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Old 16-08-2018, 07:49 AM   #1
ajcooper4
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Default Dropper wires for points

I saw in another post the recommendation to add dropper wires to points. I am currently laying track and wiring and I am using electrofrog points. The usual snip and solder plus a wire from the frog to the micro switch and two wires soldered to the foot of the point which also run to the micro switch.

Other than that I suppose I am relying on the feed into the points for its feed. Are dropper wires direct to the point a good idea and, if so, how many should I add and exactly where please?

Thank you.
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Old 16-08-2018, 09:08 AM   #2
Michael P
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I'm using insulfrog (shock/horror) and I've soldered droppers to the toe (I think that's the phrase - i.e. the single rail on a point). Being a belt and braces/over-engineered sort of bloke I also soldered droppers to every piece of track irrespective of length. So, on an 8 foot length of board I must have about 26 pairs of droppers! So far I've had no problems so long as I clean regularly. The smallest loco I have so far is a Bachmann 0-6-0 and it runs beautifully.
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Old 16-08-2018, 09:11 AM   #3
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P.S. I use wire in tube also - I followed the advice of an exhibitor from S&DMRC who said keep it simple and that way there are fewer frustrations.
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Old 16-08-2018, 09:22 AM   #4
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Read this first. http://www.brian-lambert.co.uk/DCC.html#On_1
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Old 16-08-2018, 09:26 AM   #5
Steve M
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The Peco electrofrog mod:

Red arrow - cut the two silver link wires to completely isolate the frog

Blue arrow - solder a wire between the rails as shown, use a long length of wire to extend it below the baseboard so those bonding wires also Become the droppers

7B8C8F19-F26F-411D-9ABE-CA3F848F7C4B by Steve Mumford, on Flickr

As the frog is totally isolated you will have to use either a manual switch on the point motor or an autofrog module to feed power of the correct p9larity to the frog using the single silver wire under the frog.
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Old 16-08-2018, 09:35 AM   #6
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I've added droppers to my points to ensure the best possible electrical supply. Have a look at reply number 12 in this thread

http://www.modelrailwayforum.co.uk/s...t=13976&page=2
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Old 16-08-2018, 09:37 AM   #7
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Here’s another thought.

The wires I have soldered onto the foot of each point are going to be soldered into the micro switch for changing polarity. As they are fed from the same power supply is there, in principle, anything wrong with putting a terminal block on the board underneath each point and taking one set off to the micro switch and one set off to the BUS wiring?

That way it is only necessary to solder one set of wires to the foot of each point.

This is a preferred option for me as I have already secured the points to the baseboard without the droppers soldered onto the bonding wires as pointed out by Steve M.
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Old 16-08-2018, 09:39 AM   #8
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Quote:
Originally Posted by ajcooper4 View Post
Here’s another thought.

The wires I have soldered onto the foot of each point are going to be soldered into the micro switch for changing polarity. As they are fed from the same power supply is there, in principle, anything wrong with putting a terminal block on the board underneath each point and taking one set off to the micro switch and one set off to the BUS wiring?

That way it is only necessary to solder one set of wires to the foot of each point.

This is a preferred option for me as I have already secured the points to the baseboard without the droppers soldered onto the bonding wires as pointed out by Steve M.
I use Wago's (3 way) to do this.....
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Old 16-08-2018, 11:07 AM   #9
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Quote:
Originally Posted by ajcooper4 View Post
Here’s another thought.

The wires I have soldered onto the foot of each point are going to be soldered into the micro switch for changing polarity. As they are fed from the same power supply is there, in principle, anything wrong with putting a terminal block on the board underneath each point and taking one set off to the micro switch and one set off to the BUS wiring?

That way it is only necessary to solder one set of wires to the foot of each point.

This is a preferred option for me as I have already secured the points to the baseboard without the droppers soldered onto the bonding wires as pointed out by Steve M.
That will work perfectly well.
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Old 16-08-2018, 11:16 AM   #10
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A method I have used is to connect the dropper wire from the bus to the frog switch (PL-13 / PL15 etc) then from there to the rails, bridging across to the switch rails. No need for any connectors.
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