Tyco Collector's Forum -
Welcome to the forum.
Username:
Password:
Save Password


Register
Forgot your Password?
  Home   Forums   Events Calendar   Forum Admins & Mods   FAQ   Install Search Provider   Register
Active Topics | Active Polls | Newsletters | Member Map | Members | Online Users |
[ Active Members: 0 | Anonymous Members: 0 | Guests: 41 ]  [ Total: 41 ]  [ Newest Member: Chutem ] Select Skin:
 All Forums
 Other Great HO Trains
 Athearn Motive Power & Rolling Stock.
 refit old Athearn F unit with brass bearings
   All users can post NEW topics in this forum
   All users can reply to topics in this forum
 Printer Friendly
Author Previous Topic: Seeking instructions Cary shell for Athearn Topic Next Topic: Tank car hazmat placards  

offtrackthoroughbred
Little Six

Ice Bandit

Status: offline

 Posted - October 11 2014 :  1:14:39 PM Link directly to this topic  Show Profile  Add offtrackthoroughbred to Buddylist
I acquired an old Athearn F drive
It would run sporadically with no pulling power so I oiled and greased to no avail. Upon disassembly,
I determined poor performance must be caused by bad bearings in the trucks
I decided to make some bearings. I want a good fit without stressing the zamac side frame. First I cut a channel long ways in a piece of 1/8 inch brass tubing.
Using a 7/64 drill I reamed out old holes in the zamac side frames and squeezed the brass bearings into the slightly undersized holes
After filing brass flush, I reassembled the trucks and the now the F-unit runs better than new.
Good health! OTTB

Edited by - offtrackthoroughbred on October 11 2014 1:28:50 PM
 Country: USA  ~  Posts: 129  ~  Member Since: November 26 2009  ~  Last Visit: May 26 2024 Alert Moderator 

PGE33
Hudson

CanadianPacificBeaverAvatar

Status: offline

 Posted - October 11 2014 :  3:28:25 PM Link directly to this reply  Show Profile  Add PGE33 to Buddylist
Brilliant!!
I may try this myself.
Thanks for sharing the idea.

Evan
 Country: Canada  ~  Posts: 505  ~  Member Since: August 09 2014  ~  Last Visit: October 11 2022 Alert Moderator  Go To Top Of Page

JNXT 7707
Big Boy


Status: offline

 Posted - October 11 2014 :  4:01:40 PM Link directly to this reply  Show Profile  Add JNXT 7707 to Buddylist
Yes thanks for posting - I would have never even thought about the sideframe bearings, other than to oil them. Great idea!
http://tycodepot.com/
 Posts: 2451  ~  Member Since: April 11 2013  ~  Last Visit: June 26 2019 Alert Moderator  Go To Top Of Page

NickelPlate759
Big Boy



Rivarossi Logo

Status: offline

 Posted - October 11 2014 :  8:45:17 PM Link directly to this reply  Show Profile  Add NickelPlate759 to Buddylist
Very clever solution, not unlike Mantua's replaceable brass bearings. Those older Athearn sideframes for the pointed axles do wear, especially with the added tension from rubber bands in Hi-F units.
The Tyco Depot
 Country: USA  ~  Posts: 3927  ~  Member Since: June 20 2007  ~  Last Visit: November 19 2015 Alert Moderator  Go To Top Of Page

ScaleCraft
Big Six

Status: offline

 Posted - February 20 2015 :  1:27:05 PM Link directly to this reply  Show Profile  Add ScaleCraft to Buddylist
I know this is almost a year and a half since the last post. One other thing to look for on older Athearn units is the kingpin for the trucks.
I rebuilt a whole box of these that had been in the family since the 50's and 60's. Cleaned and lubed, including the kingpin ball and socket, put them on the test track and got the old familiar Athearn stutter and headlight flicker.
It was the kingpin ball and socket.
No matter how much you clean, the pot metal just is not a good conductor in that area.
So, I found an open spot on the truck bolster (opposite the power pickup), drilled and tapped 2-56, added a wire with eyelet soldered on to each truck, ran them back to the screw that held the brushplate onto the motor (frame ground), although you could attach anywhere on the frame....and for the first time in my recollection I had Athearn diesels that didn't stutter.
Dave
 Country: United Kingdom  ~  Posts: 350  ~  Member Since: April 26 2013  ~  Last Visit: May 18 2024 Alert Moderator  Go To Top Of Page

AMC_Gremlin_GT
Big Boy



GremlinBL2

Status: offline

 Posted - February 20 2015 :  9:13:22 PM Link directly to this reply  Show Profile  Send AMC_Gremlin_GT an AOL message  Send AMC_Gremlin_GT a Yahoo! Message  Add AMC_Gremlin_GT to Buddylist
As I've gotten into model train repairs "professionally", I'm running across problems like this, where the main problem is the design is not conducive to conducting electricity well through a movable frame part. Direct contact via wiring or a steady contact is required to bring these old units up to a more reliable carrier of current. I put some copper mesh into the front truck of a Mantua RF-16 Shark, and it improved performance over the formerly axle-point only contact tremendously. Making new bearing surfaces like this is a pretty fine upgrade. Not sure I could do that well. :) Nice job! But sometimes you gotta improvise to get the older stuff running better.

Jerry

" When life throws you bananas...it's easy to slip up"
 Country: USA  ~  Posts: 3974  ~  Member Since: January 04 2009  ~  Last Visit: January 11 2019 Alert Moderator  Go To Top Of Page

microbusss
Big Boy





tiger

Status: offline

 Posted - February 21 2015 :  07:45:04 AM Link directly to this reply  Show Profile  Add microbusss to Buddylist
neat
I'd not mind a set of these trucks for my rubber band drive UP loco
 Country: USA  ~  Posts: 14698  ~  Member Since: February 23 2009  ~  Last Visit: May 25 2024 Alert Moderator  Go To Top Of Page

RDC1
Hudson

P&R

Status: offline

 Posted - February 21 2015 :  08:45:07 AM Link directly to this reply  Show Profile  Add RDC1 to Buddylist
Do these type of trucks require the side frames to stay together?
~ Dave

They're ALL toys

 Country: USA  ~  Posts: 547  ~  Member Since: December 25 2010  ~  Last Visit: May 20 2019 Alert Moderator  Go To Top Of Page

microbusss
Big Boy





tiger

Status: offline

 Posted - February 21 2015 :  11:48:02 AM Link directly to this reply  Show Profile  Add microbusss to Buddylist
quote:
Do these type of trucks require the side frames to stay together?

Originally posted by RDC1 - February 21 2015 :  08:45:07 AM


actully yes
They are screwed on
Screws are on the bottoms
 Country: USA  ~  Posts: 14698  ~  Member Since: February 23 2009  ~  Last Visit: May 25 2024 Alert Moderator  Go To Top Of Page
  Previous Topic: Seeking instructions Cary shell for Athearn Topic Next Topic: Tank car hazmat placards  
 Printer Friendly
Jump To:
 Image Forums 2001 This page was generated in 0.39 seconds. Powered By: Snitz Forums 2000