GB2456003A - Motorcycle with articulated front wheel assembly - Google Patents
Motorcycle with articulated front wheel assembly Download PDFInfo
- 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- Withdrawn
Links
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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)
- 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.
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)
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 |
-
2007
- 2007-12-31 GB GB0725335A patent/GB2456003A/en not_active Withdrawn
Patent Citations (4)
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) |