Having had to focus on paying the bills more so less time to play and post on the forum for the last many months....

I have found some time to mess around with some proportional sound production - this is work in progress but this is where I have got to...

https://soundcloud.com/user-477761400/model-boat-twin-engine

PS sorry for the abrupt ending(noisy) - not up to my usual standard!

Regards
Jonathan