Large Scale Central

Aristo #6 switches - inservice mods

Finally getting around to the part of my railroad that uses #6 switches. So far have had to modify the #6 switches to enable EPL switch machines to be fitted. The standard ‘throw’ dimension on the switch is approximately 0.080" less than required for an EPL switch machine. This entailed a new throwbar to be made. The EPL switch machine also needs a new mount to be made to enable two mount fitting to the Aristo switch. For some reason a factory decision was made to enable fitting to a wide-radius switch, without modification, as regards throwbar movement and tie spacing to enable an EPL switch machine to be readily fitted without alteration.

The new throwbar was made from an old material known as Micarta (a phenolic resin impregnated canvas material) with the correct rail separation to enable full throw on the EPL switch machine. All the standard electrics were removed from the switch, as they will rust away anyway. Frog polarity is now taken care of with a microswitch pack (LGB #12070) attached to the EPL switch machine. As per my usual outdoors redundancy design, all six contacts on the microswitch pack are utilised to enable changing frog polarity with route selection. This duplication will hopefully extend the operating life of the railroad. My usual build process to date has been to duplicate all power supplies and when relays are utilised, I use twice the amount normally required.

Batteries and R/C.

:smiley:

Steve,
I must be a sado-masochist. Why go to battery control and miss out on all the fun? So far around 500 metres of wire and still a couple of hundred more to go. This is really living. When you throw the switch and everything works then that is train heaven. It is a challenge that has to be conquered.

Did I really say that out loud? Sorry.

Bob’s away, that’s my story and I’m sticking to it. :lol:

By the way Tim, the last #6 I received had the Aristo microswitch mounted better with a more positive throw… still will rot away as well as the wires underneath, but improved.

Regards, Greg

Greg,
after installing my #6 switches, I found that the standard Aristo throwbar is adequate in controlling the polarity of the frog, when used in conjunction with a LGB EPL switch machine (#12010) and microswitch pack (#12070). As per my usual redundancy provision outdoors, I used all six positions on the microswitch pack so that the frog has two redundant power supplies. All that is underneath the switch is the two power supply wires to the frog (and these are sealed with sealant at the screw connection at the frog). Hopefully no ‘rusting’ problems now.

    I did delete the thermistor fuse and hope to be careful in the future to avoid short circuits.  Several times in trials I was remiss in forgetting to reset the switches on the return leg and the loco shorted out the frog polarity.  The LGB electronic controller took care of the short that developed,  but as I will mostly be using a TE setup,  then I need to be more careful.  I am reducing my input power fuses to 5 amps as a safeguard.