02-14-2010, 01:32 PM
The brake cylinder in that drawing looks very similar to the one for the UC system (available in brass or plastic from CalScale), so you could use that or opt for a "K"-type brake, either the regular or split version, both of which are available from Tichy. Unless you need to be 100% prototypically accurate, it's more important to have "something" under that car than it is to leave it bare for fear of being incorrect.
Wayne
Wayne