Enjoying your motorized bicycle
Now it is time to find the product. If you live in or close to a big city, you may find a dealer with a showroom. Check with local bicycle and scooter dealers to see of they carry what you are looking for.If you do not find anything locally, do not despair. The Internet is loaded with manufacturers of both kits and pre-built motorized bicycles.If you are not mechanically inclined, seek a second opinion on your chosen bicycle or kit before purchasing. The right engine can make or break your experience with your new motorized bicycle.If you are satisfied with your selection, then it is time to buy and begin enjoying your motorized bicycle supplier .
First, the location of the motor on the rear wheel as disclosed by Henney results in an unbalanced bicycle because the center of gravity is moved to the rear and because the motor is mounted on one side of the wheel, giving the bike a tendency to fall over to one side. Also, Henney's device is uneconomical to retrofit on existing bicycles, due to the fact that the entire rear wheel of an existing bicycle must be removed and discarded and replaced with the wheel, motor, and transmission assembly disclosed in Henney. If the existing bike is a multi-speed type of say 3, 10, or 15 speeds, then all the gearing associated with the rear wheel will have to be removed and discarded and a special rear wheel installed, which allows only two speeds. Today, multi-speed bicycles are predominant, and the advantage of the multi-speed gearing is lost in a design such as Henney.
U.S. Pat. No. 3,280,932 to Moulton discloses a power-assisted bicycle capable of being pedalled only, powered only, or both pedalled and powered. Through the use of separate chain drives and separate free wheel sprockets on the rear wheel, the Moulton design also allows the bicycle to be pedalled in a free-wheeling mode without the added resistance of the motor drive elements. Moulton is disadvantageous, however, because it requires a separate drive chain and drive gear mounted on the rear wheel, thereby increasing the weight and cost of the system and making it harder to retrofit the same onto existing bicycles. Moreover, even in the free-wheeling mode, the bicycle is noticeably harder to pedal because the pedals must drive the extra gear on the rear wheel, the second drive chain, and the drive gear for the second drive chain.
Another object of the invention is to provide a china motorized bicycles having a drive system which can be fitted quickly and easily onto an existing bicycle in such a manner that the bicycle can be pedalled in a free-wheeling mode in which the motorized system does not significantly increase the force needed to pedal the bicycle.
In accordance with a first aspect of the invention, the motorized bicycle includes a wheel having a drive gear mounted thereon, a driven gear connected to the drive gear, and a drive device connected to the driven gear. The drive device includes a motor adapted to rotate an output shaft, a rotatable drive shaft, a first drive device detachably connecting the output shaft to the drive shaft, and a second drive device detachably connecting the drive shaft to the driven gear. The second drive device is activated via torque resulting from rotation of the drive shaft by the first drive device.
source:townhall|motorized bicycles
First, the location of the motor on the rear wheel as disclosed by Henney results in an unbalanced bicycle because the center of gravity is moved to the rear and because the motor is mounted on one side of the wheel, giving the bike a tendency to fall over to one side. Also, Henney's device is uneconomical to retrofit on existing bicycles, due to the fact that the entire rear wheel of an existing bicycle must be removed and discarded and replaced with the wheel, motor, and transmission assembly disclosed in Henney. If the existing bike is a multi-speed type of say 3, 10, or 15 speeds, then all the gearing associated with the rear wheel will have to be removed and discarded and a special rear wheel installed, which allows only two speeds. Today, multi-speed bicycles are predominant, and the advantage of the multi-speed gearing is lost in a design such as Henney.
U.S. Pat. No. 3,280,932 to Moulton discloses a power-assisted bicycle capable of being pedalled only, powered only, or both pedalled and powered. Through the use of separate chain drives and separate free wheel sprockets on the rear wheel, the Moulton design also allows the bicycle to be pedalled in a free-wheeling mode without the added resistance of the motor drive elements. Moulton is disadvantageous, however, because it requires a separate drive chain and drive gear mounted on the rear wheel, thereby increasing the weight and cost of the system and making it harder to retrofit the same onto existing bicycles. Moreover, even in the free-wheeling mode, the bicycle is noticeably harder to pedal because the pedals must drive the extra gear on the rear wheel, the second drive chain, and the drive gear for the second drive chain.
Another object of the invention is to provide a china motorized bicycles having a drive system which can be fitted quickly and easily onto an existing bicycle in such a manner that the bicycle can be pedalled in a free-wheeling mode in which the motorized system does not significantly increase the force needed to pedal the bicycle.
In accordance with a first aspect of the invention, the motorized bicycle includes a wheel having a drive gear mounted thereon, a driven gear connected to the drive gear, and a drive device connected to the driven gear. The drive device includes a motor adapted to rotate an output shaft, a rotatable drive shaft, a first drive device detachably connecting the output shaft to the drive shaft, and a second drive device detachably connecting the drive shaft to the driven gear. The second drive device is activated via torque resulting from rotation of the drive shaft by the first drive device.
source:townhall|motorized bicycles