RailPro User Group

General => General Discussion => Topic started by: atsfguy on December 03, 2018, 09:32:25 AM

Title: Twin coil switch machines
Post by: atsfguy on December 03, 2018, 09:32:25 AM
 Alright, Ihave one for our electronics guys.
I have 15 switch machines from the 1970s that I would like to use on the road I am building. These were made in Watford, England, by Hammant and Morgan. When new, these machines worked very well and I really like them but now I canít get them to function.
I have cleaned and oiled them as the instructions specify but they will not throw. They are AC/DC and I have tried both a trainpack and a 15volt 2 amp power supply off Ebay.
I have wired them per the instructions to no avail. I will greatly appreciate any any and all suggestions, even if it is to discard them. I have worked on them several times, thinking I will eventually find the solutions but finally decided to poll this group for help. BTW, I have an old, new in box Kemtron machine that refuses to operate also.
Thanks for your help.
Cecil
Title: Re: Twin coil switch machines
Post by: Alan on December 07, 2018, 01:33:05 PM
I am not familiar whatsoever with the machines you are describing however, that doesn't mean we can't figure it out together.

Can you post several good photos of them so I at least can see them. We can take it from there.
Title: Re: Twin coil switch machines
Post by: Alan on December 08, 2018, 06:54:58 PM
Cecil, thanks for sending the images. I posted them here so all can see and help you.

sw_mach_1.jpg

sw_mach_2.jpg

sw_mach_3.jpg

sw_mach_4.jpg

These are old twin coil switch machines. Off the top of my head I would suggest:
Let us know how you make out.
Title: Re: Twin coil switch machines
Post by: atsfguy on December 10, 2018, 07:24:35 AM
 Thanks, Alan. I tried all your suggestions last week with no success, so into the trash they go. I appreciate your looking into the problem.
Cecil
Title: Re: Twin coil switch machines
Post by: Alan on December 10, 2018, 07:32:14 AM
Probably best anyhow. Solenoid machines are rough on point rails. Much gentler to use geared stall or servo.