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HelicopterMain Discussion › Excessive Head Speed at Mid Stick
08-27-2012 02:26 PM  5 years agoPost 1
gttahoe

rrNovice

Cambria Heights, NY

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I've updated my ESC to a Castle 80HV and I'm using a stock Align motor 1220 kV & Castle Pro BEC. My ESC was programmed via the Castle software in addition it was advised to set your pitch at 30 -75 -100. Now I'm encountering my head speed to be much higher as I approach mid stick when spooling up. Once I've passed mid stick my head speed decreases significantly. Does that have anything to do with the throttle curve? Please advise.

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08-27-2012 02:57 PM  5 years agoPost 2
mr dan

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Stockton Calif

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I've updated my ESC to a Castle 80HV and I'm using a stock Align motor 1220 kV & Castle Pro BEC. My ESC was programmed via the Castle software in addition it was advised to set your pitch at 30 -75 -100. Now I'm encountering my head speed to be much higher as I approach mid stick when spooling up. Once I've passed mid stick my head speed decreases significantly. Does that have anything to do with the throttle curve? Please advise.
What does your Throttle curve look like and have you calibrated your ESC's throttle end points ?

"R.I.P Roman" Citizen 0094 in the Nation

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08-27-2012 03:09 PM  5 years agoPost 3
McKrackin

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Lucasville,Ohio

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I'd say your throttle curve is higher in the middle than your governed speed.

Lower the center of the curve.

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08-27-2012 03:38 PM  5 years agoPost 4
gttahoe

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Cambria Heights, NY

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Is the calibration done via the computer?

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08-27-2012 03:43 PM  5 years agoPost 5
McKrackin

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Lucasville,Ohio

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No.
You power up your radio.
Set the throttle to 100%

Now power up the ESC.
Then drop the throttle to 0% after the beeps.

That shows the ESC the throttle end points.

Take your blades off just in case.lol....

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08-27-2012 05:09 PM  5 years agoPost 6
gttahoe

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Cambria Heights, NY

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Bravo

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08-27-2012 05:22 PM  5 years agoPost 7
mr dan

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Stockton Calif

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To calibrate a Castle ESC you need to do the following:
Go into your end points menu and select the throttle , lower both High and low end points to about 25%, now make sure your throttle curve is linear 0% to 100%, now set your throttle stick to the top, high lite the upper end point. now power the ESC , raise the end point until you get a beep, raise it about two or three more points , then drop the throttle and raise the lower end point until you hear a beep again, now you are ready and your ESC is calibrated to your TX.
When doing this, make certain you have the pinion removed or the mesh between the pinion and main gear separated.

"R.I.P Roman" Citizen 0094 in the Nation

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08-27-2012 05:24 PM  5 years agoPost 8
mr dan

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Stockton Calif

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Here ya go:

Watch at YouTube

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08-27-2012 05:39 PM  5 years agoPost 9
McKrackin

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Lucasville,Ohio

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Eeewww...Forgot the end point adjustment part.

I literally never use the word literally right.

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08-28-2012 02:55 PM  5 years agoPost 10
gttahoe

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Cambria Heights, NY

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Thanks guys that vid helped and everything now works like a charm.........

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08-29-2012 04:14 PM  5 years agoPost 11
gttahoe

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Cambria Heights, NY

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Now my Heli responds fine but my Head Speed I think is too low can it be increased via my Throttle curve aor via the castle link?

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08-30-2012 07:22 AM  5 years agoPost 12
mr dan

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Stockton Calif

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Describe your setup, we know the motor, what heli is this on, main gear tooth count, pinion size, lipo used, (mAh, number of cells and discharge rate) What is your target head speed you are looking for? are you wanting to have the HS governed?

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08-30-2012 01:42 PM  5 years agoPost 13
gttahoe

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Cambria Heights, NY

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Current Setup:
Hex55: 85
Brake Delay: .6 sec (Delayed) (*)
Brake Ramp: Immediate (*)
Motor Start Power: 59
Direction: Forward (*)
Brake Strength: 0
Current Limiting: Disabled
Power-On Beep: Enabled (*)
Motor Timing: 5
Data Log Enabled: 255
Vehicle Type: Helicopter
Throttle Type: Governor Mode
Throttle Response: 5
Governor Gain: 25
Initial Spool-Up Rate: 5
Head Speed Change Rate: 5
Auto Rotate Enabled: True
Governor Mode Type: Simple
Vehicle Setup - Battery Type: LiPo
Vehicle Setup - Number of Cells: 6
Vehicle Setup - Battery Voltage: 22.2000
Vehicle Setup - Gear Ratio: 10.625
Vehicle Setup - Motor Kv: 1220
Vehicle Setup - Motor Number of Poles: 6
Desired Head Speed 1: Optional
Desired Head Speed 2: Optional
Desired Head Speed 3: Optional
PWM Rate: 12 Khz (*)
Sample Frequency: 1 Sample / Sec (*)
Cutoff Voltage: Auto Li-Po (*)
Auto-Lipo Volts/Cell: 3.4 Volts/Cell
Voltage Cutoff Type: Soft Cutoff (*)
Current Cutoff Type: Soft Cutoff (*)
Link Live Enable: Disabled (*)

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08-30-2012 03:04 PM  5 years agoPost 14
mr dan

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Stockton Calif

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With a heli, you never want Brake active. You need to disable that. If you are using the Castle ESC, go into the Castle link program and select governor mode, then select "set rpm" Enter your motor's information when asked pinion, and main gear tooth count.

Looking at the castle link with the info you provided,and set to governor mode (set rpms) you can get 2100 rpm's and be running at 91.5% efficiency, F/M 1 , 2150 @ 93.7% efficiency F/M 2 and 2175 @ 94.8% efficiency F/M 3
(F/M = Flight Modes) Stunt 1 , 2 & 3

"R.I.P Roman" Citizen 0094 in the Nation

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08-30-2012 03:29 PM  5 years agoPost 15
dkshema

rrMaster

Cedar Rapids, IA

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With Castle stuff, selecting the Heli throttle type automatically disables the brake. Since he's already chosen:
Vehicle Type: Helicopter
Throttle Type: Governor Mode
the brake, by default, will be off.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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08-30-2012 03:34 PM  5 years agoPost 16
mr dan

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Stockton Calif

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Ah yes you are correct! I read his reply incorrectly.. sorry about that.

"R.I.P Roman" Citizen 0094 in the Nation

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HelicopterMain Discussion › Excessive Head Speed at Mid Stick
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