Using the Fastrack barrel jack as a lock on

If I understand the question:

The plug on the power supplies are molded into the PS wall wart.  Lionel does make a 10” track section terminal strip, that has the connectors for a transformer.  Or, you can buy your own barrel connector and roll your own, but the Lionel size is different than what I would call “standard”.  The center contact is larger diameter(5.5mmx2.5mm).  FWIW, I just wire to the bottom of the fastrak sections using the .110 connectors, and don’t use the barrel connectors.

fastrack-terminal-section-6-12016

TEDW is correct about the size: 2.5mm x 5.5mm male connectors. On eBay these come with screw terminals or with solder lugs inside a sleeve.

TedW posted:

If I understand the question:

The plug on the power supplies are molded into the PS wall wart.  Lionel does make a 10” track section terminal strip, that has the connectors for a transformer.  Or, you can buy your own barrel connector and roll your own, but the Lionel size is different than what I would call “standard”.  The center contact is larger diameter(5.5mmx2.5mm).  FWIW, I just wire to the bottom of the fastrak sections using the .110 connectors, and don’t use the barrel connectors.

fastrack-terminal-section-6-12016

 

This is the easiest thing. The barrel adapter is just screwed onto a piece of fasttrack and connected with the under track contacts. 

Just take the barrel jack off and solder wire onto the leads that come off the track contacts (or buy the transformer wires that lionel sells). 

If you really have to have the barrel jack, MTH 50-1037 is what you're looking for. 

thanks guys, these may work:

https://www.amazon.com/Karcy-C...Qq08L&ref=plSrch

ChooChoo1972 posted:

thanks guys, these may work:

https://www.amazon.com/Karcy-C...Qq08L&ref=plSrch

 

Wrong size.

You need a 5.5/2.5 jack.

FWIW, I think powering anything but maybe a starter set using one little barrel jack is a bad idea.  I'd want a lot better connection if it were me.

Ooops, that was the wrong link, I actually used these, comes with pigtails already

soldered on:

https://www.amazon.com/gp/aw/d...p_mb_yo_pop_mb_pd_t2