Mammoth vs p-200 vs JB 220
06-23-2013 | 04:42 PM
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From: Baton Rouge, LA
Mammoth vs p-200 vs JB 220
Ok, time to stir up some feathers...[8D]
So needing to decide on a larger turbine for an upcoming project and want to get some input for people THAT ARE NOT SPONSORED OR REPS that have on hands experience with these turbines.
I have never seen either the JC mammoth or the JB 220, but I have a JB 180, very nice engine, produces a lot of power and very brutal acceleration without hesitation.
The P-200 I have seen fly, seems good, I have only had a P-240 in this range and it does have some lag (about 5.5 seconds from idle to full power) and can stutter some times accelerating.
Dealing with BOB C. have been excellent, and Peter A. is also very good. Haven't had any JC turbine before so no experience.
Main issues are, SPEED of turbine not just thrust, I would like a turbine that produces the most speed not just thrust so the highest exhaust speed will be the best.
So needing to decide on a larger turbine for an upcoming project and want to get some input for people THAT ARE NOT SPONSORED OR REPS that have on hands experience with these turbines.
I have never seen either the JC mammoth or the JB 220, but I have a JB 180, very nice engine, produces a lot of power and very brutal acceleration without hesitation.
The P-200 I have seen fly, seems good, I have only had a P-240 in this range and it does have some lag (about 5.5 seconds from idle to full power) and can stutter some times accelerating.
Dealing with BOB C. have been excellent, and Peter A. is also very good. Haven't had any JC turbine before so no experience.
Main issues are, SPEED of turbine not just thrust, I would like a turbine that produces the most speed not just thrust so the highest exhaust speed will be the best.
06-23-2013 | 04:58 PM
#2
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RE: Mammoth vs p-200 vs JB 220
Are you talking speed of the spool up or efflux?
Efflux for our turbines is WAY WAY above any speed that you will ever reach with an aircraft. Limiting speed for our aircraft is drag not efflux. Drag increases by the cube root. The only way to increase speed with our jets is to limit drag.
Efflux for our turbines is WAY WAY above any speed that you will ever reach with an aircraft. Limiting speed for our aircraft is drag not efflux. Drag increases by the cube root. The only way to increase speed with our jets is to limit drag.
06-23-2013 | 05:03 PM
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From: Baton Rouge, LA
RE: Mammoth vs p-200 vs JB 220
efflux = exhaust speed correct? form what I understand the faster the efflux the faster the aircraft will fly, so 50 lbs of thrust @ 100RPM vs 50lbs of thrust @ 125 RPM, the 125 RPM would be faster I assume, where as the 100 RPM will have more "torque" or static thrust.
06-23-2013 | 09:52 PM
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RE: Mammoth vs p-200 vs JB 220
ORIGINAL: DiscoWings
efflux = exhaust speed correct? form what I understand the faster the efflux the faster the aircraft will fly, so 50 lbs of thrust @ 100RPM vs 50lbs of thrust @ 125 RPM, the 125 RPM would be faster I assume, where as the 100 RPM will have more ''torque'' or static thrust.
efflux = exhaust speed correct? form what I understand the faster the efflux the faster the aircraft will fly, so 50 lbs of thrust @ 100RPM vs 50lbs of thrust @ 125 RPM, the 125 RPM would be faster I assume, where as the 100 RPM will have more ''torque'' or static thrust.
06-23-2013 | 10:13 PM
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From: london, UNITED KINGDOM
RE: Mammoth vs p-200 vs JB 220
Minimilise drag,minimilise AUW, then add just enough power to take the aircraft past its limits of design as anymore is a waste of energy .
