How to wire a lionel 81 rheostat

347 views
6 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    October, 2015
  • 113 posts
How to wire a lionel 81 rheostat
Posted by Toy Trains FTW on Monday, November 27, 2017 2:29 PM

I recently purchased an 81 rheostat and I dont really know how to wire it.  It is complete and I was screwing around and wired it to the ground wire from my transformer and it seemed to work but it got really hot after 10 minutes from under 18v.  Did I do this right or am i supposed to wire it thru the hot wire?  Also Becky if you see this I saw an article about you in a ctt magazine lol

  • Member since
    December, 2001
  • From: Austin, TX
  • 9,598 posts
Posted by lionelsoni on Monday, November 27, 2017 2:52 PM

Connect the transformer common terminal to the outside rails.  Connect the other transformer terminal to one of the rheostat terminals.  Connect the other rheostat terminal to the center rail.

Bob Nelson

  • Member since
    October, 2015
  • 113 posts
Posted by Toy Trains FTW on Monday, November 27, 2017 3:11 PM

alright so i was supposed to use the rheostat on the hot/red wire.  Thanks!

  • Member since
    December, 2001
  • From: Austin, TX
  • 9,598 posts
Posted by lionelsoni on Monday, November 27, 2017 4:19 PM

But keep in mind that it's normal for it to get hot, which is why it's wound on that ceramic rod and covered with the metal cage.

Bob Nelson

  • Member since
    September, 2010
  • From: Parma Heights Ohio
  • 2,026 posts
Posted by Penny Trains on Monday, November 27, 2017 6:48 PM

I use the 95's (but that's really only because I don't have any 81's.  Wink) but they work the same except the 81 has a lever and the 95 has a button.  The 88 is another story because that was designed for use with batteries and doesn't have a cover over the coil.  Anyhoo, if I can't mount them to the layout, I use a small block of wood and extra long wire to act as a "remote throttle".  Smile, Wink & Grin

The standard gauge is wired to a type K 150 watt transformer set at 24 volts by the way.  It's the only way I can get this basket case motor moving!  Laugh

P.S. That's "Mount Saint Garage Sale" over on the right restricting my standard gauge to an "around the legs" layout.

A waking Lithium Flower just about to bloom

  • Member since
    October, 2015
  • 113 posts
Posted by Toy Trains FTW on Tuesday, November 28, 2017 10:22 AM

Ok @lionelsoni I guess thats why they stopped using them lol and @penny Im probably going to mount mine to a piece of wood with a transformer.  I also have a type K and love it alot but im currently using a type T... Woah 24 volts for the im assuming an 8(e)?  My 402 runs at 3/4s of the way on my rheostat with a max setting of 18v lol(love the box cab btw)

  • Member since
    September, 2010
  • From: Parma Heights Ohio
  • 2,026 posts
Posted by Penny Trains on Tuesday, November 28, 2017 7:21 PM

Yeah, but most supermotors didn't have battery acid leaked on them!  Tongue Tied  I did the best I could, but it's far from perfect.  Wink  It also wobbles!  Laugh

A waking Lithium Flower just about to bloom

SUBSCRIBER & MEMBER LOGIN

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

FREE EMAIL NEWSLETTER

Get the Classic Toy Trains newsletter delivered to your inbox twice a month

Search the Community