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HomeAircraftHelicopterHelicopter Main Discussion › normal mode throttle curves for electric & nitro the differences discussion
10-23-2014 11:17 PM  4 years agoPost 1
wc_wickedclown (RIP)

rrProfessor

long beach calif

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two questions

1.did i explain this correctly

2.do you think others can understand it.

please tell me if i dont make sense

Watch at YouTube

Insha Allah made in america

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10-24-2014 12:17 AM  4 years agoPost 2
dc8capt

rrApprentice

Clark Lake, Michigan USA

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Is this meant for nitro also? I tried this the other day with my r50 and it worked great. Tried it down to a flat 50 also, but struggled a bit and tail got wobbly. 65 seemed to be the sweet spot. Your starting make some sense out of all this for me. Keep up the good work.

Learning to fly again.

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10-24-2014 01:11 AM  4 years agoPost 3
Mahu

rrApprentice

Panhandle , FL

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You never cease to amaze me wc_wickedclown! You got it down to a "T"
You gotta get your Head right so your tail holds.

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10-24-2014 01:12 AM  4 years agoPost 4
wc_wickedclown (RIP)

rrProfessor

long beach calif

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dc8capt
Is this meant for nitro also? I tried this the other day with my r50 and it worked great. Tried it down to a flat 50 also, but struggled a bit and tail got wobbly. 65 seemed to be the sweet spot. Your starting make some sense out of all this for me. Keep up the good work.
i believe the nitro might need to use a v curve something close to a flat curve
like 0 65 60 65 65 idle up 95 85 80 85 95 my guess

maybe someone else can chime in on nitro curves nitro motors over rev when
descending faster that electric

Insha Allah made in america

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10-24-2014 02:19 AM  4 years agoPost 5
Einzelganger

rrKey Veteran

Campbell, Texas

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I run all my nitros with governors. I set normal @ around 1550 rpm, idle1 around 1700 and idle2 around 1900.

The governor gives constant head speed, so I set a lower gain as the idle-up increases head speed.....i.e. 70% for normal, 60% for idle1 and 50% for idle2.

The curves set underneath in case of sensor failure are linear for normal, and V's for idle1 and 2.

Normal: 4 25 50 70 90

Idleup: 100 75 55 75 100

........or something close to this.

Wayne

I love the smell of nitro in the morning.
RIP Roman

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10-24-2014 02:58 AM  4 years agoPost 6
wc_wickedclown (RIP)

rrProfessor

long beach calif

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and V's for idle1 and 2.
Normal: 4 25 50 70 90
Idleup: 100 75 55 75 100
Einzelganger

thank you

i dont know what complications a person could run into by using flat curves on a nitro i think my theory would still apply or the curves would be better if closer to a flat than a big v.

Insha Allah made in america

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10-24-2014 03:17 AM  4 years agoPost 7
Rockohaulic

rrElite Veteran

Canyon Country, CA, USA, 3rd Rock from the Sun

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An ungoverned nitro will seriously over speed in transitions with a flat curve. And stall turns.

A nitro needs a "V" curve.

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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10-24-2014 03:32 AM  4 years agoPost 8
wc_wickedclown (RIP)

rrProfessor

long beach calif

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Rockohaulic
An ungoverned nitro will seriously over speed in transitions with a flat curve. And stall turns.
A nitro needs a "V" curve.
that makes since thank you

do you think a v curve is necessary for normal mode for a nitro ?

Insha Allah made in america

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10-24-2014 03:45 AM  4 years agoPost 9
Einzelganger

rrKey Veteran

Campbell, Texas

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do you think a v curve is necessary for normal mode for a nitro ?
Not a good idea. I would stick with the linear curve.

Wayne

I love the smell of nitro in the morning.
RIP Roman

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10-24-2014 03:55 AM  4 years agoPost 10
rpat

rrElite Veteran

Weirton, W. Va.

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To put the bird on the ground you would always have to hit TH all of the time with a V curve in normal.

trex 700fbl cal30,minititan,, trx600fbl,trex250,logo 500,Velocity N2

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10-24-2014 05:15 AM  4 years agoPost 11
wc_wickedclown (RIP)

rrProfessor

long beach calif

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rpat
To put the bird on the ground you would always have to hit TH all of the time with a V curve in normal.
please excuse my stupid question lol
Einzelganger
do you think a v curve is necessary for normal mode for a nitro ?
Not a good idea. I would stick with the linear curve.
Wayne
linear curves is not as stable as a near flight curve

with a near flight curve your hovering in normal with more pitch than head speed.

thank you all

Insha Allah made in america

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10-24-2014 05:22 AM  4 years agoPost 12
Einzelganger

rrKey Veteran

Campbell, Texas

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linear curves is not as stable as a near flight curve
with a near flight curve your hovering in normal with more pitch than head speed.
My apologies. I bow to your extensive nitro experience.
I'm out.

Wayne

I love the smell of nitro in the morning.
RIP Roman

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10-24-2014 05:34 AM  4 years agoPost 13
TMoore

rrMaster

Cookeville, TN

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WC, Do you have a nitro?

Delayed Response Operator Not Engaged
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Drones = EVIL

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10-24-2014 12:51 PM  4 years agoPost 14
rcnut

rrElite Veteran

Rockford, Illinois

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WC...for any of my nitro setups, I have normal mode setup like this;

Normal mode
0 = 0% / idle speed
2 = 34%-38% a slight rise in throttle before to much collective
3 = 55% now the motor should be close to liftoff
4 = 75% normal throttle curve
5 = 100% normal throttle curve

I set the position #2 on the radio higher than the default setting of 25%. Reason for this...you want the head speed to spool up faster than the collective pitch. Otherwise you load the motor down with too much pitch during spool up. Then I switch into idle 1 or 2 depending on my mood for flying for the day.

The motor needs to keep ahead of the collective pitch, other wise you load the motor down (a possible lean run) too much and it has to try and catch up. Normal mode is not intented for aerbatic flight, its mainly to just fly around.

In idle1 and or 2, my curve looks like this;

Idle 1.........................Idle 2
1 = 100%..................1 = 100%
2 = 85%....................2 = 95%
3 = 62%-65%...........3 = 74%
4 = 85%....................4 = 95%
5 = 100%..................5 = 100%

These curves are based on the type of motor, muffler, gear ratio, blades, and percentage of fuel I use.
Rockohaulic
An ungoverned nitro will seriously over speed in transitions with a flat curve. And stall turns.
A nitro needs a "V" curve.
This is very true, but if you don't believe us...try it once, see what happens.

Oh, and this might really frost your blades...in normal pitch mode, position 1 is set to 24%-28%, or -7 degrees pitch. I don't need negative 10-12 degrees at idle in normal mode. If something should happen while hovering, I don't need to slam my heli into the ground.

Team Miniature Aircraft
"I love the smell of Nitro in the morning!"
...Citizen 654!

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10-24-2014 03:24 PM  4 years agoPost 15
wc_wickedclown (RIP)

rrProfessor

long beach calif

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TMoore
WC, Do you have a nitro?
yes i have 2

there is no over rev in normal mode sense normal mode does not usually have enough negative pitch

i an understand using the v curb if you dont have a gov for 3d

but linear curves are unstable to me.
Einzelganger
linear curves is not as stable as a near flight curve
with a near flight curve your hovering in normal with more pitch than head speed.
My apologies. I bow to your extensive nitro experience.
I'm out.
Wayne
my apologies wayne im not trying to be a know it all because i am not.

Insha Allah made in america

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10-24-2014 03:31 PM  4 years agoPost 16
wc_wickedclown (RIP)

rrProfessor

long beach calif

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rcnut
i agree with your 3d v curves

there is no over rev when your pitch is 40 40 50 75 100

you can over rev when your pitch is -10 to +10

am i wrong about normal mode with a hover pitch not having enough
negative pitch to over rev ?

i explained in the video why a linear curve to me is unacceptable

i guess it does make sense to some.

i always wondered why some pilots use v curves on electric when electric uses flat 3d curves and nitros use a v for 3d.

rcnut ill never forget those nitro 3d v curves you shared thank you

i run govs on both my nitros

this might be a mighty dumb question do i need to run a 3d v curve for a nitro that has a gov ? my gov are programmed with a set rpm

sorry i am not a know it all as you can see or tell so i am not going to get upset about anyone's opinion

somethings make sense and some things dont i like to try and figure it out with help because there are a lot of know it alls on the internet that will have you screwed up guys that have been flying for years and years that you cant explain anything to if you know the type ?

Insha Allah made in america

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10-24-2014 05:09 PM  4 years agoPost 17
goof2

rrApprentice

Bristol,CT

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When you explain TH curves for Nitro, Electric, or gas be sure to also include pitch curves. They go hand and hand.

I don't change pitch curves in any flight mode some people do.

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10-24-2014 05:32 PM  4 years agoPost 18
wc_wickedclown (RIP)

rrProfessor

long beach calif

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goof2
When you explain TH curves for Nitro, Electric, or gas be sure to also include pitch curves. They go hand and hand.
I don't change pitch curves in any flight mode some people do.
most beginners and novice adjust there normal mode pitch curves
and will do thank you

and interesting i bet you have been flying for a lot of years to enjoy
those kind of normal mode curves impressive

i included these curves in my blog for 3d thank you
nitro curves without a gov

Idle 1.........................Idle 2
1 = 100%..................1 = 100%
2 = 85%....................2 = 95%
3 = 62%-65%...........3 = 74%
4 = 85%....................4 = 95%
5 = 100%..................5 = 100%

Insha Allah made in america

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10-24-2014 10:03 PM  4 years agoPost 19
dela

rrApprentice

Stillwater Oklahoma

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I mostly fly nitro, without a governor. I'm no super 3Der, but my proceedure is:

1. Leave the PITCH curve linear for all modes except throttle hold. Usually +- 10 or 11
2. I set the NORMAL throttle curve for CONSTANT HEAD SPEED from around quarter STICK to full stick (constant speed in climbouts and descents). Of course this takes some trial and error. Below quarter stick, I blend the points to a nice idle speed.
3. For IdleUPs, I form a (nearly) symmetric curvy V, using the same values from my Normal curve points from midstick to high stick. I aim for constant head speed above half stick for upright flying, and constant head speed below half stick for inverted flight. Of course, without a governor, I overspeed in fast descents.

Ron D.

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10-24-2014 11:13 PM  4 years agoPost 20
wc_wickedclown (RIP)

rrProfessor

long beach calif

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dela
I mostly fly nitro, without a governor. I'm no super 3Der, but my proceedure is:
1. Leave the PITCH curve linear for all modes except throttle hold. Usually +- 10 or 11
2. I set the NORMAL throttle curve for CONSTANT HEAD SPEED from around quarter STICK to full stick (constant speed in climbouts and descents). Of course this takes some trial and error. Below quarter stick, I blend the points to a nice idle speed.
3. For IdleUPs, I form a (nearly) symmetric curvy V, using the same values from my Normal curve points from midstick to high stick. I aim for constant head speed above half stick for upright flying, and constant head speed below half stick for inverted flight. Of course, without a governor, I overspeed in fast descents.
super well explained
how long have you been a pilot dela ?

Insha Allah made in america

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HomeAircraftHelicopterHelicopter Main Discussion › normal mode throttle curves for electric & nitro the differences discussion
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