Unused wing treads

I decided not to use these wing treads as I didn't like the aesthetic. The wing shape was too obvious and I wanted a more subtle look. 

Remodelling the rotating arm

I needed to remodel the rotating arm of the roller as the previous model looked too flimsy and not robust enough to handle the conditions in rural sub Saharan Africa. The newer model is more intricate and aesthetically pleasing. It also curves towards the user for easier use.

Tread configurations

This was a potential tread configuration for the roller. The shape was inspired by the shape of wings but I still wanted to keep the shape quite simple. 

I had received some feedback that I could add more curvature to the treads to add a more organic feel. I would address this in the future. 

--------------------------------------------------------------------------------------------------------------------------


This was the result in creating a more organic shaped tread. It now resembles a more of a wing shape
but it still holds that industrial look I am after.
I had received some feedback that the black rubber of the treads gives off some negative environmental connotations. I will address the material of the treads in the future.

Initial ideas and concepts

Before embarking on the insecticide sprayer design I wanted to create a backpack that would be carried on the back of aid workers. These hard-case backpacks would contain a number of compartments that held mosquito nets, malaria test kits and malaria medication. This backpack would also feature an insecticide tank and sprayer.

This is the image that inspired the backpack idea with multiple compartments and many different components.






Why I did not pursue this idea:
The reason being was I felt that the backpack was a product with too many parts. A product within a product within a product. I wanted my final product to be more focused and refined. Having to concentrate on 5 or more products would involve too much research and end up with a diluted final outcome.

Alternative handles

These were alternative handles for the roller. I felt they were too chunky and over designed. I wanted to streamline the handle and handle base so these models were scrapped.

Refining handle material

The material of the main handle arm is to resemble a thick, robust plastic. In the first render the plastic was to bumpy and grainy, like it has been aged. I wanted a more smooth surface. By refining the bump and the diffuse layer I gained the aesthetic I wanted. 

Final material

Alternative models and development

This was a possible roller concept, with an emphasis on very robust treads. This design was influenced by military vehicles.
Although aesthetically this design looks interesting the supporting spokes would be dangerous if someone got their hand caught in it. The deep treads may also collect a lot of dirt.
This design would be scrapped and a more refined roller would be modelled.