Thursday, May 15, 2014

Week 7: (Outside-Lab) Braking Line System Adjustments

After meeting in the Machine Shop, our team realized we needed to have more brake line available for the walker's brakes.

The brake handles that were assembled in lab, were attached to a short black braking wire that would be attached to the stoppers placed on top of the wheels. This stopper currently rests on the rubber coated wheels, preventing the walker from moving forward involuntarily. Our team is creating a reverse process of the original braking system, in that the brake will always be engaged unless the lever is pulled. The braking line will be attached to the stopper so that when the handle is gripped on the armrests, the stopper will be released onto the wheel, creating the braking motion. The stopper will be positioned upward, off of the wheel, until the user presses the handle inward.

In this situation, an old bike's brake line was detached to be wrapped around the stopper. As seen in Figure 1, one teammate attempts to disassemble the brake line from the bike. This was done using a wrench and screw driver, untwisting the line from the brakes. This extra wire will be useful for the attachment of the brakes.
Figure 1: This image displays one teammate disassembling the brake line from the old bike.

Until the walker is retrieved from the Machine Shop, our team will be creating the foam padding for the armrests. More updates are soon to follow this progress.

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