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HomeAircraftHelicopterFuel-Helicopters New or Limited ActivityJS › Pitch and Throttle Curve
03-07-2011 01:14 AM  7 years agoPost 21
az_heliguy

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San Tan Valley, AZ

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with a gov, you dont check the rpm, you set the rpm you want. i set 1850 for normal, 1950 for idle 1 and 2050 for idle 2.

Mastercard Team Pilot :)

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03-07-2011 05:12 AM  7 years agoPost 22
mattox

rrApprentice

Phoenix,AZ-usa

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i run the os55 and have very good luck with mine.its set up to be tame on normal and a beast on idle up 1 and 2.(Honda411) can back me up on it) try this exact throttle curve for the os 55. i run the 9303 as well.

norm: pl:0 p1:7% p2:15% p3:23% p4:32% p5:46% pH:100%
idle up 1: 100,75,58,48,58,75,100
idle up 2: 100,83,73,70,73,83,100

that should be good. just try it and let me know what you think.
i run no gov on norm. and 1950 on idle 1 and 2200 on idle 2.

hope that helps.

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03-07-2011 08:49 AM  7 years agoPost 23
honda411

rrKey Veteran

Surprise, AZ USA

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mattox is correct. He gave a guideline to simplify your issue.

now my thing you were saying about richening the engine until it stops overspeeding or whatever it was, shouldnt be done. The engine will be too lean and overheat FAST! Go back to factory settings, and then go from there. Im not running the 55, only the hyper 50, so its a bit different.
If your pitch curves are linear, then i would start with your basic linear throttle curve. Hover the model for a minute, and check the temp on the backplate, and should be warm and hold your finger on it for at least 3-4 seconds or more. Then adjust your high end needle for good collective climbout(no hesitation, burping, bogging etc.) but also maintaining that temp. Once u got that pretty good, adjust the low end for no hesitation.
On the low end, hover the model and then bring it down to the ground and cut the throttle to idle. If the engines RPM's come up, engine quits, or has like a high idle, then its not correct. Usually high idle during this means too lean(im 90% sure haha)
The mid range needle i have no clue, due to me having the 50 hyper, so apologies there.
Once your in the ballpark of where you have the settings, then I would adjust your throttle curve to get the heli to react as you wish. Never adjust a good needle setting to get higher rotor speed (by leaning the needles). Adjust the throttle curve, say to give more higher speed at hover for example. This is how i did it, and there are many ways other people do it also. It never hurts anyone to give there ideas or thoughts, and of coarse all are welcome to share their ways.
And again, if i am wrong at all, by all means, someone please correct me so i have future knowledge lol.
Remember temperature!!!!! There is never a perfect range of operating temperature as some engines run best hotter or colder than others; this is just kinda a guideline to hopefully help.

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03-10-2011 01:11 AM  7 years agoPost 24
Spanky17

rrNovice

Savannah, GA

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Guys thank you for all the support. This Friday I am going to the field and hopefully it works again THANK YOU! I will post the results.

I do it upside down

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03-23-2011 06:55 AM  7 years agoPost 25
mattox

rrApprentice

Phoenix,AZ-usa

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howd it work?

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