sliding of the handle bar cuff  70  relative to the component rail  36  for adjustment. An example of an acceptable vertical and lateral distance between the exterior surface of the component rail  36  and the interior surface of the handle bar cuff  70  is 1 millimeter. An example of an acceptable length for the handle bar cuff  70  is 6 inches. Preferably, the handle bar cuff  70  is a short piece of square tubing. 
   The handle bar cuff  70  has a handle bar cuff positioning hole  76  disposed, preferably, at its vertical and longitudinal midpoint. The handle bar cuff positioning hole  76  provides a transverse, lateral passageway through the handle bar cuff  70  to permit fixing the handle bar cuff  70  in position on the component rail  36 . An example of an acceptable diameter for the handle bar cuff positioning hole  76  is 0.5 inches. 
   The handle bar post  72  has a handle bar shaft  78  that extends upwardly, in an operable orientation, from rigid connection to the handle bar cuff  70 . The handle bar post  72  has a set of handle bar shaft positioning holes  82  vertically disposed and evenly-spaced along its height. Each handle bar shaft positioning hole  82  provides a transverse, lateral passageway through the vertical axis of the handle bar shaft  78  that accommodates adjustment of the handle bar  74  as described below. An example of an acceptable diameter for each handle bar shaft positioning hole is 0.5 inches, and an example of an acceptable vertical distance between each handle bar shaft positioning hole is 1 inch. 
   The handle bar mounting sleeve  80  is defined by a hollow, elongated body that is vertically oriented in an operable position and has a preferably closed, top end and an open bottom end. Additionally, the handle bar mounting sleeve  80  has a handle bar mounting sleeve positioning hole  84  located above its bottom edge that provides a transverse, lateral passageway through the handle bar mounting sleeve  80 . An example of an acceptable diameter for the handle bar mounting sleeve positioning hole  84  is 0.5 inches. 
   The handle bar mounting sleeve  80  fits telescopically over and axially engages the handle bar shaft  78 , as the handle bar shaft  78  extends upwardly within the hollow interior of the handle bar mounting sleeve  80 . The exterior dimensions of the handle bar shaft  78  are slightly smaller than the interior dimensions of the handle bar mounting sleeve  80 , and the handle bar mounting sleeve  80  snugly engages the handle bar shaft  78  while allowing telescopic movement of the handle bar mounting sleeve  80  vertically relative to the handle bar shaft  78 . An example of an acceptable longitudinal and lateral distance between the exterior surface of the handle bar shaft  78  and the interior surface of the handle bar mounting sleeve  80  is 1 millimeter. 
   The handle bar  74  is an elongated shaft that is laterally oriented, in an operable orientation, and affixed substantially at its axial midpoint to the preferably closed, top end of the handle bar mounting sleeve  80 . Substantially one half of the handle bar  74  extends laterally outwardly from the handle bar mounting sleeve  80  in one direction, and substantially the other half of the handle bar  74  extends laterally outwardly from the handle bar mounting sleeve  80  in the opposite direction, thereby simulating conventional motorcycle handlebars. The handle bar  74  is preferably welded to the handle bar mounting sleeve  80 , but all other suitable means for affixing the handle bar  74  to the handle bar mounting sleeve  80  are contemplated, such as screws, bolts, clamps, locking pins, and adhesives. 
   The ends of the handle bar  74  terminate in handles  86  and  88  that are adjustably mounted to the handle bar  74  via ball and socket joints  90  and  92  (see  FIGS. 2 and 3 ). Each handle is an elongated shaft, which is preferably rubberized to simulate a conventional motorcycle handlebar grip, that extends from a respective ball and socket joint. The ball and socket joints  90  and  92  are provided to allow adjustment of the orientation of each handle relative to the handle bar  74  by pivoting about the ball and socket joints  90  and  92 . However, other means of adjustably affixing the handles  86  and  88  to the handle bar  74 , such as hinges, are also contemplated. An example of an acceptable length for each handle is about 5 inches. 
   In order to adjust the height of the handle bar  74 , the handle bar  74  is raised or lowered, as permitted by the handle bar mounting sleeve  80  sliding vertically up or down with respect to the handle bar shaft  78 . When the desired height of the handle bar  74  is reached, the handle bar mounting sleeve  80  is further adjusted to bring the handle bar mounting sleeve positioning hole  84  into axial alignment with a nearest handle bar shaft positioning hole  82 . A handle bar positioning pin is then inserted through the pair of aligned holes to secure the handle bar mounting sleeve  80  against vertical movement, thereby fixing the handle bar  74  at the desired height. 
   In order to adjust the longitudinal position of the handle bar  74 , the handle bar cuff  70  is displaced along the component rail  36 . When the desired longitudinal position of the handle bar  74  is reached, the handle bar cuff  70  is further adjusted to bring the handle bar cuff positioning hole  76  into axial alignment with a nearest component rail positioning hole  42 . A handle bar cuff positioning pin is then inserted through the pair of aligned holes to secure the handle bar cuff  70  against longitudinal movement, thereby fixing the handle bar  74  at the desired longitudinal position. Thus, the handlebar  74 , and grips  86  and  88 , are fixed in a desired position and angle. 
   In an alternative embodiment, each axial half of the handle bar  74  is telescopically adjustable, in order that the overall width of the handle bar  74  may be made narrower or wider, and therefore the relative position of the handles  86  and  88  may be adjusted. This adjustability is achieved with a telescopic sleeve-shaft-pin combination similar to those described above. Other means for providing width adjustment of the handle bar  74 , such as folding or removable axial portions, are also contemplated. 
   In another alternative embodiment, the handle bar shaft  78  is rotatably affixed to the handle bar cuff  70  for allowing the handle bar shaft  78  to swivel about its axis. This also allows the handle bar  74  and handles  86  and  88  to swivel about the axis of the handle bar shaft  78 , thereby providing greater adjustment for a more realistic simulation of engaging a real motorcycle handle bar and handles. Rotatable affixation is achieved with a joint between the shaft and the cuff, however other means of rotatably affixing the handle bar shaft  78  to the handle bar cuff  70  are contemplated. 
   Referring to  FIGS. 1 ,  2 ,  3 , and  6 , the foot peg frame  22  has a foot peg cuff  96 , a foot peg post  98 , and a foot peg bar  100 . The foot peg cuff  96  has a rectangular opening, similar to the seat cuff  52 , that receives the component rail  36  therethrough, and the foot peg cuff  96  surrounds and slidably engages the component rail  36  as shown in  FIG. 6 . The interior dimensions of the foot peg cuff  96  are slightly larger than the exterior dimensions of the component rail  36 . Thus, the foot peg cuff  96  snugly engages the component rail  36  while allowing longitudinal movement of the foot peg cuff  96  relative to the component rail  36  for adjustment. An example of an acceptable vertical and lateral distance between the exterior surface of the component rail  36  and the interior surface of the foot peg cuff  96  is 1 millimeter. An example of an acceptable length for the foot peg cuff  96  is 6 inches. Preferably, the foot peg cuff  96  is a short piece of square tubing. 
   The foot peg cuff  96  has a foot peg cuff positioning hole  102  disposed at its vertical and longitudinal midpoint that provides a transverse, lateral passageway through the foot peg cuff  96 . An example of an acceptable diameter for the foot peg cuff positioning hole  106  ( 102 ) is 0.5 inches. The foot peg cuff positioning hole  102  can align with the component rail positioning holes  42  in the component rail  36  as describe below. 
   The foot peg post  98  has a foot peg shaft  104  that extends downwardly, in an operable orientation, from a rigid connection to the foot peg cuff  96 . The foot peg shaft  104  has a set of foot peg shaft positioning holes  108  vertically disposed and evenly-spaced along its height. Each foot peg shaft positioning hole provides a transverse, lateral passageway through the vertical axis of the foot peg shaft  104 . An example of an acceptable diameter for each foot peg shaft positioning hole is 0.5 inches, and an example of an acceptable vertical distance between each foot peg shaft positioning hole is 1 inch. 
   The foot peg mounting sleeve  106  is a hollow, elongated body that is vertically oriented, in an operable orientation, with an open top end and a foot peg mounting sleeve positioning hole  110  located below its top edge that provides a transverse, lateral passageway through the foot peg mounting sleeve  106  for adjustment as described below. An example of an acceptable diameter for the foot peg mounting sleeve positioning hole  110  is 0.5 inches. 
   The foot peg mounting sleeve  106  fits over and axially engages the foot peg shaft  104  in the manner of a telescope, as the foot peg shaft  104  extends downwardly within the hollow interior of the foot peg mounting sleeve  106 . The exterior dimensions of the foot peg shaft  104  are slightly smaller than the interior dimensions of the foot peg mounting sleeve  106 , and the foot peg mounting sleeve  106  snugly engages the foot peg shaft  104  while allowing vertical, telescopic movement of the sleeve relative to the shaft. An example of an acceptable longitudinal and lateral distance between the exterior surface of the foot peg shaft  104  and the interior surface of the foot peg mounting sleeve  106  is 1 millimeter. 
   The foot peg bar  100  is an elongated shaft that is laterally oriented and affixed substantially at its axial midpoint to the closed, bottom end of the foot peg mounting sleeve  106 . Preferably, substantially one half of the foot peg bar  100  extends laterally outwardly from the foot peg mounting sleeve  106  in one direction, and the other half of the foot peg bar  100  extends laterally outwardly from the foot peg mounting sleeve  106  in the opposite direction. The foot peg bar  100  is preferably welded to the foot peg mounting sleeve  106 , but other suitable means for affixing the foot peg bar  100  to the foot peg mounting sleeve  106  are contemplated. 
   The ends of the foot peg bar  100  terminate in foot pegs  112  and  114 , each of which is an elongated, preferably rubberized, shaft that extends axially from an end of the foot peg bar  100 . The foot pegs  112  and  114  are preferably welded to the foot peg bar  100 , but other suitable means for affixing the foot pegs  112  and  114  to the foot peg bar  100  are contemplated. An example of an acceptable length for each foot peg is about six inches. 
   In order to adjust the height of the foot peg bar  100 , the foot peg bar  100  is raised or lowered, as permitted by the foot peg mounting sleeve  106  sliding vertically up or down with respect to the foot peg shaft  104 . When the desired height of the foot peg bar  100  is reached, the foot peg mounting sleeve  106  is further adjusted to bring the foot peg mounting sleeve positioning hole  110  into axial alignment with a nearest foot peg shaft positioning hole  108 . A foot peg positioning pin is then inserted through the pair of aligned holes to secure the foot peg mounting sleeve  106  against vertical movement, thereby fixing the foot peg bar  100  at the desired height. 
   In order to adjust the longitudinal position of the foot peg bar  100 , the foot peg cuff  96  is displaced along the component rail  36 . When the desired longitudinal position of the foot peg bar  100  is reached, the foot peg cuff  96  is further adjusted to bring the foot peg cuff positioning hole  102  into axial alignment with a nearest component rail positioning hole  42 . A foot peg cuff positioning pin is then inserted through the pair of aligned holes to secure the foot peg cuff  96  against longitudinal movement, thereby fixing the foot peg bar  100  at the desired longitudinal position. 
   In an alternative embodiment, each axial half of the foot peg bar  100  is telescopically adjustable, thereby permitting the overall width of the foot peg bar  100 , and therefore the relative position of the foot pegs  112  and  114 , to be made narrower or wider. This adjustability is achieved with a telescopic sleeve-shaft-pin combination similar to those described above, but other means for providing width adjustment of the foot peg bar  100 , such as folding or removable axial portions, are contemplated. 
   Thus, it is apparent that each of the hard points corresponding to the seat, handlebars and foot pegs can be adjustably mounted on the component rail  36 . The component rail  36  can be adjusted relative to the surface upon which the adjustable frame  10  mounts, and all of the hard points are fixed in relative position for later fabrication of a motorcycle. 
   In order to identify or verify the desired hard point positions for a particular motorcycle design, a designer first adjusts the component rail, the seat, the handle bar, the handles, and the foot peg bar to positions that are dictated by preliminary design, previous experience, or any other facts that are relevant. The designer (or the rider who will eventually ride the motorcycle) then sits on the seat and engages the handles and foot pegs with his or her hands and feet. The designer continues to adjust the positions of the various components until a desirable riding posture is found. The desired positions of the hard points can be based upon various factors and can be tested to ensure the hard points produce optimal results. For example, this testing can include placing the adjustable frame  10  in a wind tunnel with the rider seated, adjusting the hard points and further testing performance based upon hard point locations. The components are locked into place once the desired locations are found. Measurement of the positions of the hard points relative to a reference point (i.e. a point on the ground, on one or both of the bases, fixed in space by a computer connected to a video camera, etc.) may be recorded for further use in the design process. These measurements can then be used to create a frame and other components of the desired motorcycle. Thus, the adjustment of the locations of the hard points relative to one another and/or the surface upon which the adjustable frame  10  rests results in a preferred motorcycle without any trial and error. 
   It should be noted that the frame may be used to tailor the dimensions of a particular design to the dimensions of a specific rider, such as a motorcycle racing rider. In this situation the rider, instead of the designer, mounts the frame and engages in the process of adjustment and measurement described above for use in the design process. 
   This detailed description in connection with the drawings is intended principally as a description of the presently preferred embodiments of the invention, and is not intended to represent the only form in which the present invention may be constructed or utilized. The description sets forth the designs, functions, means, and methods of implementing the invention in connection with the illustrated embodiments. It is to be understood, however, that the same or equivalent functions and features may be accomplished by different embodiments that are also intended to be encompassed within the spirit and scope of the invention and that various modifications may be adopted without departing from the invention or scope of the following claims.