phillip wrote:

Paul,

  Thanks for getting me back on the newsfeed so fast. I missed it. :)

So, question one:

A friend of mine is toying with twin 13b's in a ski boat. He'd like to
keep one drive and prop (jet pump I think). How can you couple two
engines like this so if one goes belly-up, the other is still operating?
He wants to turbocharge both engines...ya!

I'd like to do the same in a coaxial helicopter "project" we have going
on paper.

Thanks
Phil

You need one way or free wheeling clutches. One engine quits the other will still
provide power.

Paul Lamar
 
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