Trains.com

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!

AHM/Riverossi loco question

2337 views
14 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    May 2003
  • From: US
  • 148 posts
Posted by leewal on Thursday, May 5, 2022 6:49 PM

I'll give it a look.  Thanks.

Walt

  • Member since
    January 2004
  • From: Canada, eh?
  • 13,375 posts
Posted by doctorwayne on Thursday, May 5, 2022 10:34 AM

There are a couple of options to improve performance, and one would be to replace the motor with a better one.

Another would be to add all-wheel pick-up to both the locomotive...

...and tender...

Wayne

 

  • Member since
    May 2019
  • 58 posts
Posted by NYVTRR on Thursday, May 5, 2022 10:12 AM

The other day the loco started acting up and was running erratic again and needed a nudge occasionally to run.  I did notice that the tender post was a tad loose.  I screwed it in tight and voila it has been perfect since.  leewal maybe that might be something for you to check?

  • Member since
    May 2003
  • From: US
  • 148 posts
Posted by leewal on Wednesday, May 4, 2022 12:42 PM

As an additional question regarding this topic. I, also, have several Rivarossi steam locos that run fine, once they get started. Every once in a while they need a light "bonk on the head" to get them started. On older, open frame, motors, like Mantua, I was always able to clean the brushes AND the comutater to keep them running smoothly. With the Rivarossi motors, mine are all round, I can clean the ends of the brushes, but I see no way to clean the comutaters.   Any suggestions.

(comutaters - comutators)

  • Member since
    July 2006
  • From: North Dakota
  • 9,592 posts
Posted by BroadwayLion on Monday, May 2, 2022 8:53 PM

What the heck... Just wire the tender wheels directly to the locomotive and fiorget about all of that mechanical stuff.

Im not sure if this is a leopard a crocodial or a tadpole...

 

The Route of the Broadway Lion The Largest Subway Layout in North Dakota.

Here there be cats.                                LIONS with CAMERAS

  • Member since
    November 2012
  • From: Kokomo, Indiana
  • 1,463 posts
Posted by emdmike on Monday, May 2, 2022 2:22 PM

I found that the electrical contact between the tender trucks and the body contacts are sporadic at best.  What I do is solder a feeder jumper wire(very fine flexable black wire such as used on DCC decoders) between the power pickup on the tender truck and a spot on the tenders frame that will conduct to the drawbar pin on the tender, which is where the engine gets its power from the tender at.  This would greatly help these run better.   If you go the DCC route.  A decoder with a Keep Alive will be highly recommended.    Mike

Silly NT's, I have Asperger's Syndrome

  • Member since
    January 2019
  • 2,572 posts
Posted by John-NYBW on Sunday, May 1, 2022 9:10 AM

NYVTRR

loco is running fine now  lets hope it stays that way.  Thanks everyone for your input

 

YesYes

  • Member since
    May 2019
  • 58 posts
Posted by NYVTRR on Saturday, April 30, 2022 9:11 PM

loco is running fine now  lets hope it stays that way.  Thanks everyone for your input

  • Member since
    May 2014
  • From: Pennsylvania
  • 1,154 posts
Posted by Trainman440 on Saturday, April 30, 2022 7:59 PM

Rivarossi engines are kinda just fundamentally poor runners. their pickup design makes for poor connections. Pancake 3 pole motors draw lots of current and are weak. metal/brass gears are noisy. stamped metal frame and no bearings adds more noise. This isnt to say theyre not good quality. These mechanisms are bullet proof and last forever. BUT they need work. 

1. Make sure the wheels, contacts which touch the wheels are clean, along with the part of the wheel which the contacts touch.
2. Make sure the tender to loco connection is clean.
3. Make sure the motor commutator is clean. 

Good luck!

---------------------------------------------------------------------------------------------------------------

Modeling the PRR & NYC in HO

Youtube Channel: www.youtube.com/@trainman440

Instagram (where I share projects!): https://www.instagram.com/trainman440

  • Member since
    September 2002
  • 7,486 posts
Posted by ndbprr on Saturday, April 30, 2022 4:18 PM

Also check the connection between the engine and tender.  There juis a wire on the locomotive that makes contact with the post on the tender. Bend it toward the center if the hole in the engine draw bar

  • Member since
    February 2015
  • 869 posts
Posted by NHTX on Saturday, April 30, 2022 3:38 PM

     I don't own any Rivarossi locomotives but, what is the condition of the motor brushes and commutator?  If all the wheels and drawbar connections are okay, those are items I would also check. 

  • Member since
    May 2019
  • 58 posts
Posted by NYVTRR on Saturday, April 30, 2022 3:37 PM

I did clean the tender wheels but never thought about the drawbar and tender post.  Will try that next, thanks

  • Member since
    January 2019
  • 2,572 posts
Posted by John-NYBW on Saturday, April 30, 2022 3:07 PM

Clean wheels on both loco and tender was my first though. The electrical connection between loco and tender is another possible source of problems. The post on the tender presses against a thin wire on the drawbar. You might try a little contact cleaner on those as well. 

Since switching to DCC, none of my Rivarossi steamers are in use but on my old DC layout, they were all excellent runners. 

  • Member since
    March 2005
  • 1,512 posts
Posted by philo426 on Saturday, April 30, 2022 2:17 PM

Check to make sure that the tender wheels are clean.

  • Member since
    May 2019
  • 58 posts
AHM/Riverossi loco question
Posted by NYVTRR on Saturday, April 30, 2022 1:55 PM

The other day I purchased a AHM 4-6-2 pacific steamer.  I realize that they can be terrible runners but I wanted something to tinker with as a challenge. I cleaned it up, cleaned the wheels and put fresh lube on everything that needed to be lubed.  It runs fine most of the time but sometimes when starting up it needs a nudge and at other times it will run erratically. What else do I need to do to get it running better or is this the way with these locos.

thanks 

Bruce

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!

Users Online

There are no community member online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!