I am fairly new to 3 rail Toy Trains and wanting to learn how to setup an Automatic Block System as described here - http://www.toytrainrevue.com/ (see diagram 4 & 4a). I am running purely traditional trains on a fairly basic Fastrack layout. I may eventually upgrade to TMCC, but that is not currently in the budget. My question is if anyone here has setup a simular automatic block system and if they where satisfied with how it worked? If you where starting from scratch would you setup this type of block system again, or would you recommend going directly to TMCC when the budget allows?
Also, the article refers to a Relay and Rectifier that I can by at Radio Shack. Not being that technical, how do I know what to ask for when I go to Radio Shack.
CTT March 2008 has a article that says to use Radio Shack relay #RS275-248 its a DC relay, they add a bridge rectifier to convert to AC power that comed from the transformer to DC. Its # is RS 276-1152. Then add a capacitor to eliminate intermitten operation caused by poor contact among the wheels that contact the track to connect the insulated rail with the outside rail with track power. The capacitor stores energy so that the relay will operate steadly. The # is RS272-1152. I got this from ogaugerr.com, 3 rail O gauge, 153 block signal, hobo joe, April 14, Brewman1973
Seems to me there are pros and cons in most everything…
But I’m just going to use regular block control and power the accessories and lights separately. This may give me the most control. However, I will have one insulated outside rail in each block in case I want to power something that way.
Talked to this guy http://www.three-rail.com/ he was very helpful with automatic block control stuff. I would buy from him rather than cobble my own together. Prices seem fair and there are lots of options. IMHO.
Also, have TMCC but I’m still going to hook up as above anyway and add TMCC later.
Another option is to use one of the relays from Scotts Odds 'n Ends (MTR-12T or DPDT-1) http://www.scottsodds-n-ends.com/products.htm … receives favorable reviews from the O Gauge Rail Roading magazine
I have set up several blocks on my layout for signals. It is not hard to do. I don’t have automatic train control, on off power to the center rail, but with the extra contacts on the relay it would be easy to do. I got my parts at Radio Shack and it runs my signals well. The addition of the capacitor as suggested by V8Vega is a good idea, other wise the relay will chatter on-off. Build one circuit to start, I have made my own outside insulated rail sections using O Gauge Tubular track. Once you have built one, then start adding other blocks. I have also made my own scratchbuilt signals with diodes, also from Rad
Very fair and helpful. After buying the DPDT-1, I called two or three times with questions. He was always friendly and helpful. I’m not much of an electrician, but he helped me to get the block working great.