What's the function of a double crossing?

Excuse my ignorance but what are they for? Is better to use that for small space then say multiple turnouts in a small yard?

Are you talking about a double crossover? It’s a custom switch or a set of switches with a crossing to allow forward travel into or out of a siding from either direction. Check out the link below.

http://www.walthers.com/exec/productinfo/552-54

yeah…that’s the one!

Any use of it in a small yard?

Also #4 turn out would be ok for low speed yard right? Even for long wheel base rolling stock and big diesel?

Thanx!

A double crossover is meant for mainline use, generally just beyond yard limits, or the entrance to a (large) station/terminal. This is so that an “inbound” train can get to the right yard/terminal track, and that an “outbound” train can get from the yard/terminal track to the proper mainline track. I think this can also be used just prior to an industry, so that it can be served from both the mains (east/west, or north/south, depending on the mainline configuration.)

However if you were to get a Double Slip-Switch, you could put that in a yard, and it would work out.

A #4 TO would probably be a BAD idea with long freight and newer large wheelbase diesels, even at low speed. #4’s generally are used with < 60’ cars and shorter diesels. This is because the longer cars will overhang a lot, and there is a pretty tight ‘S’ curve if you have 2 #4’s butted together.

oh ok, thanks for that…back tothe drawing board for me…I am trying to do a yard (1.5’ X 3’) as an extension to my main layout which is 3’ X 4’ in N scale…looks like might have to stick to basic simple typical yard design and forget about any fancy stuff…to make matter worse, I am about to mix 3 brands of tracks due to some tracks I need not in stock…oh, forgot I want to include a few industrial buildings too…the space is getting tighter by the minute! LOL But at leat Kato is pretty good, they gave you all the center spacing and the measurements you need which makes planning a lot easier!

Yep, I have a double slip switch in my yard. I have a feed that comes in at an angle and crosses over a yard track that joins the diesel and sanding facility with the diesel shop. The feed comes in at an angle. The double slip allows locomotives to be switched to the track being crossed over or to continue on to the next track. They are pricey but they sure do look good.

A real railroad would use a double crossover any place that a crossing is needed in both directions but there is not enough space to fit two crossovers end to end. Yard, mainline, station throat, doesn’t matter.

Atlas #4 switches can be use for a double crossover…Just watch your speed through the switches.

True, but theywill require 3" track spacing instead of 2".

Also, #6’s will look better and cause less problems.

Also note that a real RR would use two seperate single crossover unless space was a problem. The double crossover requires four more frogs which are a maintenance issue.

Have fun

“What’s the function of a double crossing?”

To get even with a “friend”.[}:)]

(sorry, I couldn’t help myself!)

-George

its handy with double track and yards on both sides of the main.

<> we dont always have that luxery. it’ll be a space taker.

pretty much design track and see how it works and look at flow and figure out the needed switchery to suit.