More Rear Brake Stuff

OK back to the rear brake. I needed a brake lever to actuate the brake cam on the internal brake. I used a piece of 1/4″ ply to test but it crumbled when actuated.

Next I used a piece of heavy sheet metal. I wanted to cut the square hole and then plot where it would fit on the lever so I would have maximum pressure on it

Here is the sheet metal test piece

Here are my Dad’s drafting tools from College. He went to RPI and was a chemiocal engineer and a great father. I miss him lots. I have felt him and my mother hovering around helping so it is fitting to use his tools to draw the pattern.

Lay out

Test fit

Test fit on the brake drum

Almost finished