Removing Motorboating Sound from Audio

[nostalgia]

This clip has this motor boating sound (like dadadadadadadadadada). Very annoying. This seems to be common in a lot film transfers I've had done over the years.

What tool would you use to remove it or at least mask it? I've tried noise reduction and others.

I just purchased iZotope RX 6 which is supposed to be great for things like this but don't really know how to describe my problem to find a particular tutorial to use it.

Can anyone on here help me out with this?

Thanks!

[nostalgia]

Oops forgot to attache file. Here it is.

[raffriff42]

Audacity noise reduction works pretty well, did you say you tried it?

[Attachment 43173 - Click to enlarge]

Could be combined with a noise gate if needed.

EDIT changed noise reduction amount to 24dB.
It kills the ambient sound pretty well too, unfortunately.

[netmask56]

It sounds like it is coming off an optical film soundtrack and the noise is sprocket noise. Any of the above suggestions should be able to fix it. http://duc.avid.com/showthread.php?t=360138

[jagabo]

Yeah, Audacity removes it pretty well. Find a sample without the wind howl in the background to train the filter. That way you won't lose the wind in that shot.