Description:TECHNICAL FIELD
[001] The present subject matter relates to a vehicle, more particularly, a saddle type vehicle.
BACKGROUND
5 [002] Transportation in modern world have been revolutionized through introduction of automobiles which are smartly equipped to handle user needs. However, these latest designs of automobiles, face challenges pertaining to customization of vehicle components with respect to different vehicle models. Hence, a customizable vehicle is required to reduce part count and increase
10 maneuverability of the vehicle.
[03] In conventional vehicles, different vehicles have different rider handling characteristics in terms of stability of the vehicle and ease of maneuverability of the vehicle. Further, the conventional vehicles strive to provide ease of maneuverability to a rider by introducing lesser steering effort while handling
15 the vehicle through a front steering system of the vehicle.
[04] The steering effort of the vehicle differs as per geometry and engine capacity of the vehicle. Further the steering effort of the vehicle is determined through calibration of three major parameters such as a caster angle of the vehicle, a trail distance, and a wheelbase ratio of the vehicle.
20 [005] The caster angle is the inclination of the steering axis with respect to the vehicle vertical axis, the vehicle vertical axis passing through a midpoint of a front wheel, and the steering axis passing through a midpoint of a head pipe of the vehicle. The wheelbase is the distance between the midpoint of the front wheel and the midpoint of the rear wheel. The trail is the distance between contact point of the front
25 wheel and the steering axis. The trail and the caster angle have a direct relationship with each other.
[06] The caster angle determines the ease of maneuverability of the steering system of the vehicle. On varying the caster angle, the trail of the vehicle also changes. Whenever the vehicle encounters a disturbance, for example, a pothole, a
30 lateral force is generated which in turn rotates the steering axis point of the vehicle, and the lateral force tends to rotate the front wheel of the vehicle.

[07] Further, an aligning moment of the lateral force from the pothole with respect to a steering axis of the steering shaft of the vehicle is to be higher if there is a higher caster angle, which means that the vehicle tends to slow down quickly after encountering the pothole thereby increasing the overall vehicle stability and
5 maneuverability.
[08] However, in order to achieve a higher caster angle, a high steering torque is required to stop the vehicle from any impact of such disturbances, like the potholes. However, to increase the steering torque, a bulkier steering system is required which in turn increases the overall vehicle weight. Therefore, to achieve a
10 higher caster angle, a trade-off between weight and high-speed function of the vehicle is provided.
[09] In conventional vehicles, the caster angle of the vehicle is changed by changing the orientation of a head pipe of a frame assembly of the vehicle. The head pipe of the vehicle is oriented at different angles along the steering axis to define the
15 caster angle of the vehicle. Further, the increase in caster angle requirement is also restricted to vehicle riding conditions across different terrains. In conventional vehicles, the caster angle and the trail are fixed during assembly of the vehicle and cannot be changed later irrespective of the riding conditions or terrain of the vehicle. This in turn leads to difficulty in vehicle handling characteristics and ease of
20 maneuverability of the vehicle.
[10] In one known art, a front portion of an insert member is bolted through one or more holes to a head pipe of the vehicle. Further, a rear portion of the insert member is bolted through a plurality of holes to a main tube of the vehicle to achieve an adjustable caster angle by bolting the rear portion of the insert member to the
25 plurality of holes of the main tube at different positions. However, this arrangement increases the design complexity of the head pipe assembly of the vehicle.
[11] In another known art, the pair of front forks are mounted to a first block, and a second block is welded into a frame assembly of the vehicle. The first block is bolted to the second block through plurality of holes at different positions to achieve
30 an adjustable mechanical trail which inadvertently changes the caster angle of the vehicle. However, introducing a first block and a second block increases the overall

mass of the front steering system of the vehicle which in turn increases the overall weight and part count of the vehicle.
[12] Hence, it is an object of the present invention to overcome all the above stated and other related problems existing in the known arts, with respect to a head
5 tube assembly of the vehicle and thereby provide a customizable caster angle for the vehicle.
[13] It is further an object of the present invention to provide a head tube assembly of a vehicle with adjustable caster angle.
[14] It is further an object of the present invention to enhance the ease of vehicle
10 maneuverability and handling by a rider on different terrains.
[15] It is further an object of the present invention to enhance the ease of change of trail and wheelbase of the vehicle to provide ease of reachability of a handlebar by a rider.
[16] It is further an object of the present invention to reduce the overall weight,
15 part count and design complexity of the vehicle while providing a caster angle of the vehicle.
SUMMARY
[17] The present subject matter provides a vehicle comprising a frame assembly, a steering system, and a front wheel of the vehicle. The frame assembly
20 comprising a head tube assembly disposed in a front portion of the frame assembly and the head tube assembly being configured to provide an angular movement of the steering assembly for changing the caster angle and the trail of the vehicle. The head tube assembly comprising of a head tube and at least two supporting blocks being disposed in a housing and the housing being configured to be aligned along a
25 longitudinal axis at a predefined radial distance for changing the caster angle and thereby changing the vehicle maneuverability configuration.
[18] As per an aspect of the present invention, a vehicle comprising a frame assembly and a steering assembly. The steering assembly comprising a handlebar sub assembly, a steering assembly and a front wheel. The frame assembly
30 comprising a head tube assembly. The head tube assembly is adapted for enabling

angular movement of the steering assembly. The angular movement is with respect to a first axis passing centrally and longitudinally through the head tube assembly.
[19] As per an embodiment, the angular movement enables a to and fro movement of the head tube assembly along the first axis of the head tube assembly.
5 The head tube assembly is comprising a head tube, at least two supporting blocks and a housing. The head tube is centrally disposed between the at least two supporting blocks, and the head tube and the at least two supporting blocks are protectively covered by the housing.
[20] As per another embodiment, the at least two supporting blocks are affixed
10 to a first end and a second end of the head tube respectively through one or more fasteners. In another embodiment, the at least two supporting blocks are amalgamated with the first end and the second end of the head tube respectively.
[21] As per another embodiment, the housing is integrally attached to a main tube and the main tube is extending rearwardly from the head tube assembly of the
15 frame assembly of the vehicle. The at least two supporting blocks have a first set of holes and a second set of holes.
[22] As per another embodiment, the housing is configured to provide a rectangular shape and the housing has a one or more first cut out and a one or more second cut out for receiving one or more movement enabling members. The one or
20 more movement enabling members is configured to fixedly attach the at least two supporting blocks to a head tube of the head tube assembly through the first set of holes and the second set of holes of the at least two supporting blocks.
[23] As per another embodiment, the one or more first cut out being an arcuate shape and the one or more second cut out being an inverted U-shaped. The one or
25 more first cut out aligns with the first set of holes and the one or more second cut out aligns with the second set of holes.
[24] As per another embodiment, the one or more movement enabling members is configured to coaxially pass through the one or more first cut out and the one or more second cut out of the housing and the first set of holes and the second set of
30 holes of the at least two supporting blocks simultaneously. The one or more movement enabling members are threaded bolts and a threading of the one or more

movement enabling members enables to and fro movement of the head tube for achieving required trail and caster angle of the vehicle.
[25] As per another embodiment, the to and fro movement of the head tube is configured along the first axis of the head tube assembly and the to and fro
5 movement is restricted to a radial distance of 5mm. The head tube assembly being made of metal.
[26] As per another aspect of the present invention, a method for achieving caster angle through a head tube assembly of a vehicle comprising the following steps. Firstly, loosening of one or more movement enabling members by a user.
10 Secondly, rotating a head tube of the head tube assembly to a predetermined radial distance by the user. Finally, fixing a new caster angle by tightening the one or more movement enabling members by the user in the head tube assembly.
[27] As per an embodiment, the predetermined radial distance is restricted to 5 mm of to and fro movement of the head tube along a first axis of the head tube
15 assembly.
[28] As per another embodiment, the one or more movement enabling members is tightened coaxially through a first set of holes and a second set of holes of the at least two supporting blocks of the head tube assembly and through one or more first cut out and one or more second cut out of a housing of the head tube assembly.
20
BRIEF DESCRIPTION OF DRAWINGS
[29] The present invention is described with reference to figures. This invention is implementable in two-wheeled vehicles. The same numbers are used throughout the drawings to reference like features and components. Further, the inventive
25 features of the invention are outlined in the appended claims.
[30] Figure 1a illustrates a left side view of a vehicle, in accordance with an embodiment of the present subject matter.
[31] Figure 1b illustrates a left perspective view of frame assembly of the vehicle, in accordance with an embodiment of the present subject matter.

[32] Figure 2 illustrates a left perspective view of a head tube assembly of the frame assembly of the vehicle, in accordance with an embodiment of the present subject matter.
[33] Figure 3a illustrates a left perspective view of a head tube integrated with
5 at least two supporting blocks, in accordance with an embodiment of the present subject matter.
[34] Figure 3b illustrates an exploded view of the head tube and the at least two supporting blocks, in accordance with an embodiment of the present subject matter.
10 [035] Figure 4a and 4b illustrates a left perspective view and a right perspective view of the head tube assembly being assembled through one or more movement enabling members, in accordance with an embodiment of the present subject matter.
[36] Figure 5 illustrates an exploded view of head tube assembly in an assembled condition, in accordance with an embodiment of the present subject
15 matter.
[37] Figure 6 illustrates a top view of the head tube assembly in an assembled condition, in accordance with an embodiment of the present subject matter.
[38] Figure 7 illustrates a flowchart of a method for changing a caster angle of the vehicle, in accordance with an embodiment of the present subject matter.
20
DETAILED DESCRIPTION
[39] The present subject matter is further described with reference to accompanying figures. It should be noted that the description and figures merely illustrate the principles of the present subject matter. Various arrangements may be
25 devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof.
[40] The foregoing disclosure is not intended to limit the present disclosure to
30 the precise forms or particular fields of use disclosed. As such, it is contemplated that various alternate embodiments and/or modifications to the present disclosure,

whether explicitly described or implied herein, are possible in light of the disclosure. Having thus described embodiments of the present disclosure, a person of ordinary skill in the art will recognize that changes may be made in form and detail without departing from the scope of the present disclosure. Thus, the present disclosure is
5 limited only by the claims.
[41] Additionally, all numerical terms, such as, but not limited to, “first”, “second”, “third”, “primary”, “secondary”, “main” or any other ordinary and/or numerical terms, should also be taken only as identifiers, to assist the reader's understanding of the various elements, embodiments, variations and/or
10 modifications of the present disclosure, and may not create any limitations, particularly as to the order, or preference, of any element, embodiment, variation and/or modification relative to, or over, another element, embodiment, variation and/or modification.
[42] The embodiments of the present invention will now be described in detail
15 with reference to the accompanying drawings.
[43] Figure 1a illustrates a left side view of a vehicle (100), in accordance with an embodiment of the present subject matter. Figure 1b illustrates a left perspective view of a frame assembly (200) of the vehicle (100), in accordance with an embodiment of the present subject matter. For brevity, figures 1a and 1b will be
20 discussed together. A vehicle (100) comprising a frame assembly (200). The vehicle
(100) comprising a headlamp assembly (106) being mounted to a portion of the frame assembly (100). The vehicle (200) further comprising a handlebar assembly
(102) being disposed above the headlamp assembly (106) and the handlebar assembly (102) comprising a side mirror (104), being disposed on a both left and
25 right sides of the handlebar assembly (102) along a longitudinal direction (F-R) of the vehicle (100). The handlebar assembly (102) is configured to be attached to a steering assembly (108) of the vehicle (100). The handlebar assembly (102) is configured to steer and maneuver the vehicle (100) through the steering assembly
(108) of the vehicle (100). The steering assembly (108) is further attached to a
30 portion of a front wheel (110) of the vehicle (100). The front wheel (110) is covered

by a front fender (112) for preventing dirt, dust and mud to be splashed on the vehicle (100).
[44] The frame assembly (200) of the vehicle (100) comprising a head tube assembly (300) being disposed on a front portion of the frame assembly (200) along
5 the longitudinal direction (F-R) of the vehicle (100). The head tube assembly (300) is integrally attached to a main tube (202). The main tube (202) is configured to extend rearwardly from the head tube assembly (300) of the vehicle (100). The main tube (202) in integrated to a down tube (204) through an intermediary tube (206). The main tube (202), the intermediary tube (206) and the downtube (204) are
10 integrated with each other. The main tube (202) and the down tube (204) is configured to mount a fuel tank (116) of the vehicle (100) through one or more fasteners.
[45] Figure 2 illustrates a left perspective view of a head tube assembly (300) of the frame assembly (200) of the vehicle (100), in accordance with an embodiment
15 of the present subject matter. The head tube assembly (300) is configured to be provided with a housing (302) and a head tube (308). The head tube (308) is configured to be protectively housed inside the housing (302). The housing (302) comprising a one or more first cut out (304) and a one or more second set cut out (306). The housing (302) comprising one or more side faces (310). The one or more
20 first cut out (304) and the one or more second cut out (306) is disposed on a top portion and a bottom portion of one of the one or more side faces (310) of the housing (302). In one embodiment, the housing (302) is having a rectangular profile. The head tube (308) comprising a first end (308a) and a second end (308b). The first end (308a) and the second end (308b) of the head tube (308) is disposed outwardly from
25 a one or more ends of the housing (302). In one embodiment, the one or more first cut out (304) being an arcuate shape and the one or more second cut out (306) being configured to have a rectangular profile.
[46] Figure 3a illustrates a left perspective view of a head tube (308) integrated with at least two supporting blocks (400), in accordance with an embodiment of the
30 present subject matter. Figure 3b illustrates an exploded view of the head tube (308) and the at least two supporting blocks (400), in accordance with an embodiment of

the present subject matter. For brevity, figures 3a and 3b will be discussed together. The head tube (308) is attached with at least two supporting blocks (400). The at least two supporting blocks (400) is disposed on the first end (308a) and the second end (308b) of the head tube (308). The at least two supporting blocks (400) is further
5 divided into a first half (400a) and a second half (400b). The first half (400a) and the second half (400b) is configured to hug the head tube (308) and the head tube (308) is disposed concentric to the first half (400a) and the second half (400b) of the at least two supporting blocks (400).
[47] The at least two supporting blocks is configured to have a first set of holes
10 (402) and the first set of holes (402) being disposed on each of the first half (400a) and the second half (400b) of each of the at least two supporting blocks (400). The at least two supporting blocks is also configured to have a second set of holes (404) and the second set of holes (404) being disposed on each of the first half (400a) and the second half (400b) of each of the at least two supporting blocks (400). In one
15 embodiment, the first set of holes (402) is configured to align with the one or more first cut out (304) of the housing (302), and the second set of holes (404) is configured to align with the one or more second cut out (306) of the housing (302).
[48] In another embodiment, the at least two supporting blocks (400) in integrally attached to the head tube (308) using a welding technique. In another
20 embodiment, the at least two supporting blocks (400) being attached to the head tube
(308) using one or more fasteners. The housing (302), the head tube (308) and the at least two supporting blocks (400) being coupled together through one or more movement enabling members (500a, 500b) (as shown in figure 4a).
[49] Figure 4a and 4b illustrates a left perspective view and a right perspective
25 view of the head tube assembly (300) being assembled through one or more movement enabling members (500a, 500b), in accordance with an embodiment of the present subject matter. The one or more movement enabling members (500a, 500b) coaxially configures to couple the headtube assembly (300) together through the one or more first cut out (304) and the one or more second cut out (306) of the
30 housing (302) and the first set of holes (402) and the second set of holes (404). The one or more movement enabling members (500a, 500b) being threaded bolts, and a

threading of the one or more movement enabling members (500a, 500b) enables said to and fro movement of the head tube (308) for achieving required a trail and a caster angle of the steering assembly (108) of the vehicle (100). The one or more movement enabling members (500a, 500b) is configured to coaxially pass through the one or
5 more first cut out (304) and the one or more second cut out (306) of the housing
(302) and the first set of holes (402) and the second set of holes (404). The one or more movement enabling members (500a, 500b) are fastened and tightened mechanically using one or more tools such as a screw.
[50] Figure 5 illustrates an exploded view of head tube assembly (300) in an
10 assembled condition, in accordance with an embodiment of the present subject matter. Figure 6 illustrates a top view of the head tube assembly (300) in an assembled condition, in accordance with an embodiment of the present subject matter. For brevity, figures 5 and 6 will be discussed together. The head tube (308) is configured to have a first end (308a) and a second end (308b). The first end (308a)
15 and the second end (308b) being circular in profile in one embodiment. The first half (400a) and the second half (400b) of the at least two supporting blocks (400) is integrated in proximity to the first end (308a) and the second end (308b) of the head tube (308) in one embodiment. The housing (302) is assembled over the head tube
(308) along with the at least two supporting blocks (400). The one or more
20 movement enabling members (500a, 500b) are attached to the housing (302) through the one or more first cut out (304) and the one or more second cut out (306) of the housing (302). In one embodiment, a threaded portion (600) of the one or more movement enabling members (500a, 500b) is visible from a top view of the head tube assembly (300).
25 [051] Figure 7 illustrates a flowchart of a method for changing a caster angle of the vehicle (100), in accordance with an embodiment of the present subject matter. The caster angle of the vehicle (100) is manually adjustable by first loosening the one or more movement enabling members (500a, 500b) using a screw by a technician as shown in step (701). After loosening, the one or more movement
30 enabling members (500a, 500b), the head tube assembly (300) is rotated to a predetermined radial distance as shown in step (702). In one embodiment, the

predetermined radial distance is 5mm along the first axis (L-L’). The change in caster angle is defined by a predetermined angle (α). The range of the predetermined angle (α) lies within a range of 24 to 30 degrees. The change in caster angle is defined between the first axis (L-L’) and the axis (Y-Y’). In another embodiment, the change
5 in the caster angle of the vehicle (100) also causes change in the trail of the vehicle
(100) by a predetermined value (β). The predetermined value (β) lies within a range of 80-110 mm. Finally, a new caster angle of the vehicle (100) is fixed by manually tightening the one or more movement enabling members (500a, 500b) by the technician in the head tube assembly (300) as shown in step (703).
10 [052] Various embodiments of the invention provide a vehicle comprising a frame assembly, a steering system, and a front wheel of the vehicle. The frame assembly comprising a head tube assembly disposed in a front portion of the frame assembly and the head tube assembly being configured to provide an angular movement of the steering assembly for changing the caster angle and the trail of the
15 vehicle. The head tube assembly comprising of a head tube and at least two supporting blocks being disposed in a housing and the housing being configured to be aligned along a longitudinal axis at a predefined radial distance for changing the caster angle and thereby changing the vehicle maneuverability configuration.
[053] The present invention is a vehicle comprising a frame assembly and a
20 steering assembly. The steering assembly comprising a handlebar sub assembly, a front steering assembly and a front wheel. The frame assembly comprising a head tube assembly. The head tube assembly is adapted for enabling angular movement of the steering assembly. The angular movement is with respect to a first axis passing centrally and longitudinally through the head tube assembly.
25 [054] The present claimed invention solves the technical problem of providing ease of change of caster angle of a vehicle for modifying riding type and riding mode a vehicle from a commuter vehicle to a racing vehicle without use of additional parts.
[55] Specifically, the claimed head tube assembly of the vehicle reduces the part count and provides a design of the head tube assembly which provides ease of
30 serviceability and ease of change in caster angle of a vehicle as per an user’s convenience.

[56] Additionally, the head tube assembly of the vehicle has a design which is easily serviceable and the caster angle can be changed without use of complex tools.
[57] The present invention also provides technical advantages of ease of customization of a vehicle as per user’s convenience to cater to different user needs.
5 [058] In light of the above-mentioned advantages and the technical advancements provided by the disclosed head tube assembly, the claimed steps for changing the caster angle as discussed above are not routine, conventional, or well understood in the art, as the claimed steps enable the following solutions to the existing problems in conventional technologies. Further, the claimed steps clearly
10 bring an improvement in design of a head tube assembly of a vehicle and the steps to change the caster angle of the vehicle is ease and does not require complex tools to change the caster angle of the vehicle as the claimed steps provide a technical solution to a technical problem.
[059] While the present invention has been shown and described with reference
15 to the foregoing preferred embodiments, it will be apparent to those skilled in the art that changes in form, connection, and detail may be made therein without departing from the spirit and scope of the invention.

Reference Numerals:
100 vehicle 304 one or more first cut out
5 102 handle bar assembly 20 306 one or more second cut out
104 side mirror 308 head tube
106 headlamp assembly 308a first end
108 steering assembly 308b second end
110 front wheel 310 one or more side faces
10 112 front fender 25 400 at least two supporting blocks
114 seat 402 first set of holes
116 rear wheel 404 second set of holes
200 frame assembly 400a first half
202 main tube 400b second half
15 204 down tube 30 500a, 500b one or more movement enabling members
206 intermediary tube
600 threaded portion
300

302 head tube assembly

housing
, Claims:I /We Claim:

1. A vehicle (100) comprising:
a frame assembly (200);
a steering assembly, said steering assembly comprising a handlebar
5 sub assembly (102), a front steering assembly (108) and a front wheel (110);
wherein said frame assembly (200) comprising a head tube assembly (300);
wherein said head tube assembly (300) being adapted for enabling angular movement of said steering assembly,
10 wherein said angular movement being with respect to a first axis (L-L’), said first axis (L-L’) passing centrally and longitudinally through said head tube assembly (300).
2. The vehicle (100) as claimed in claim 1, wherein said angular movement being a to and fro movement of said head tube assembly (300) along said
15 first axis (L-L’) of said head tube assembly (300).
3. The vehicle (100) as claimed in claim 1, wherein said head tube assembly
(300) comprising a head tube (308), at least two supporting blocks (400a, 400b) and a housing (302).
4. The vehicle (100) as claimed in claim 3, wherein said head tube (308) being
20 centrally disposed between said at least two supporting blocks (400a, 400b), and said head tube (308) and said at least two supporting blocks (400a, 400b) being protectively covered by said housing (302).
5. The vehicle (100) as claimed in claim 3, wherein said at least two supporting blocks (400a, 400b) being affixed to a first end (308a) and a second end
25 (308b) of said head tube (308) respectively through one or more fasteners.
6. The vehicle (100) as claimed in claim 3, wherein said at least two supporting blocks (400a, 400b) being amalgamated with said first end (308a) and said second end (308b) of said head tube (308) respectively.
7. The vehicle (100) as claimed in claim 3, wherein said housing (302) being
30 integrally attached to a main tube (202), wherein said main tube (202)

extending rearwardly from said head tube assembly (300) of said frame assembly (200) of said vehicle (100).
8. The vehicle (100) as claimed in claim 3, wherein said at least two supporting blocks (400a, 400b) being configured to have a first set of holes (402) and
5 a second set of holes (404).
9. The vehicle (100) as claimed in claim 3, wherein said housing (302) being configured to provide a rectangular shape, and said housing (302) being configured to have one or more first cut out (304) and one or more second cut out (306) for receiving one or more movement enabling members (500a,
10 500b), wherein said one or more movement enabling members (500a, 500b) being configured to fixedly attach said at least two supporting blocks (400a, 400b) to a head tube (308) of said head tube assembly (300) through said first set of holes (402) and said second set of holes (404) of said at least two supporting blocks (400a, 400b).
15 10. The vehicle (100) as claimed in claim 9, wherein said one or more first cut out (304) being arcuate shape and wherein said one or more second cut out
(306) being inverted U-shaped.
11. The vehicle (100) as claimed in claim 9, wherein said one or more first cut out (304) being configured to align with said first set of holes (402).
20 12. The vehicle (100) as claimed in claim 9, wherein said one or more second cut out (306) being configured to align with said second set of holes (404).
13. The vehicle (100) as claimed in claim 9, wherein said one or more movement enabling members (500a, 500b) being configured to coaxially pass through said one or more first cut out (304) and said one or more second
25 cut out (306) of said housing (302) and said first set of holes (402) and said second set of holes (404) of said at least two supporting blocks (400a, 400b) simultaneously.
14. The vehicle (100) as claimed in claim 9, wherein said one or more movement enabling members (500a, 500b) being threaded bolts, and
30 wherein a threading of said one or more movement enabling members

(500a, 500b) enables said to and fro movement of said head tube (308) for achieving required trail and caster angle of said vehicle (100).
15. The vehicle (100) as claimed in claim 1, wherein said head tube (308) being configured to have said to and fro movement along said first axis (L-L’) of
5 said head tube assembly (308), wherein said to and fro movement being restricted to a radial distance of 5mm.
16. The vehicle (100) as claimed in claim 1, wherein said head tube assembly
(308) being made of metal.
17. A method (700) for achieving caster angle through a head tube assembly
10 (300) of a vehicle (100), said method comprising steps of:
loosening (701), of one or more movement enabling members (500a, 500b), by a user;
rotating (702), a head tube (308) of said head tube assembly (300) to a predetermined radial distance, by said user;
15 fixing (703), said caster angle by tightening said one or more movement enabling members (500a, 500b) by said user on said head tube assembly (300).
18. The method (700) for achieving caster angle as claimed in claim 18, wherein said predetermined radial distance of being restricted to 5 mm of to and fro
20 movement of said head tube (308), along a first axis (L-L’) of said head tube assembly (300).
19. The method (700) for achieving caster angle as claimed in claim 18, wherein said one or more movement enabling members (500a, 500b) being tightened coaxially through a first set of holes (402) and a second set of holes (404)
25 of at least two supporting blocks (400a, 400b) of said head tube assembly
(300) and through one or more first cut out (304) and one or more second cut out (306) of a housing (302) of said head tube assembly (300).