Thanks Derek this build really is a work in progress and is changing all of the time mainly based on feedback from this forum. I'm still trying to move the lubricator in front of the throttle but I'll keep you updated.
Onto the motor - I've seen quite a few different examples of converting the hackworth gear so that it can be moved by a servo and I've always thought that simple = good.
I stripped the motor down and drilled out and tapped the hackworth mechanism so that it would accept a 3mm stainless steel stud and then screwed a snap link onto the back. I also needed to turn the detent bar around to allow for a smooth operation and I drilled and tapped a 2mm hole to fit a bolt which acts as a stop. I read on this forum somewhere that if the actuating arm moves too low it may possibly bend the valve spindles. I don't know if this is correct but I did it anyway. I then simply moved the whole mechanism to one side so that it slid easily up and down the smooth side of the detent bar.



Now I can sum this first effort up in one word -
FAIL!!! Unfortunately when I went to put the cylinders back on the 3mm stud was in the way so moving it all to one side simply will not work. I found the solution but modifying another snap link which allowed me to centralise everything again.



I'm glad to say this solution works very nicely

Its easy to do and sturdy; if I was doing it again I think that I would use 2mm studding as that would be ample.
Next was a modification to the hull to get the new mechanism in with the little bit of clearance too.


Which was then connected to a operating servo; I made the servo arm a little longer as the throw on the hackworth gear is long. It all seems to work very nicely and I'm hoping that by keeping it simple I won't have too many issues once its on the water.



Next was to fit a servo for the throttle. I have used some really nice stainless steel servo mounts that are available from Clevedon Steam.



And finally the boat so far with all of the hot pipework insulated including the motor manifolds.

The next job is to modify the funnel so that it fits the model and also run the exhaust up it.
Thanks for looking - Mark