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Msg ID: 2748847 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +1/-1     
Author:How much flight time roughly.
11/5/2022 12:08:38 PM

What do you use for fuel burn per hour ?

TIA



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Msg ID: 2748848 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +1/-2     
Author:MD guy
11/5/2022 12:11:01 PM

Reply to: 2748847

Which engine?



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Msg ID: 2748851 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +0/-1     
Author:C20
11/5/2022 12:23:25 PM

Reply to: 2748848

Not sure which engine is better over the other  


but it's the ALLISON 250-C20.  

Good, bad and the ugly ?



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Msg ID: 2748853 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +1/-0     
Author:MD guy
11/5/2022 1:01:23 PM

Reply to: 2748851

Most 500Es have the C20B, some have the C20R. I use 28 and 30 but thats conservative.



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Msg ID: 2748984 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +0/-0     
Author:Pelican 231
11/7/2022 11:57:54 AM

Reply to: 2748853

Had a 500E -20C and down low and maxed out it burned 31 on a Electronic fuel flow read out 



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Msg ID: 2748854 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +1/-0     
Author:which engine, he asks
11/5/2022 1:04:36 PM

Reply to: 2748848

lol now there's a guy you want fuel burn advice from



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Msg ID: 2748856 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +0/-1     
Author:10K in 500’s
11/5/2022 1:54:00 PM

Reply to: 2748847
I don’t find any difference between the C20B and C-20R fuel burn wise. 25 per hour. Most utility guys use 100 pounds indicated or 1.5 hours on the ground as a limit.
That with standard fuel tank no extender


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Msg ID: 2748861 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +0/-2     
Author:uh
11/5/2022 3:09:39 PM

Reply to: 2748856

weight doesn't matter. amount of power used does. the engine doesn't know how much the helicopter weighs, only what you're asking it to do. IOW, whether you're by yourself or at GW, the fuel burn is the same when using the same power setting. speed is affected though.



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Msg ID: 2748863 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +0/-1     
Author:curious
11/5/2022 4:17:05 PM

Reply to: 2748861

So the c20 engine is using all 420hp at gross weight and empty? Because at gross im asking it to do a lot more than empty? The fuel control wouldn't adjust the fuel scheduled depending on load, which would make weight an issue? Maybe I missed something?



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Msg ID: 2748865 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +1/-1     
Author:torque. it's all torque
11/5/2022 4:48:14 PM

Reply to: 2748863

The fuel control adjusts on how high you raise the lever. The lever IS THE LOAD as far as the engine and rotor is concerned. If you normally fly at 70% or 80% or whatever percent torque, you will burn the corresponding amout of fuel for that torque setting, doesn't matter what you weigh. The engine and rotor system have no idea what the helicopter weighs, it just know what you're asking it to do with collective. Lighter weight may require less power on take off and landing, but it's insignificant in the big picture as hoving and climbs often require lots of power.



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Msg ID: 2748867 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +0/-1     
Author:Dope
11/5/2022 5:20:47 PM

Reply to: 2748863

If you’re pulling 420 HP in a E model, you are overtorquing the helicopter...



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Msg ID: 2748866 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +4/-1     
Author:Weeds
11/5/2022 4:59:32 PM

Reply to: 2748847
Man we got deep in the weeds. All answers are correct but damn, the guy wants and easy answer. 25-30 gallons per hour friend. Basically 2 hours to empty what you do in those 2 hours is up to you. Straight and level or yard Christmas trees around 10 acres.
That said, I do not recommend more than 1.5 hours for anything


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Msg ID: 2748872 One guy says 1.5 hrs flt time. Another says 2 hrs.  +0/-4     
Author:25 gal an hr.
11/5/2022 6:17:14 PM

Reply to: 2748866

25 gal an hour.   60 gallon tank ?

 

Sounds like you get 2 hrs plus your 20 reserve.  

Not sure how the one pilot comes up with 1.5 hrs.  



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Msg ID: 2748892 Personal Reserve! (NT) +0/-1     
Author:above regulatory
11/6/2022 9:44:11 AM

Reply to: 2748872


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Msg ID: 2749095 Personal Reserve! +0/-1     
Author:100
11/8/2022 10:07:14 PM

Reply to: 2748892

100 lb limit period! 1.5 hours max be on the ground . 



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Msg ID: 2749149 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +0/-1     
Author:Devils in the Details
11/9/2022 6:03:05 PM

Reply to: 2748847

What altitude and tempurature would you be operating at? Sea Level & 50 f, average while "working" = 30 GPH, 8000 MSL & 50 f, maybe 24 GPH?



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Msg ID: 2749182 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +0/-1     
Author:No
11/10/2022 10:01:36 AM

Reply to: 2749149

If you do it like this guy you dead. It'll catch up to you sooner or later. 1.4-1.5 hours  you best be on the ground. 



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Msg ID: 2749976 Lots of MD guys here. MD500E. Topped off, 2 thin souls.  +1/-0     
Author:I have a swivel hourglass mounted
11/20/2022 5:35:25 PM

Reply to: 2748847

by scotch tape on my instrument panel that has never let me down. Maybe because it ran out of sand in 1938. 



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