Showing posts with label Belt drive folding bicycle. Show all posts
Showing posts with label Belt drive folding bicycle. Show all posts

Thursday, 26 January 2017

Which Belt Drive Bikes are Quicker?



If you are looking for a belt drive bicycle, you need to check out of variety of bikes that you can find at Downtube. The following article will discuss which types of drive systems are quicker.



Toothed belt drive systems are popular with commuters because of them having a quiet operation. They also have an almost maintenance free design, are light in weight and are very smooth because there is no lubricant required.

Is a belt drive bicycle more efficient than a conventional chain drive? A conventional chain drive consumes 2.92 watts on average, while the belt eats up 3.93 watts. Although the difference is just 1 watt, it is not enough for most people to care about but the fact of the matter is it is a substantial 34.6% difference. The efficiency differences of installed systems are obviously good to know for track racers and any rider who wonders about the efficiency of a belt drive bicycle compared to a chain drive bicycle. As long as installed per the manufacturer's instructions, the belt drive is going to be less efficient than the traditional single speed chain drive bicycle. Chain drive bicycles are going to give you almost no friction when there is no preload applied, while a drive belt bicycle is going to still eat up 1.73 watts. 

The slope of the two lines is not equal with respect to increasing applied load. Even more so, this means that the chain drive is going to generate more friction than the belt with increasing applied load. The crossover point is going to fall at about 208 watts in terms of constant pedaling output and the belt drive's advantages are going increase even more from there.

Most of your recreational bicyclists (and even some of your bike enthusiasts) are not going to notice much of a difference between a drive belt bicycle and a chain belt bicycle. On the other hand, top level bikers are going to be interested in reducing frictional losses, especially given their much higher power outputs and the fact that races can be won or lost by just hundredths of a second. Systems with a shallower slope on the applied load is going to be simply too much to overcome. If you do go with a lower roller in order to prevent skipping on the cog, it is then going to be possible that bike racers could benefit from a toothed belt drive system. The unexpected portion of the results is going to become apparent when the efficiency of the belt itself is analyzed in an apples-to-apples tension comparison to the chain, without any preload. These results are going to show you how the belt is going to become more efficient above 208 watts.

The findings between the two drive systems can help to open up the door to new drive train concepts, which can help to take advantage of the belt's inherent high efficiency for power transfer but without any of the efficiency-robbing preload requirements.

Source: Click Here

Thursday, 5 January 2017

Which Belt Drive Bikes are Quicker?



If you are looking for a belt drive bicycle, you need to check out of variety of bikes that you can find at Downtube. The following article will discuss which types of drive systems are quicker.



Toothed belt drive systems are popular with commuters because of them having a quiet operation. They also have an almost maintenance free design, are light in weight and are very smooth because there is no lubricant required.

Is a belt drive bicycle more efficient than a conventional chain drive? A conventional chain drive consumes 2.92 watts on average, while the belt eats up 3.93 watts. Although the difference is just 1 watt, it is not enough for most people to care about but the fact of the matter is it is a substantial 34.6% difference. The efficiency differences of installed systems are obviously good to know for track racers and any rider who wonders about the efficiency of a Belt drive bicycle compared to a chain drive bicycle. As long as installed per the manufacturer's instructions, the belt drive is going to be less efficient than the traditional single speed chain drive bicycle. Chain drive bicycles are going to give you almost no friction when there is no preload applied, while a drive belt bicycle is going to still eat up 1.73 watts. 

The slope of the two lines is not equal with respect to increasing applied load. Even more so, this means that the chain drive is going to generate more friction than the belt with increasing applied load. The crossover point is going to fall at about 208 watts in terms of constant pedaling output and the belt drive's advantages are going increase even more from there.

Most of your recreational bicyclists (and even some of your bike enthusiasts) are not going to notice much of a difference between a drive belt bicycle and a chain belt bicycle. On the other hand, top level bikers are going to be interested in reducing frictional losses, especially given their much higher power outputs and the fact that races can be won or lost by just hundredths of a second. Systems with a shallower slope on the applied load is going to be simply too much to overcome. If you do go with a lower roller in order to prevent skipping on the cog, it is then going to be possible that bike racers could benefit from a toothed belt drive system. The unexpected portion of the results is going to become apparent when the efficiency of the belt itself is analyzed in an apples-to-apples tension comparison to the chain, without any preload. These results are going to show you how the belt is going to become more efficient above 208 watts.

The findings between the two drive systems can help to open up the door to new drive train concepts, which can help to take advantage of the belt's inherent high efficiency for power transfer but without any of the efficiency-robbing preload requirements.

Source: Click Here

Wednesday, 30 November 2016

Perks of Belt drive bikes



If you are looking for a Belt drive bike, you need to look no further than Downtube. You will be able to find a variety of the bikes to your liking. The following article talks about the perks of the bikes and what you need to know before you purchase one.



Introduction

A Belt drive bike is a chainless bike that uses a toothed synchronous belt in order to transmit power from the pedals to the wheel of the bike. The belts are usually made by the same manufacturing companies that produce timing belts for cars, machinery and other belt drive applications. The application of the belt drives to bicycles is growing, especially in the commuter bike market, because of the low maintenance and lubrication free benefits that these types of bikes offer.

Pros of the Bikes

You are going to find the following perks/benefits out of a Belt drive bike:

·         The drive belts are not going to rust.
·         Lubrication is not required of the drive belt.
·         They are going to stay very clean because of the fact that lubrication is not required of them.
·         There is little to no maintenance required of the belt drives.
·         The bikes offer a smoother operation compared to bikes with chains.
·         The bikes are much quieter than with bikes that have a chain on them.
·         You are going to get a longer life span than bikes with a metal bicycle chain.
·         Some belt systems are going to be lighter than conventional chain driven system.

Cons of the Bikes

The following are things that people do not like as much about the bikes:

·         Derailleurs cannot be used on the bikes.
·         The drive belt is not able to be taken apart as you can do with a chain.
·         A frame must be able to accommodate the belt by having an opening in the rear triangle.
·         Belts come in limited selection of lengths, which have to be accommodated in the design of the frame that you have.
·         A beltdrive bike and the repair/replacement parts are harder to find at bike shops than bicycles with conventional chains.
·         The front and rear pulleys or sprockets need to be well aligned in order to avoid excessive friction and wear.
·         Compared to bikes with a chain, the drive belts are usually going to run at a much higher tensions but the high belt tensions is going to reduce the life expectancy of the bearings in the bottom bracket and rear hub.
·         First-generation pulleys with dual guides had problems with snow becoming compacted and trapped in the pulley. The second and generation models have improvedwith the design.

Conclusion

The possibilities for Belt drive bikes are increasing as manufacturers of internal gear hubs are constantly innovating and introducing new designs of the bikes. When you are ready to start looking at the very popular types of bikes, you need to look into the many different bikes that are offered from Downtube. The bikes may be more expensive than bikes with your traditional chains but they are definitely worth the extra money.