Wednesday, November 30, 2016

11/23-11/30

This week Craig and I met to finalize the bill of materials and to create a quick design of what braking system we plan on integrating. We decided to modify a brake caliper to grip the rail and serve as the brakes. Completing the braking design is our top priority over winter break and we plan on finishing up 3-D model of the motor to make sure the components fit together.

I also worked on completing the final presentation slides and worked on the rough draft of the project report.

11/16-11/23

This week I met with Craig in order to assess the build of prototype for components of propulsion (gear and motor). We further discussed the direction of the braking system and decided that placing brakes separated from the motor shaft is our only option as the spacing within the bogie was too small to add any other component. I will continue to look at cheap brake calipers we can alter for braking.

Wednesday, November 16, 2016

This week I began work on organizing materials and parts in order to present them in both the presentation 3 and for our final report. We continue to have difficulty in placement of braking. Size constraints are too limiting and we are working on implementing motor braking.

Wednesday, November 9, 2016

11/02 - 11/09

This week I worked with Craig on finalizing some of the parts required for our build. I haven't had the opportunity to finalize the braking design calculations but Craig and I are still having difficulty in preliminary ideas of location for the band brake and the actuator. I plan on discussing this at length with other sub-teams and our advisers. The idea is to develop a design that would make the band brakes actuated individually with an actuator each (spacing must be considered).

Wednesday, November 2, 2016

Week 9

This week I worked on refining the information for our presentation. I worked with Craig on creating a CAD model for the band brake but we are still trying to decide how to actuate the band brake and the sizes necessary to fit in our model and also properly meet our specifications of slowing down/braking.

Wednesday, October 26, 2016

Week 8

This week I worked on the second presentation and on reworking calculations for the redesign of the braking system. Originally we planned on moving the disc brake along with the disc caliper and finding a way to fit it within our system, but we are now looking at integrating a band brake for the main brake system. The reason we chose to look at the band brake is mostly due to being compact and simple system of brakes. I am currently looking in making sure the correct size of the brakes will function for our bogie and will quickly sketch the CAD models for the assembly.


@. (2014). Band Brakes. Retrieved October 25, 2016, from https://pigeonsblue.com/2014/04/25/band-brakes/

Wednesday, October 19, 2016

Week 7

This week I was tasked to look into fitting in the brakes in to the current bogie design. It's quite difficult to figure out how to add on the disc brakes we previously decided upon. Craig and I are continually reworking designs from what we initially created due to limitations in power, and space provided for the bogie. The space within the bogie is very limited from within as the steering and propulsion will take up most of the space.

We are considering placing the brakes on the shaft driving the chain. Spacing limits to how it is placed and will be further discussed once the design for propulsion can be decided and worked into the CAD models.

An idea I plan on bringing up to the team is implementing wheels with a drum brake attached. I'm approaching this design angle in order to see how much space that design could take up into the bogie system, and if it will be plausible option in case the disc brake design is proven to be too difficult. A big problem I see within the drum brake design is in cost. I will discuss with the team this upcoming week and get feedback on this option of design for the brakes. Our gantt chart will be updated accordingly tomorrow.

Additionally, this week I am beginning to organize our research, design ideas, and calculations in order for our second presentation upcoming on October 26th.