Parts for 622 continue to appear on the drawing board. It’s easy to get carried away when you’re modelling in CAD. The keys that retain the springs, for example, are really miniscule – about .01 x .01 x .02. Will the 3D printer be able to resolve them? I hope so.
I’m wondering if I should combine the brake cylinder and suspension assembly into a single part. On the one hand, fewer parts are less expensive to print, and the glue joint has a greater chance of lasting. On the other hand, a single large part means I don’t have the opportunity to make minor adjustments to get the cylinder to mate with the rest of the brake system.
Looking back to the brakes, Craig Townsend commented that it looks like the brakes are applied as the piston is pushed out of the brake cylinder. I don’t know if they should be on or off, so I went and changed a couple of numbers on the brakes sketch, and effectively released them.
What do you think? Brakes on or off?