MTL couplers and the "inchworm" (slinky) effect

Mark Truelove Jul 15, 2021

  1. mtntrainman

    mtntrainman TrainBoard Supporter

    10,038
    11,189
    149
    TURNOUTS !!
    :sneaky:
     
    BNSF FAN and DeaconKC like this.
  2. BoxcabE50

    BoxcabE50 HOn30 & N Scales Staff Member TrainBoard Supporter

    67,671
    23,157
    653
    FLIMDIMULATORS! :mad:
     
    BNSF FAN and mtntrainman like this.
  3. John Moore

    John Moore TrainBoard Supporter

    13,422
    12,276
    183
    Switches !!
     
    BNSF FAN and BarstowRick like this.
  4. mtntrainman

    mtntrainman TrainBoard Supporter

    10,038
    11,189
    149
    From behind the woodshed ???
     
    BNSF FAN and DeaconKC like this.
  5. Run8Racing

    Run8Racing TrainBoard Member

    1,018
    609
    29
    COOL !!! Another reason to run cabeese !!! The axle springs also kinda' work as an "E-brake" while you're uncoupled and picking up or dropping off cars.

    Of course, if you run shorter cars, you have more coupler springs to "bounce". A 4' train of ore cars has ALOT more springs than a 4' train of 89' piggy-back cars.

    When I had my 4x8, nobody seemed to notice the "slinky" thing 'til I pointed it out. I DO find it a bit annoying, but learned to just deal with it. If someone made a comment, they were told that Tigger is major shareholder of the RR. They have also been told that my cabeese were equipped with WoO Sprint Car type seats !!!

    BTW... starting construction on a couple Alco C-415 "TURNOUTER" locomotives soon !!! :p:p:p
     
    BNSF FAN and mtntrainman like this.
  6. Metro Red Line

    Metro Red Line TrainBoard Member

    2,497
    712
    47
    I believe Con-Cor was the last manufacturer to ditch rapido couplers as their standard N scale rolling stock coupler...in the year 2016. :ROFLMAO:
     
    BNSF FAN, BarstowRick and BoxcabE50 like this.
  7. John Moore

    John Moore TrainBoard Supporter

    13,422
    12,276
    183
    Still getting rapido couplers on orders from Japan from all manufactures except Kato.
     
    BNSF FAN likes this.
  8. John Moore

    John Moore TrainBoard Supporter

    13,422
    12,276
    183
    Slack is taken upon starting and slack runs in when stopping in the 1 to 1 world. So thus MT couplers are proto.
     
    BNSF FAN, BarstowRick and DeaconKC like this.
  9. DeaconKC

    DeaconKC TrainBoard Member

    1,303
    4,392
    44
    Would adding extra weight to a caboose make a difference, or would it just cause as many problems as it would solve?
     
    BNSF FAN likes this.
  10. BarstowRick

    BarstowRick TrainBoard Supporter

    9,513
    5,679
    147
    The correct weight is always a good thing. However, the idea that adding weight... is a good thing, will cause more problems then it solves.

    Cause and effect. For every action there is an equal and opposite reaction. Wrap your head around that, if you dare.
     
    BNSF FAN and DeaconKC like this.
  11. CSX Robert

    CSX Robert TrainBoard Member

    1,503
    640
    41
    They're not prototypical. Slack action and "slinky" are not the same thing, they are related, but they are not the same. Have you ever seen a car with worn out shocks bouncing up and down as it goes down the road compared to a car with good shocks? That's the difference between "slinky" and slack action. Both cars allow the suspension to compress and rebound, but good shocks help control oscillations. Likewise, prototypical couplers have damping to help control oscillations while Micro-Trains couplers have completely undamped springs.
     
  12. mtntrainman

    mtntrainman TrainBoard Supporter

    10,038
    11,189
    149
    The 'slinky' has always been there and WILL always be there. The only time I notice it is when the train is going right by in front of me. I don't see it when the train is coming towards me. I don't see it once the train passes and is going away from me. Those few seconds I do see it...meh ! I have a lot more pressing things to worry about !! JMO :whistle:
     
    umtrr-author, BNSF FAN, Nil and 6 others like this.
  13. Metro Red Line

    Metro Red Line TrainBoard Member

    2,497
    712
    47
    It will help a little. But why not use a non-MTL knuckle coupler for your cabooses then?
     
    BNSF FAN and DeaconKC like this.
  14. CSX Robert

    CSX Robert TrainBoard Member

    1,503
    640
    41
    It would really depend on you're particular situation. With shorter trains it would probably help, but it will also increase needed pulling power show it might shorten your maximum train length and it could also increase the likelihood of string-lining.

    Non-MTL couplers on the caboose will not prevent slinky throughout the rest of the train.
     
    BNSF FAN and DeaconKC like this.
  15. DeaconKC

    DeaconKC TrainBoard Member

    1,303
    4,392
    44
    My layout is designed for short trains with short cars and having a 2% grade. My small steamers are already limited to short consists due to this.
     
    BNSF FAN likes this.
  16. Bronzemeister

    Bronzemeister TrainBoard Member

    10
    12
    13
    Also, the brand new Bachmann Thomas N scale releases are coming with rapidos...
     
    BNSF FAN and jwaldo like this.
  17. jwaldo

    jwaldo TrainBoard Member

    729
    3,124
    55
    Rapidos are pretty kid-friendly, whereas Bachmann's EZ-Mate coupler isn't friendly to ANYONE, so in that case it's practically an upgrade :LOL:
     
    BNSF FAN likes this.
  18. Mike C

    Mike C TrainBoard Member

    1,837
    479
    42
    I have something you can try . I haven't done this , but I am 95% confident it will work . Open the coupler box and add a second spring . That should stiffen things up enough to take the bounce out without affecting the loco traction . Mike
     
    BNSF FAN, Allen H and DeaconKC like this.
  19. freddy_fo

    freddy_fo TrainBoard Member

    1,106
    4,390
    47

    I have a track maintenance car with a gravity weighted masonite wafer that I pull at the end of the train... no slinky.
     
    Last edited: Apr 22, 2023
    BNSF FAN, Allen H, MK and 1 other person like this.
  20. Metro Red Line

    Metro Red Line TrainBoard Member

    2,497
    712
    47
    Thomas isn't based on a north American RR prototype...
     
    BNSF FAN likes this.

Share This Page