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Offline Allen Lee  
#1 Posted : 14 September 2020 02:55:25(UTC)
Allen Lee

Australia   
Joined: 15/05/2014(UTC)
Posts: 10
Location: WESTERN AUSTRALIA, PERTH
Greetings all
Please could anyone explain to me how to convert a Hamo loco to a 3 rail
Is it possible and what parts are needed
Thanks for the help
Allen
Offline ktsolias  
#2 Posted : 14 September 2020 10:12:13(UTC)
ktsolias

Greece   
Joined: 01/05/2016(UTC)
Posts: 498
Location: Athens
Hi

First think is to see if is possible to fit a pick_up shoe. (space etc.)

Bridge electrically the wheels both sides

Change all the electrical connections to have finally two wires: A red coming from the pick-Up shoe and a brown from the the wheels - frame.

Install a decoder and make the appropriate connections to the motor lights etc.

Usually the motor is OK and does not need any change.

Is not easy if you are not familiar with Marklin locos

Better advises if you tell us exactly the catalog no of the loco and even better if you post some photos of the inside of the loco


Costas
Online xxup  
#3 Posted : 14 September 2020 13:06:19(UTC)
xxup

Australia   
Joined: 15/03/2003(UTC)
Posts: 9,047
Location: Australia
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Offline JohnjeanB  
#4 Posted : 14 September 2020 13:07:00(UTC)
JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 1,072
Location: Paris, France
Hi Allen
It depends on the Hamo model.
If it is a Märklin model converted to 2 rails by Hamo then the issues are:
- replacing the Hamo wheel slider by a 3rd rail Märklin slider
Hamo slider
hamo slider.jpg
Märklin slider
Marklin sliders.jpg
Thanks to Schnug-Modellbahn

- replacing the insulated axles with normal Märklin ones (not mandatory but better current pick-up and detection by contact rail for signalling etc)
- installing a decoder (or over-voltage inverter) to drive the DC motor and set its direction.
Note: if the loco has non-driver wheels, removing some of them and re-inserting them on the other side will provide part wheel contact (through the metal frame)
On very old Hamo prior to Märklin purchase, I don't know
I hope this helps
Jean
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