K'NEX Exercise bike

This K'NEX exercise bike has pedals which drive the rear wheel via a chain, just like a real bike.

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It can be built using:

1. A K'NEX Base kit…

plus…

1. A K'NEX Hub/Pulley Medium.
2. A K'NEX Tyre Large (or a K'NEX Tyre Large Plastic, or a K'NEX Tyre Medium).
3. Two K'NEX Sprocket gear Black.
4. Twenty six K'NEX Chain link Small 20mm.

First, assemble the two 3D connectors shown in the photo opposite.

Please visit Handy Hint A4 if you need help to do this.

Then assemble the base of the bike frame…

…and add eight blue rods as shown.

Build the front axle by adding to a yellow rod:

1. A white connector.
2. A blue spacer.
3. A gear wheel.
4. A tan clip, with the pin pointing towards the gear wheel as shown.

Slide the tan clip so that it engages with the gear wheel, and add:

5. Another blue spacer.
6. Another white connector.

Next, build the front axle by adding to a yellow rod:

1. A snap cap black.
2. A silver spacer.
3. A green connector.
4. A blue spacer.
5. A tan clip with the pin facing away from the green connector…

…and then add:

6. A gear wheel, positioned so that it engages with the pin on the tan clip.
7. Another blue spacer.
8. Another green connector.
9. Another tan clip with the pin facing away from the green connector.

Next, fit both axles into the frame, and on each side of the frame connect the green and white connector together with a yellow rod.

Now attach the 26 chain links to form a chain…

…place the chain around the two gear wheels, and attach the end chain links together to form a loop.

Assemble two pedals…

…and attach to each side of the front axle:

1. A silver spacer.
2. One of the pedals.

Note that one of the pedals should be at the top whilst the other is at the bottom, just like on a real bike.