thanks pete, I will have a play with your latest link, there must be something I can do with those sounds, we are now on the right sort of sound,
that old dumper truck isnt that far away! My model has a sound unit in it, that has an sd card facility, operated from ther transmitter to pick tracks, the boat is the Orca from jaws, and its the battered thrashed engine sound I want !
I have various music and dialogue tracks from the film, which using audacity are played over the engine sound, and I have just the engine sound on a loop, but unfortunately the loop I did, and the sound I used isnt that good. Its taken a while to get the sound unit to the point that it works really well, so now I want to improve the recorded tracks. Music and dialogue is easy from the net, as I run the boat at slow speeds, and dont have throttle proportional engine sound, the engine sound I want is reasonably slow, bit like an old 4cyl diesel, I might be being fussy, but when I hear it I will know thats the one!