Sidney Greenstreet wrote:

That's right! People are discussing technical sailing issues and learning!
Metallurgy, sails, forces, rocket planes - it's all here folks.

Betcha didn't know about torsionally pre loaded propeller shafts - they
triple the life of your transmission by absorbing the shock of shifting into
gear. They also reduce cavitation!

No, I didn't know that.... BTW how do you "torsionally pre load" a shaft, keep a
brake on it until 100% load is reached? Doesn't sound too practical. And I think
that if anything, a torsionally pre loaded shaft would exaggerate cavitation &
shock loading on the tranny.



Can't use them on rocket planes because
they have no transmissions. But if they did, they'd be swell!

Another handy tip - use leather gaskets on your liquid oxygen systems!

Sounds like a good way to have a very dramatic fire.



Next lesson - predict the tides with an octant!

What happens when the octopus' big brother comes along to get it back?

You're a hoot Gilly, please stick around.

DSK