27 / 11 / 2018 | Videos

Making an extending bicycle #3


The third part of the construction 0087 has been completed in a very pleasant way as our construction was completely functional providing us with a great pleasure. At the third video of our construction, we placed a motor of 1000w and 3000rpm on our bike in order to be able to be moved electrically. 

Regarding the power supply of the motor, we used the construction made at the video 0084. Going back to that video, is demonstrated how we made a battery that can move a bicycle without using our feet for about an hour. The motor and our battery are 48v. The speed of the bike is controlled by a throttle that is located on the steering wheel. 

Our electric bike’s speed limit is 43km. The motor was attached to the back wheel with a chain which is not connected to the pedals so if the rider lets the pedals still the motor will move the bike. 

Then, we removed all the pieces of the bike and we painted it in colours of orange, red and white which are the colours that we normally paint our vehicles. We also tested our vehicle at the seafront of our town aiming to expose it to many people and to entertain them with the presence of this unusual bike. 

Finally, when the bike stands tall at its highest level is 1,85 tall and the head of the rider reaches the height of 2,80cm tall, which is a very high point compared to a normal bicycle. We are very satisfied with the great function of all the mechanisms of our bike as well as with the people’s smiles in the presence of this unusual construction!

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09 / 11 / 2018 | Videos

Making an extending bicycle #2



As we used the pieces that we had made in part one of the construction 0087, we carried on with the procedures of making this special bike. In this video, we made a metallic framework by a metallic tube. On the framework, we placed a bearing, where the steering wheel and the pedals move. Then, on the steering wheel, we set two air pistons and in extent on them, we placed the front wheel. Thus, when the air pistons widen, the front part of the bike gets higher. 

We, also placed another two air pistons at the back side of the bike. The difference is that at the back side the pistons were placed between the framework and the scissors, on which the back wheel is placed. The scissors that we made at the back side is long enough so when it opens, the back side of the bike gets high enough in order to reach the same level of the front part. 

One of the challenges while considering making this construction was to keep the same length of the chain while the big move of the scissors is made. This problem, though, was solved as the center of the scissors has the same center of spinning with the gear of the chain. In this way, the chain keeps the same length while the scissors are moving.

At the centre of the bike, we placed the bottles and the air compressor. While on the steering wheel, we placed the valves, which control the opening and the closing of the pistons. Therefore, our bike can get higher and lower. This bike is one of a kind and we created it as this project is considered as an amazing constructive challenge. We are not only happy about the outcome of our construction, but we are also amazed how well it functions generally. To sum up, this construction represents the name of our team ‘make it extreme’ in a great extent.

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