This is a local 16mm NGM loco who liked the sound of my Regner whistle fitted to my Riverdale coal fired 'Smokey Sophie' so asked me to fit one to his Roundhouse Lady Anne.
As you can see my first attempt at silver soldering failed miserably but then I improved enough to solder an attachment to the actual regulator barrel that would allow a Regner whistle valve to be screwed into it.
The whistle itself has been chemically blackened so it blends into the colour of the chassis (I did originally mount it inside one of the fake water tanks but was concerned about the amount of condensate damaging the Rx, battery and servos).
Next job is to install a new onboard battery and switch harness complete with charge socket and then fit the newly painted boiler cover once the owner repaints this as it had seen better days.
You can read about the project on the Garden Railway Forum:
gardenrails.org/viewtopic.php...