On my previous under-construction layout (aren't they all?), I had a a drop section, hinged, and locked in place with a deadbolt. Since I was using common ground wiring, I fastened a ground wire to each part of the deadbolt and ran the ground current through it.
The drop down section was in the middle of a block that extended about one foot on each side (this can be two or three feet on each side, etc.), then soldered the feeder wires to the rails on the drop sown section. Current was then transmitted to the block sections on each end via .032" piano wire sliding in 1/16" brass tubing soldered to the rails on each side of the break in the rails. When the wires were slid out of the tubing in order to lower the bridge, they automatically broke the circuit and killed the approach sections. In addition, by cutting the rails at an angle on each side of the breaks at the lift out section, the piano wire "rail locks" ensured smooth, soundless operation over the rail joints. I may have an old photo/negatives around here somewhere; if so, I'll try to post them. I did an article on it for Model Railroader years ago, which they set aside in favor of a method by the late Gordon Odegard, which was another rendition of the same old same old that wasn't near as efficient or reliable, and required a degree of precision virtually unattainable for most of us who don't do this kind of thing for a living. Bob Nicholson --- In [email protected], "C & P Porter" <[EMAIL PROTECTED]> wrote: > > I've done two lift up sections. The first is hinged and drops down rather that lifts up. Biggest problem is that the rail creeps when it is open so you have to be careful when you close it again. > The 2nd is really a lift out and uses double hung window locks. It was easier to do and seems to fit tighter. On the other hand, I haven't run much on it yet. Last year I visited the model railroad club in Belen, NM and they were using the same idea and were very satisfied with it. > Chuck Porter > ----- Original Message ----- > From: Michael A Scivoletti > To: [email protected] > Sent: Saturday, November 10, 2007 5:40 AM > Subject: {S-Scale List} Grain Silo Loading Facility/ Lift-up bridge > > > > Hiya S Scalers > Has anybody built either: > 1. A Grain Loading Area > 2. A Lift Up section, allowing you to get inside a open oval? > Any responses would be aprreciated. > > I remember seeing a lift up design where 2 things happen: > 1. the section rolls slightly forward to clear the hinger section > 2. the electrical contact is broken when lifted and restored when in-place. > > Thank you > > __________________________________________________________ > Climb to the top of the charts! Play Star Shuffle: the word scramble challenge with star power. > http://club.live.com/star_shuffle.aspx?icid=starshuffle_wlmailtextlink_oct > > [Non-text portions of this message have been removed] > > > > > > > ------------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.15.26/1120 - Release Date: 11/9/2007 9:26 AM > > > [Non-text portions of this message have been removed] > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
