Skip to main content

Replies sorted oldest to newest

@GGG posted:

They do have different ohm readings.  PS-1 couplers will not fire or fire reliably with PS-2 or 3.  The Proto 2 coupler has lower resistance and is the same as a PS-3 coupler.  G

Is there a way to test fire a PS 2 ( and I  guess PS 3 being the same )  with a battery  before installing it on my PS 2 /3 volt Railking Triplex . 

I have several proto couplers from PS2 and PS3 and on the Triplex I just need about another almost 1/16 inch  for sufficient side to side clearance from the ladders .

   The Triplex coupler has the flat U shaped piece ( electro magnet trigger ? )  that is wider than the coupler body .   A couple of the spare proto couplers I have do not have these flat U shaped pieces making them sufficiently narrower.

Possible to battery test fire and substitute ? 🤔

It's simple, there are two types of couplers, the PS/1 couplers that have a resistance of around 5-7 ohms, and the PS/2 & PS/3 couplers that have a resistance of between 2-3 ohms.  Also, if you look on the bottom of the couplers, the PS/2 and PS/3 couplers have a flat area with a patent number, the PS/1 couplers have no patent number.

There aren't three types of MTH couplers, only two.  They are not interchangeable.

PS/1 couplers are also compatible with TMCC.

Add Reply

Post
This forum is sponsored by MTH Electric Trains

OGR Publishing, Inc., 1310 Eastside Centre Ct, Ste 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

×
×
×
×
Link copied to your clipboard.
×
×