GB2456003A - Motorcycle with articulated front wheel assembly - Google Patents

Motorcycle with articulated front wheel assembly Download PDF

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Publication number
GB2456003A
GB2456003A GB0725335A GB0725335A GB2456003A GB 2456003 A GB2456003 A GB 2456003A GB 0725335 A GB0725335 A GB 0725335A GB 0725335 A GB0725335 A GB 0725335A GB 2456003 A GB2456003 A GB 2456003A
Authority
GB
United Kingdom
Prior art keywords
front wheel
motorcycle
wheel assembly
bogey
bearing
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Withdrawn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
GB0725335A
Other versions
GB0725335D0 (en
Inventor
Glen Merrick Davies
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 GB0725335A priority Critical patent/GB2456003A/en
Publication of GB0725335D0 publication Critical patent/GB0725335D0/en
Publication of GB2456003A publication Critical patent/GB2456003A/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Withdrawn legal-status Critical Current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
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • B62K11/02—Frames
    • B62K11/04—Frames characterised by the engine being between front and rear wheels
    • 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
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • 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
    • 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

Landscapes

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

Abstract

The front wheel assembly 2 is mounted on a bogey which is joined to a main frame of the motorcycle by a bearing 1 which is integral with the frame. An axle passes through the bearing, and is attached to a rear stanchion of the bogey. When the motorcycle leans into a corner, the axle is able to rotate in the bearing 1, and the front wheel assembly 2 stays upright. Thus, the front wheel can be fitted with a wide, flat-profiled tyre. The contact area is much greater, and the grip during cornering and braking will be greater than on a conventional motorcycle, promoting safe and secure handling.

Description

Description -The Bogey-Bike'
A motor cycle with an articulated front wheel assembly.
Motorcycle wheels suffer limitations of tyre adhesion due to the necessity of tilting the motorcycle during cornering. Because the wheel has to tilt, the tyre fitted must have a radiused profile. This limits the area of the tyre which is in contact with the road surface.
If the front wheel of a motorcycle loses grip while under the forces induced by cornering, it will slide away, causing the motorcycle to fall over, with possibly serious consequences. The rider may suffer injury, and the bike may be damaged. The braking efficiency of the tyre is also compromised by the small contact area imposed by the rounded profile.
This invention has the effect of allowing the front wheel to remain upright while the motorcycle corners. The rest of the motorcycle can lean over into the corner. An upright front wheel can be fitted with a flat-profiled tyre as can be found fitted to cars. The contact area will be much greater, and the grip during cornering and braking will be much greater, promoting safe and secure handling of the motorcycle.
The key feature of this invention is that the front wheel assembly, including the suspension, brakes and steering mechanism, is mounted on a bogey which is joined to the frame and the rest of the bike by a bearing. Figure 1 shows the front end of the Bogey-Bike, with reference number 2 being the front wheel. Reference number 1 indicates the position of the bearing, which is integral with the frame. An axle passes through the bearing, and is attached to the rear stanchion of the bogey. When the Bogey-Bike leans into a corner, the axle is able to rotate in the bearing, and the front wheel stays upright.
One drawback of this is that lateral forces may tend to tip the front wheel away from the corner. This is overcome by mounting the bearing, and therefore the pivot point, as low as possible, while maintaining ground clearance when the suspension is deflected. Another is that the gyroscopic action of the front wheel of a conventional motorcycle gives it stability, and that this will be lost if the front wheel does not lean with the rest of the bike.
The gyroscopic action of the rear wheel of the Bogey-Bike is, however, sufficient to maintain stability.
It is envisioned that this will be a feet-forward motorcycle with a relatively low centre of gravity. Its frame will be extended over and round the rider and pillion, in order to provide accident protection and some weather protection, and some rigidity to the frame. Steering will be effected by handlebars mounted on a sub-frame. Reference numbers 3 and 4 show hydraulic linkages between the handlebars and the steering head. Hydraulics will overcome the effects caused by the remote action of the steering and the deflection during cornering.

Claims (1)

  1. C1aim -The Bogey-Bike' A motor cycle with an articulated front wheel assembly, or bogey, which remains upright when the rest of the motorcycle leans when cornering, by means of a bearing mounted at the front of the frame and an axle which can pivot freely within it.
GB0725335A 2007-12-31 2007-12-31 Motorcycle with articulated front wheel assembly Withdrawn GB2456003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0725335A GB2456003A (en) 2007-12-31 2007-12-31 Motorcycle with articulated front wheel assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0725335A GB2456003A (en) 2007-12-31 2007-12-31 Motorcycle with articulated front wheel assembly

Publications (2)

Publication Number Publication Date
GB0725335D0 GB0725335D0 (en) 2008-02-06
GB2456003A true GB2456003A (en) 2009-07-01

Family

ID=39092469

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0725335A Withdrawn GB2456003A (en) 2007-12-31 2007-12-31 Motorcycle with articulated front wheel assembly

Country Status (1)

Country Link
GB (1) GB2456003A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29701408U1 (en) * 1997-01-15 1998-05-14 Constin Design GmbH, 10785 Berlin Two-lane load stem for single-lane vehicles
WO1999041136A1 (en) * 1998-02-13 1999-08-19 Inovo S.N.C. Di Maurizio Ficcadenti & C. A three-wheeled car frame capable of inclining when handling a curve
WO1999050133A1 (en) * 1998-03-31 1999-10-07 Nemeth Janos Motorcycle construction
EP1630081A1 (en) * 2004-08-27 2006-03-01 HONDA MOTOR CO., Ltd. Tiltable three-wheeled vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29701408U1 (en) * 1997-01-15 1998-05-14 Constin Design GmbH, 10785 Berlin Two-lane load stem for single-lane vehicles
WO1999041136A1 (en) * 1998-02-13 1999-08-19 Inovo S.N.C. Di Maurizio Ficcadenti & C. A three-wheeled car frame capable of inclining when handling a curve
WO1999050133A1 (en) * 1998-03-31 1999-10-07 Nemeth Janos Motorcycle construction
EP1630081A1 (en) * 2004-08-27 2006-03-01 HONDA MOTOR CO., Ltd. Tiltable three-wheeled vehicle

Also Published As

Publication number Publication date
GB0725335D0 (en) 2008-02-06

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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)