These are my actual turbines going together.

Stainless steel compressor housings.

The original t53s I beleave had magneasium.
Which salt water loves.

One of the features which was built into the original
rigging was a sound elimination device. This was used
around the dock so you dont have to scream at your wife
or girlfriend to grab the freakin dock line.

Stay tuned for the details.

Sounds feasible to use the T53 Variable governor to alter the maximum load. I would still use a pulse counter to activate a relay closing the fuel solenoid + brake in case of any shaft or gear failures this will stop the N2 over-speeding wile under full load.
Then use a temp control system to close the same fuel solenoid if the engine over-temps at any point this means you don't need to watch the EGT all the time, as any over-temps that take place will shut the engine down automatically before any blades are damaged.
These units are widely used in commercial temperature control and have more than one alarm set point that can trigger relays/lights ect.

I gather you don't what to cover those nice shiny hot sections with a containment blanket!
Ever wondered why the hydroplanes have blankets on there hot sections?

Maybe you should have a look at this

http://www.youtube.com/watch?v=5F-I0...elated&search=


I know it a bigger motor but there is still a huge amount of energy in those T53 N2 turbines at 100%+

T53 Containment test
http://www.tc.faa.gov/its/worldpac/techrpt/ar98-22.pdf

Go down to the pics at the bottom.

A little Kevlar is worth its weight in gold

Normal operating range for a T-53 is between 900 and 1150 degrees F. Normal cruise operating( TIT, turbo inlet temperature) temperature range at altitude for a turbo piston plane is 1650 degrees F. My plane has not melted down yet and has no blanket.

Never had a hot section problem in any motor other than the PT6 and those will scatter and when they do it puts holes everywhere.

Yep I agree they are generally very reliable, but for the price of containment blankets its cheap insurance to have. If one does let go be prepared to loose your boat and anyone around it!
Don't get me wrong I am not against turbines but you need the right safety measures in place when using them in boats otherwise the unlimited hydroplane and tractor pulling teams wouldn't use containment would they?

Airliner engines are supposed to stay together also but here's one that didn't.

Let's put the racers in perspective.

Both the unlimited and the tractor pull guys are over speeding the turbines. Way different scenario than that of the pleasure boater or 99.9% of turbine users.

Blankets are cheap, use them but be realistic about why things happen and don't be fooled into something for the wrong reasons.

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Gerry, Boy have u-got them all going ! Thought you just wanted a couple of new popcorn makers. But as you know if the foil gets torn you have one helllllll of a mess and all that iced down beer will not kool it off ! Will talk to Paul about shooting down sometime as always best wishes J 1CE:food-smiley-007:Be safe I know u-will.

Menace. Which 46 Skater is yours?