GB2341154A - Motorcycle front end - Google Patents

Motorcycle front end Download PDF

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Publication number
GB2341154A
GB2341154A GB9819372A GB9819372A GB2341154A GB 2341154 A GB2341154 A GB 2341154A GB 9819372 A GB9819372 A GB 9819372A GB 9819372 A GB9819372 A GB 9819372A GB 2341154 A GB2341154 A GB 2341154A
Authority
GB
United Kingdom
Prior art keywords
headrace
suspension
pivot
handlebars
movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9819372A
Other versions
GB9819372D0 (en
Inventor
Nicholas John Rea
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9819372A priority Critical patent/GB2341154A/en
Publication of GB9819372D0 publication Critical patent/GB9819372D0/en
Publication of GB2341154A publication Critical patent/GB2341154A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/06—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
    • B62K25/08—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for front wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/30—Frame parts shaped to receive other cycle parts or accessories
    • B62K19/32—Steering heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K21/00—Steering devices
    • B62K21/18—Connections between forks and handlebars or handlebar stems
    • B62K21/20—Connections between forks and handlebars or handlebar stems resilient

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

The front end has a double headrace/pivot both sharing the same axis to allow separation of steering and suspension. The lower headrace/pivot, 3, is about which the front forks pivot as in a conventional motorcycle. Instead of the handlebars being connected to the top of the front forks as in a conventional motorcycle the handlebars have a separate pivot point, 2, and are connected via an articulated system to some point below the suspension movement to accommodate shock absorber and vertical wheel movement. This allows direct feedback from the front wheel to the rider without loss through the fork springs and oil.

Description

MOTORCYCLE FRONT END 2341154 This invention relates to the front end of a
motorcycle.
Motorcycle frames and framework are comprised of several components; the frame, the rear swinging arm, and the front forks. The front forks/suspension are connected to the front of the frame and pivot from left to right and have the handlebars connected to the top. The front wheel is then located between the front forks. The front forks and pivoting connection are often known as the front end and it is this definition to describe the front forks/ suspension and connection point to the frame that is used in this document.
Conventional front ends,, however, give the motorcycle rider limited feedback from the front wheel as the handlebars are connected to the top of the forks. The rider's steering input to the front wheel passes through the suspension legs. This suspension absorbs much of the feedback from the front wheel. In fact. many engineers have tried to separate these two functions in the past by the use a front single sided swinging arm or a telelever mechanism.
According to the present invention detailed within there is separation of the steering mechanism and the suspension in order to give the rider increased feedback from the front wheel without feeling being absorbed by the suspension. This is accomplished by a new frame design which has two pivot points (which 1 believe are called headraces) mounted one above another sharing the same axis.
A specific embodiment of the invention will now be described with reference to the accompanying drawing.
Figure 1 shows the distinctive technical feature of the invention being the double headrace/pivot points of the new front end.
Referring to the drawing, 1 shows the shared axis of the twin headrace/pivot points about which both the suspension and steering pivots. 2 shows the upper headrace/ pivot point to which the handlebars are attached and pivot. 3 shows the lower headrace/ pivot point to which the front forks/ suspension are connected. 4 shows the front of the frame to which the double headrace 2 and 3 is attached.
The main headrace 3 is the load bearing pivot and is similar in construction to a conventional motorcycle headrace. This will be similar 2 m strength to a conventional motorcycle and house the headrace bearings. Instead of the handle bars being attached to the top of the front forks as in a conventional motorcycle front end, there is a second headrace 2 for the handlebars. These two headraces/pivots must share the same axis to work as in the hinges of a door. Without the same axis the mechanism will not function. The handlebars are then connected through an articulated system (not illustrated) which allows for suspension movement. to some point below the suspension movement on the front forks or to the front axle itself This allows the rider to feel any front tyre action through this articulated system without any feeling being lost through the suspension and being absorbed by the fork springs or the fork oil: all vibrations are transmitted through the separate articulated system to the handlebars. Instead of the rider's steering action being transferred through the front suspension it is passed directly to the wheel. This movement also turns the front forks/suspension in sympathy and allows the front suspension to continue absorbing any shocks to the front wheel.
3

Claims (4)

1 The present invention comprises of a new front end of a motorcycle which provides for separation of steering control and suspension movement by having a twin headrace system; one for each respective fimction as opposed to a single headrace for both functions. The second headrace/pivot point is provided directly in line with the first and shares the same axis.
2 A new front end as claimed in claim 1 wherein one of the pivot points is for the steering headrace and bearings with the handlebars being connected to and pivoting about.
3 A new front end as claimed in claim 1 wherein one of the pivot points is load bearing and for the front forks/suspension mechanism which is connected to the front wheel.
4 A new front end as claimed in claim 2 wherein the handlebars move about one of the headraces and are connected to some point below the suspension movement or directly to the front axle with an articulated system. This is to turn the front wheel and is articulated and constructed to allow for vertical movement of the suspension but without horizontal play or flexibility. This connection and articulation is essential to allow the main technical feature: the twin headrace to function.
GB9819372A 1998-09-07 1998-09-07 Motorcycle front end Withdrawn GB2341154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9819372A GB2341154A (en) 1998-09-07 1998-09-07 Motorcycle front end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9819372A GB2341154A (en) 1998-09-07 1998-09-07 Motorcycle front end

Publications (2)

Publication Number Publication Date
GB9819372D0 GB9819372D0 (en) 1998-10-28
GB2341154A true GB2341154A (en) 2000-03-08

Family

ID=10838392

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9819372A Withdrawn GB2341154A (en) 1998-09-07 1998-09-07 Motorcycle front end

Country Status (1)

Country Link
GB (1) GB2341154A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009042661A1 (en) * 2009-09-23 2011-03-24 Bayerische Motoren Werke Aktiengesellschaft Front wheel suspension for motor vehicle, particularly single-lane for tricycle, comprises telescopic fork, which is stored at its free end of front wheel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501477A (en) * 1994-08-05 1996-03-26 Moreau; Gregory J. Bicycle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5501477A (en) * 1994-08-05 1996-03-26 Moreau; Gregory J. Bicycle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009042661A1 (en) * 2009-09-23 2011-03-24 Bayerische Motoren Werke Aktiengesellschaft Front wheel suspension for motor vehicle, particularly single-lane for tricycle, comprises telescopic fork, which is stored at its free end of front wheel

Also Published As

Publication number Publication date
GB9819372D0 (en) 1998-10-28

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)