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Old 04-07-2008, 02:41 PM
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Awsome.

Lets put A big block chevy threw these tests.
http://www.youtube.com/watch?v=5xlObdXF8VE

Remember Saftey first accidents cause people!
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Old 04-07-2008, 03:02 PM
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Awsome.

Lets put A big block chevy threw these tests.
http://www.youtube.com/watch?v=5xlObdXF8VE

Remember Saftey first accidents cause people!
Cool video, See what I mean, the power comes off N1. Doug
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Old 04-07-2008, 04:01 PM
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Ok here I go to Geekville for a minute.

N1 is the gas producer. It is a two stage gas producer turbine
that also drives a axial centrifigual compressor. It consists of
two gas producer nozzles and two turbine wheels. This gas producer directs the gas flow onto the Turbine Wheels. (N2)
N1 max rpm is approx 26,000 rpm


N2 consits of two turbine wheels this is mechanicaly independent of the N1 system which is called free power turbine. Free power Turbine allows constant turbine power speed while varying gas producer speed to maintain power.
The n2 system has a reduction system which brings the
rpm down to 6,600 rpm.

Here is why these work well in a boat.
Because the N2 is not mechanical connected to the n1
the output shaft can actualy be stopped for a short period
at idle. This enables the ability to connect a standard SCS
type crash box. to the output. Now we have shift capability
rig a caliper stop the shaft and choose your forward, reverse
or neutral.

No that I spewed all this BS I,m going to grab a Corona!
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Old 04-07-2008, 04:34 PM
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In the GE 90 video N2 is the gas producer. I don't know why they label them differently. Your way is how it was in the helicopters I flew. These are 700 HP Turbomecca's. They are hooked together with a overrunning clutch, so if one quit the other one didn't drive it. Doug
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Turbine Motors-100_0494-medium-.jpg   Turbine Motors-100_0496.jpg  

Last edited by outriggers; 04-07-2008 at 04:43 PM.
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Old 04-07-2008, 10:00 PM
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If you listen closely you can actually here the N2 begin to start.
It kinda sounds like a second turbine begin to spool.
That is a very loud N2 section if it's not the other engine spooling. Do you monitor for hot starts yourself or do you have an electronic engine management system? I ask because an apu is really impractical for a boat (for obvious reasons) and battery starts are too slow. I guess your setup is really no different than the ones we use in our helicopters. I have two turbines which feed into a combining transmission which feed into one driveshaft. I could see how the application really would not be too complicated other than gearing down the driveshaft and configuring your transmission.

Great work!
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Old 04-07-2008, 11:25 PM
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If any of you guys need some advice on turbine instalations in boats, please give me a call @ 954 979-4409.
I will be more than happy to give some advice.

John Arruda
Turbine Marine Inc
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Old 04-07-2008, 11:35 PM
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If any of you guys need some advice on turbine instalations in boats, please give me a call @ 954 979-4409.
I will be more than happy to give some advice.

John Arruda
Turbine Marine Inc
What do you know about T-55s?
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Old 04-08-2008, 12:32 AM
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Default fuel ?

[QUOTE=outriggers;2516308]
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Doug is that you standing infront of that jet engine in your Avitar?? Ya may wanna take a few steps away

Yup, Thats me, GE CF6 If somebody hit the starter I would have a few seconds to bolt. On average burns about 750 Gallons per hour. I'm a turbine fan,(pun intended) Nothing like hitting the starter then hearing the igniters snap and the smell of kerosene that I never get tired of. Knot you will like this pic.
Out, what hull is that in the pic ? is it yours ? NICE_RIDE anyways what do you think about fuels and "mixtures" w/kero ? Gerry, turbine 101 all over again absolutely fantastic ! thanks for all the turbine insight from all u-guys !
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Old 04-08-2008, 07:46 AM
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Originally Posted by 47pilotsteve View Post
That is a very loud N2 section if it's not the other engine spooling. Do you monitor for hot starts yourself or do you have an electronic engine management system? I ask because an apu is really impractical for a boat (for obvious reasons) and battery starts are too slow. I guess your setup is really no different than the ones we use in our helicopters. I have two turbines which feed into a combining transmission which feed into one driveshaft. I could see how the application really would not be too complicated other than gearing down the driveshaft and configuring your transmission.

Great work!
I have the original Pyrometer system of the 13b
it takes its reading based on average of all 8 thermocouplers.

I am currently adapting a auto monitoring system.

Do you have the ability to stop your output shaft?

Gerry
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Old 04-08-2008, 07:54 AM
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Originally Posted by J Arruda View Post
If any of you guys need some advice on turbine instalations in boats, please give me a call @ 954 979-4409.
I will be more than happy to give some advice.

John Arruda
Turbine Marine Inc
Mr. Arruda
Thank you for yor offer.

One off the top of my head.


What are you doing with the govenor?
locking it down at a given percentage?
Added another shift lever, and run on the govenor as the throttle?

Oh yeah can I borrow Haggins black American express cards so I may rig a couple more Turbine boats
up here?


Congrats by the way on the Biloxi runs.
Gerry

Last edited by KNOT-RIGHT; 04-08-2008 at 07:57 AM.
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