KNOT-RIGHT

John do you still have a T55 boat in your arsenal?

The 53,s are amazing I cant even imagine a 55 boat.

KNOT-RIGHT

Keep in mind these engines can run at maximum takeoff power for up to 15 minutes.

A Gas Turbine engine is far superior to any piston counterpart
period. Its physics.


Here are some plots off a T53 13B. John may have some of the 703 versions.

KNOT-RIGHT

its relative to the rotational speed of n2.

In case you were wondering this is what they came out of.



Think they have enough torque to move the Mystic?

Racerngr1

Now if we could just get someone to make some 500HP turbines to compete with all these 525's.

invader

knot-right these are very impressive motor. I have never said they weren't. I was pretty sure J Arruda was incorrect with his statement that at 5700 they would make 4000 ft/lbs of torque. These motor dont drop off like piston motors. They have a very steady increasing torque curve that builds with rpms.

invader

ii

chewiekw

Why would they race this boat with that kind of power? Are you sure its not for a kilo run?

Racing with this kind of power legal or not is not what this sport needs right now...

I think its great that they are trying some new things and we all know they have been great for the sport...

those are just my thoughts...

KNOT-RIGHT

sorry if i misunderstood your post.

John may be slightly off with his numbers However he is right on with his formula. Its not his first rodeo

Here is a the actual formula

Calculating Braking Torque:

Full-load motor torque is calculated to determine the required braking torque of a motor.
To Determine braking torque of a motor, apply this formula:

T = 5252 x HP
rpm

T = full-load motor torque (in lb-ft)
5252 = constant (33,000 divided by 3.14 x 2 = 5252)
HP = motor horsepower
rpm = speed of motor shaft

Example: What is the braking torque of a 4572 HP motor rotating at 6000 rpm?

T = 5252 x HP
rpm
T = 5252 x 4572
6000
T = 24,012,144
6000
T = 4002 lb-ft

J Arruda

Yes sir. We are building 2-T55 powered boats at the moment. I will update things on my web pages soon. I have 9 boats under construction at the moment, so there is not that much time for anything else.

Thanks for asking.
JA

J Arruda

Not correct. They operate the same as a gas engines.
Torque is equal to Hp at 5252rpm. As rpm increases, turque decreases abd hp increases just as a gas engine does.

J