There have been a couple posts recently about wiring up a semaphore. I recently converted my layout to the AC (base post) common rail system Gilbert advocated and included Sam the Semaphore on one of the control blocks. The wiring was a little tricky, but here is what I've discovered: On a common rail system, the variable post rail is the rail that is broken using fiber pins to create separate control blocks. The base post rail remains unbroken throughout the layout and the transformer base posts are wired together after the transformers are put in phase. Yet Sam is constructed for the common base post rail to be broken. No problem. I thought of it as a semaphore control block within a control block. A section or two away from each end of the control block (where I wanted Sam) where the variable post rails broke, I broke the base post rails. I thought it best to avoid having the fiber pins side-by-side on the same track joint or the loco may stall there when the ten! der wheels hit that spot. I connected Sam's lead to the track onto the base post rail within that base post rail break. Then I powered up Sam with a #697 track trip. On a common base post rail system, the wiring in of Sam the Semaphore is one instance where the base post rails are broken. Does anyone disagree with this procedure?
Tim Brown [Non-text portions of this message have been removed] S-Trains list sponsor: http://www.americanflyertrains.com All the Flyer you desire...books and accessories too! To UNSUBSCRIBE from this list send a note to [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
