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Old 09-23-2003, 12:04 PM   #1
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Pitch Curve and Throttle Curve Discussion...

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Hi Everyone!

Lets compare our setup for Normal Mode, Mode 1, Mode 2 (if used) and Hold mode. I'm curious and want to get good advise since I made my first forward flight this week-end God, this was soooooo cooooolllllll

I'm just using the Normal flight mode for now and I want to get your opinion.

I want scale flight (JR Robinson R22 with OS-50SXH)

I have a JR8103DT (H) So I can use 5 points curves but just using 3 points for now.

Normal Mode
Throttle Curve : 0%, 45%, 100%
Pitch Curve : -3, +7, +10

I'm hovering at 50%
Is there guys that are using the Mas Technique Setup
This guy told us to hover at 75% for a linear pitch curve?


"I'll hold your checkbook while you fly my helis"
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Old 09-23-2003, 12:18 PM   #2
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I know someone who flies around in normal mode all the time, scares the hell out of me to watch his headspeed bleed off as he descends and the heli develops that telltale mushy wobble....

Yes, even for scale flight, you generally want some throttle on the bottom end of the curve, especially when you're riding out gusts on a windy day.

Auto-rotation, you definitely want to set up your cuves for this mode... trust me,one day, you'll need it and wish you had it. You'll also be wishing you'd practiced it.

I don't have my curves memorized but I think I have a pretty straight throttle curve in normal mode. In mode 1 I added some more negative pitch to support basic aerobatics and controlled height in FFF, I also added throttle (maybe 40%?) to the bottom half of the curve to support FFF descents and loops/rolls etc. Mode 2 is a copy of mode 1 until I'm ready for that 3D nonsense. I did this after accidently clicking through to mode 2... yikes!

THold curve; I added even more negative pitch, to get me down quick, although I find the best for headspeed is around -4 -> -5.

Just to be honest, when it comes to autos, I'm still at the practicing stage (definitely not an expert).

I believe Robert and most of the guys at the Toronto Heli club (some awesome flyers) use Mass technique. I'm using a sim to transition myself but, I'm not comfortable with switching yet.
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Si fractum non sit, noli id reficere - (If it ain't broke, don't fix it).
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Old 09-23-2003, 12:49 PM   #3
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I have the R30 V1 with a TT 36. I have no clue what my pitch in normal is (probably around -3 to 9) My idle up 1 is -4 to 8.5 with throttle at about 40,35,50,65,100 My 3D is -8,5 to 8.5 That runs at 100,75,50,75,100. I hover at 3/4 stick in all modes at about 5.5 degrees pitc and 65% throttle. I'm still fine tuning the rappy after having done the grip flip to it after several woofs ( blades go severly out of track and risk cutting off the tail boom also none as "poof", Luckly I had no poofs). I tried fixing this in all kinds of ways but the only thing that worked was the flip.

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Old 09-23-2003, 03:03 PM   #4
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Here mine goes....

Throttle curves

Normal mode is good enough to fly around in foward flight and come in and land with no over or under speeding unless I pull the stick right down to point one. My rpm is set to about 1400 in normal. Idle up my rpm is set at 1800 (on my 50....I turn my 30 at 1900) I run a gv-1 because it will over speed no matter what you do with your curves. My throttle hold is just idle :P

Pitch curves

Normal curve is +11, 0, -6 my idle up is +11, 0, -11 and my throttle hold is +11, 0, -5

Align R/C, OS Engines, Futaba, Great Hobbies, Hatori, SGP, Morgan Fuels, Castle Creations
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