North Pole In the Making... Centre Frame

Using a technical drawing, I made a temporary plate from MDF.
The tent pole indicates where my foot rests in this test phase when I sit on the bike.
The PVC pipe is placed where the engine power is transferred from the primary to the secondary chain.

More MDF parts are being manufactured to test whether we are on the right path.

The drawing for the centre frame of aRctic1 is nearing completion.
Together with the animated image it gives an idea of how it will look.

The laser cut steel plates.
Temporarily held together by cable ties they form the centre frame.

Before welding starts, I first test whether everything is to my satisfaction.

The centre frame was professionally welded together by Paul van de Greef.

The swingarm mounts are welded to it. The swingarm pivots in them and the axle, on which the two – connected – sprockets of the primary and secondary chain rotate, is also placed in there.

aRctic1 with centre frame on a Dutch trade show.

Sandblasted and spray painted.

aRctic1 is standing by itself again.

The result in the current phase. To save weight, my plan is to eventually make the centre frame from aluminium.

Special thanks for developing and making the centre frame to:

* Paul van de Greef Metaalbewerking, Schijndel – welding, milling and further development.
* DvO Engineering – engineering and technical drawing.
* Jos Derks van de Ven en Creative Production BV – supply of steel and laser cutting .
* Scholtz Straaltechniek – sandblasting and spray painting.