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A bar is a frame that supports the load of a bicycle’s weight and connects either an extension of the chainring to the rear sprocket or in some cases, another chainring.
The first type is called an ‘over’ bar as it goes over the top of the crankset. The second type has pivoted arms connected by rotating joints and also known as ‘quick release’ bars.
Upright bars are more used for long-distance commuting and racing while lower bars are typically found on mountain bikes or BMX.
Urban bikes refer to bikes that are made for general work and utility, such as delivery. A space-saver bike is a small, light-weight two-wheeled bicycle designed to fold into a compact package for storage and transport.
The stable bicycle, or folding bike, was invented in the late 1980s with patents in France (No. 2,521,869) and the United States (No. 4,719,376).
A typical space-saver bike has one or more wheels, a seat, and pedals attached to the crankset. The rider’s weight is supported by a suspension system normally located between the seat and the rear wheel.
In some models, the rear wheel is suspended behind the seat via a chain or bar-clamp style arrangement. More recent designs incorporate an electric motor to assist in starting and are powered by rechargeable batteries.
There are a couple of ways to convert a bicycle to an upright bar. The first, and the more popular conversion, is to use an extension bar to “push back” the pedals.
The second technique is more labor-intensive and uses a higher rear wheel. Both conversions are demonstrated in the following sections.
Extension bars are used to lengthen the distance from the pedals to the handlebars. The extension bar is used in combination with a typical bicycle stem, which in turn attaches to the handlebars.
The extension bar has a stem built into it for this purpose, which allows the bicycle’s riders to face forward. This option adds distance between the rider and the rear wheel, making it safer for riders who are taller or new to cycling.
The typical length of an extension bar is in the range of 16 inches to 22 inches (40 to 55 cm). The shorter the extension, the more difficult it is to ride and maintain balance.
Any group that advocates for extending short extension bars may also advocate for a longer extension. Another limitation of short-bar bicycles is that they reduce versatility – all seats are generally uncomfortable for everyone and there are often problems with fitting equipment and panniers on short-bar bikes.
This technique converts the bicycle into an upright bar by raising the position of the back wheel. This increases the distance between the handlebars and rear wheel, which in turn allows more space for a rider to be comfortably placed on his or her seat.
The rear wheel is lifted by using a special hub that either replaces one of the existing wheels or uses an extra axle attached to one of the existing wheels. These hubs can be found in 5-speed, 8-speed, and more recently 10-speed versions.
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There are a number of hubs that can be used to convert a bicycle into an upright bar. The most popular types of such hubs are the rear wheel extension hub and the brake-gear hubs. These hubs have existed for many years with the first patent of coaster brake wheels going back to 1869, which is located in the U.S. Patent Office at Washington, D.C., No. 140,993.
The easiest way to convert a bicycle into an upright bar is by using a rear-wheel extension hub. These hubs are simple to use and convert the bicycle very quickly.
To convert the bicycle, first, remove the regular rear wheel and replace it with an extension hub that has either the same number of sprockets or more sprockets than the regular rear wheel had (i.e., 8-speed to 8-speed).
The result of this conversion is a bicycle with a smaller diameter rear wheel and a larger-diameter front wheel, which are both available in many styles. This type of setup allows for the use of the same handlebars and seat as used on the conversion bicycle’s regular wheel.
A more difficult way to convert a bicycle into an upright bar is by using an extension hub that is built into the main bike rear brake.
The sprocket and chainring are also moved toward the center of the bike where they remain attached to each other by a connecting cog.
The wheel remains in the same position as with a regular bicycle, but the sprocket and chainring are moved on top of the hub. The components of the hubs are arranged in such a way that they can be attached to each other.
One advantage of using this type of hub is that they do not require any modification to the frame. However, it has many disadvantages such as less performance than other conversion methods, increased weight, and a high cost due to the special construction required.
This type of extension hub generally requires a separate chain tensioner and an extra set of shifters. Most rear-wheel extension hubs allow the rider to continue using the regular handlebars.
Two slightly different versions of the brake-gear-hubs have become popular in recent years, which incorporate both front and rear brakes on each side of the bike.
The first model uses a sprocket or cog attached to the back wheel hub that also attaches to another chainring located at the top of a front-wheel fork.
This chainring replaces one of the regular front-wheel sprockets. There are also many versions that incorporate a roller chain attached to both rear and front wheels.
These rear-wheel roller chains can be used with either a derailleur or internally geared hubs. The disadvantage of this type of hub is that it requires the use of two sets of shift levers (one for the front and one for the rear), which makes it inconvenient to change gears.
A similar type of hub is the wheelie-cog that is also used to convert a bicycle into an upright bar. This hub uses a special rear-wheel cog that attaches to both the rear and front wheels via a connecting axle which usually has an extra sprocket.
This arrangement allows for use of the same handlebars and seats as is commonly used on regular bicycles. The disadvantage of this type of hub is that it has more parts, which makes it more complicated to use and repair than other conversion hubs.
The third type of bicycle upright bar is the hipster, which uses two front wheels and one back wheel. The drive to the back wheel is via a chain that links a cog on the front wheel with two sprockets located on each side of the rear wheel.
To make this type of conversion, one must remove the rear wheel, mount it below the frame and fabricate spacers and mounting fixtures.
This type of conversion is relatively easy, but it is not as popular with tall people as it puts more weight onto the hands, arms, and legs. This problem becomes more noticeable the longer the bicycle frame is made.
There are several types of cargo bicycles that have been developed to meet the needs of users who do not want to ride standard upright bicycle frames and prefer a stiffer platform from which to carry heavy loads.
These bicycles have an extended wheelbase and extend well beyond their standard counterparts in length, width, and height.
Although it is not a common type of upright bar conversion, there are several cargo bicycles that have been designed with a rear wheel that is larger in diameter than the front wheels.
This type of bicycle can be used as an upright bar in conjunction with either a mid-wheel or rear wheel coaster brake.
Apart from being comfortable for the rider, the styling, and appearance of cargo bicycles also play an important role in their appeal. There are many different styles of upright bar bicycles, including choppers, penny-farthings, beach bikes, and cruisers.
The most basic form of an upright-bar bicycle is the chopper bicycle. These basic bikes can be made from a variety of materials such as wood and metal.
These types of bicycles usually have very small wheels and are not very suitable for use on rough terrain. Due to their design, choppers have a low rolling radius, and are very difficult to negotiate some types of terrain.
Vintage MTB To Upright Bar/Urban Bike Conversions – Conclusion
When used as an upright bar, a bicycle’s reduced frame dimensions allow it to be much easier to use and pedal than other types of bicycles.
With the increase in the popularity of bicycle touring and camping, the demand for upright bar bicycles has been increasing.
However, there are many different styles of upright-bar bicycles that can be adapted for different uses. The most commercially popular type of upright bar bicycles is those that have been developed to assist people in reaching destinations more quickly than possible on a regular road bike or mountain bike.
Choppers, penny-farthings, and cruisers are three of the more common types of upright bar bicycles. An even newer development is the hipster bicycle that has a rear-wheel that is larger in diameter than the front wheels, which allows it to be used as an upright bar.
As with any type of bicycle, there are many different options and designs for upright-bar bicycles. The choice of which type will meet your needs will depend on personal preferences and possible limitations such as terrain or height.