Gas Turbine Sunseeker Mexico

[gazza]

Originally Posted by PJC

Cool powerplant, we are currently fitting a pair or T53's (1850hp each) into a 50' cat to race in America in the SBI series, should be on the water in tow or three weeks

50' Mystic??

gaZ

[Gasturbine59]

Just hauled it out for some barnacle cleaning! at Cowes Dry Sailing, many thanks to Tristan and Steve for their help, got the boat back in the water, but new prop test failed due to a bit of fuel starvation, the offending pump removed and new one will be here soon, 9.9 hp aux merc getting me out of trouble and giving 6knots flat out, so well happy.........

[Tris]

Originally Posted by Gasturbine59

Just hauled it out for some barnacle cleaning! at Cowes Dry Sailing, many thanks to Tristan and Steve for their help, got the boat back in the water, but new prop test failed due to a bit of fuel starvation, the offending pump removed and new one will be here soon, 9.9 hp aux merc getting me out of trouble and giving 6knots flat out, so well happy.........

Happy to help. Would have liked to look over the boat a bit more. Next time. Or if you pass after getting the fuel pump sorted and you need a sea trial helper. Give me a shout.

[Gasturbine59]

OK, moment of madness, I put the whole gas turbine Monterey project on ebay for 10grand !!, it didn't sell, now I have come to my senses and am about to transplant the Allison into waiting Fletcher 17GTS, just craning out the Merc 3.0litre to make some room LOL..............will show you some pictures later, this is a hot rod.....70mph easy!

[PerformanceDodge]

I considered an RR Allison for my Cougar 27 before I started building it. The reasons we opted out were two fold.

The first is that I didn't know how quickly the governor would react to the boat leaving the water at full power and instantly unloading the prop. I suspected that it would not react quick enough and the power turbine would over speed catastrophically as they were not designed for such applications. Around 15 years ago NTC in Canada built one using an Allison hooked up to a Hamilton jet drive but they only ever appeared to run it on flat lakes.

Squirt 1

The second was that the Allison is renowned for its reliability in its original application, however it is one of the less industrial and more fragile engines and we were concerned about corrosion in constant salt water environment of a boat. Especially on the compressor first stage as the blades and stator's are very thin.

Any thoughts on the above.

[beyondhelp]

Originally Posted by Gasturbine59

OK, moment of madness, I put the whole gas turbine Monterey project on ebay for 10grand !!, it didn't sell, now I have come to my senses and am about to transplant the Allison into waiting Fletcher 17GTS, just craning out the Merc 3.0litre to make some room LOL..............will show you some pictures later, this is a hot rod.....70mph easy!

That I want to see.. I get just under 65mph from a 17ft fletcher with a 220 outboard, and its not setup for speed.

Please update with your progress, sounds right up my street!

[Gasturbine59]

Originally Posted by freddy21

I considered an RR Allison for my Cougar 27 before I started building it. The reasons we opted out were two fold.

The first is that I didn't know how quickly the governor would react to the boat leaving the water at full power and instantly unloading the prop. I suspected that it would not react quick enough and the power turbine would over speed catastrophically as they were not designed for such applications. Around 15 years ago NTC in Canada built one using an Allison hooked up to a Hamilton jet drive but they only ever appeared to run it on flat lakes.

Squirt 1

The second was that the Allison is renowned for its reliability in its original application, however it is one of the less industrial and more fragile engines and we were concerned about corrosion in constant salt water environment of a boat. Especially on the compressor first stage as the blades and stator's are very thin.

Any thoughts on the above.

Hi, yes as you say if prop comes out at full chat it would almost certainly overspeed, you need to modulate the throttle, they don't just go bang if you momentarily overspeed, there is a good amount of tolerance. Interesting thought though, as a trained helicopter pilot, one could be cruising along at full chat, then drop the lever on the floor to enter autorotation (airflow reversall through the main rotor) !, this has the effect of instantly removing the load, on some helicopters this is correlated with the power turbine governor, as in the case of the pneumatic governor on the Allison250, but for instance on the Gazelle helicopter, the astazou copes with no overspeed, and no correlation with the pitch lever, but it does use a hydraulic governor.
The corrosion issue is of concern, but again ,proper maintenance wash it with fresh water, the compressor is all stainless steel, so tougher than you think, I have had this Allison in the current boat now on a mooring and it hasn't shown any signs of deterioration. Once installed in the Fletcher it will be kept on a trailer, so i can keep it all dry and polished lol!.

[Gasturbine59]

Originally Posted by beyondhelp

That I want to see.. I get just under 65mph from a 17ft fletcher with a 220 outboard, and its not setup for speed.

Please update with your progress, sounds right up my street!

Thanks for you interest and words of encouragement!, I look forward to my progress!!, lol, will posts pics soon as , rgds

[Gasturbine59]

OK today the Merc 3litre came out, no probs so far!


check this Batboat out on ebay, awesome!!!
Allison Jet Turbine Powered Talon 21 Pickle Fork Powerboat Allison Jet Turbine Powered Talon 21 Pickle Fork Powerboat | eBay

[Gasturbine59]

Originally Posted by Gasturbine59

OK today the Merc 3litre came out, no probs so far!


check this Batboat out on ebay, awesome!!!
Allison Jet Turbine Powered Talon 21 Pickle Fork Powerboat Allison Jet Turbine Powered Talon 21 Pickle Fork Powerboat | eBay

OK , didn't bother with the Fletcher!, but now got a 5.4metre RIb!, much more fun?, been posting progress on Ribnet,
Gas turbine RIB? - Page 3 - RIBnet Forums

[Gasturbine59]

Told ya!, nearly done!