Modified Mamod couplings.
Posted: Fri May 30, 2014 8:11 am
Hi,
Over the last couple of years after a break of many years I have done some work on several Mamod locomotives but nothing to any of their rolling stock. The alterations to make a Lagos Tram engine from a Mamod (another thread) changed this. A decision whether to retain the original couplings or fit new needed to be made. In the event the original buffers were altered to become centre buffer/coupling. This isn't a new idea I have many spare buffers from a long time ago to prove it.
To do this type of conversion for each locomotive/wagon four 6BA screws and nuts are needed to replace the buffers and hold the buffer beam on and in the case of the wagons hold them together. The original coupling needs to be removed and a 2.9mm hole drilled where it was. Alterations to the buffers; the buffer stock is glued onto the buffer head (Araldite/Loctite), a section of the buffer head is cut off to clear the coupling, a 1.6mm hole drilled through the buffer stock to take a 1/16" brass rod bent as a coupling hook which is glued in place. The coupling hook can be bent to use a loose coupling or one of the hooks can hold the coupling captive.
These couplings work very well both pulling and pushing and the original Mamod round coupling link works very well, not so their oval style one which can sometimes jam when pushing.
Hook type.
Captive type.
Pulling.
Pushing and will easily negotiate Mamod curves.
Loose coupling.
The two spare buffers from each conversion can be used on scratch built wagons or as embellishments to a child's toy.
Regards Tony.
Over the last couple of years after a break of many years I have done some work on several Mamod locomotives but nothing to any of their rolling stock. The alterations to make a Lagos Tram engine from a Mamod (another thread) changed this. A decision whether to retain the original couplings or fit new needed to be made. In the event the original buffers were altered to become centre buffer/coupling. This isn't a new idea I have many spare buffers from a long time ago to prove it.
To do this type of conversion for each locomotive/wagon four 6BA screws and nuts are needed to replace the buffers and hold the buffer beam on and in the case of the wagons hold them together. The original coupling needs to be removed and a 2.9mm hole drilled where it was. Alterations to the buffers; the buffer stock is glued onto the buffer head (Araldite/Loctite), a section of the buffer head is cut off to clear the coupling, a 1.6mm hole drilled through the buffer stock to take a 1/16" brass rod bent as a coupling hook which is glued in place. The coupling hook can be bent to use a loose coupling or one of the hooks can hold the coupling captive.
These couplings work very well both pulling and pushing and the original Mamod round coupling link works very well, not so their oval style one which can sometimes jam when pushing.
Hook type.
Captive type.
Pulling.
Pushing and will easily negotiate Mamod curves.
Loose coupling.
The two spare buffers from each conversion can be used on scratch built wagons or as embellishments to a child's toy.
Regards Tony.