Prototyping Part 2

Alex and I have made good progress with the prototypes. We have sent both ideas to CRI for review. 

This past few weeks we have been ordering parts, making 3D models of our prototypes. So far we still have two different concepts we have been working on separately, but by next week, after we receive feedback from community rowing, we should know which concept we should invest all our time to.

Our first idea is to make a simple stopper that prevents the chain from snapping into the machine. Alex has created a prototype out of wood and magnets.

Prototype of Idea 1 in wood

The idea is that the two pieces will "clamp" the chain and act as a border so the chain doesn't retract and damage the erg.

Sketch of Idea 1

Before making the prototypes out of wood, Alex and I tried to 3D print them but we were having issues with that process. The built plate wasn't heating up properly so the plastic wasn't sticking. We aren't sure whether that's an issue with the printer settings or with the model.

3D models made in TinkerCAD

Our second idea was to create a cord stopper that also  made the process of replacing the handle easier. The stopper would stay on the machine and allow the handles to be interchanged without any tools. One side of the stopper would hold the chain and the other a bolt that can attach to any handle needed.

 

We 3D printed the model and it came out fine, but there were a few issues with the underside of it. We also had to scale it down to make it easier to print. We will be printing a final model this week.

Sketch of Idea 2

 

 Overall we are in good shape and it's just a matter of hearing CRI's feedback to that we can move forward with a final product.