Dyno pull- Miss GEICO- project X
09-26-2010, 11:51 AM
#52
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...
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...
09-26-2010, 12:27 PM
#53
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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.
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
09-26-2010, 01:22 PM
#54
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Thanks for asking.
JA
09-26-2010, 01:28 PM
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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.
Torque is equal to Hp at 5252rpm. As rpm increases, turque decreases abd hp increases just as a gas engine does.
J
09-26-2010, 01:30 PM
#56
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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
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
Thanks for correcting me. I did it on the fly to make the point.
JA
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09-26-2010, 02:28 PM
#58
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the baddest boats on the freakin planet.
Ya better hold on to ya cunyangas when smash those throttles
on the 55 boats.
09-26-2010, 04:08 PM
#59
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Do you forsee ever having smaller turbines that the common person could own/afford, for instance to take place of a 525 or 600sci?
09-26-2010, 08:25 PM
#60
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Turbines only make sense over 1200hp, if you want my opinion.
Last edited by J Arruda; 09-27-2010 at 07:02 AM.
