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HomeRC & Power✈️Aircraft🚁Helicoptere-Electric Motors-Controllers-ESCOther › Is It OK to Throttle Calibrate in Gov Set RPM Mode
08-05-2012 04:34 AM  9 years ago
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area51

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Rohnert Park, CA

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Is It OK to Throttle Calibrate in Gov Set RPM Mode
Hi Guys,

Do I need to make sure my Ice 120HV is in fixed end point mode before I do the throttle calibration or can I calibrate while it is in gov set rpm mode?

It is a brand new esc and I hooked it up to my Castlelink and programmed everything the way I want including gov set rpm mode but did not do the throttle calibration yet. Must I put it back to fixed end points first or can I leave it as is before calibrating the throttle?

Thanks!
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08-05-2012 06:08 PM  9 years ago
flyride

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Salt Lake City UT

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I never calibrate in fixed endpoint and it has always worked great for me. I would be interested to know if it works better if calibrated in fixed endpoints as opposed to set rpm and why.and the blonde said "RECTUM, Hell damn near killed em!!"
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08-05-2012 06:33 PM  9 years ago
rexxigpilot

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Yes, you have to be in fixed endpoint mode to do the throttle channel calibration. After the calibration switch the ESC to Set RPM governor mode.

I always calibrate my ESC and throttle. It may not be needed if using Set RPM, but not doing so may affect the throttle output values used to select the 3 speed settings. IOW, you may think you selected idle-up 1 when in fact you are in idle-up 2 because the pulse width is too high without calibration.
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08-08-2012 08:57 AM  9 years ago
RS Rogers

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Clyde NC

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The esc needs to be in what ever mode (fixed, gov, autorotation enabled or disabled) you plan on flying. The calibration may be different depending on the mode your in.
Once in the chosen mode just make sure you have a linear curve in the flight mode your using to calibrate - in reality all you need is a 0 on the lowest point & 100 on the highest as you are only calibrating the Tx at low & full stick position.

Steve
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08-08-2012 01:08 PM  9 years ago
dkshema

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Cedar Rapids, IA

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From Castle Creations:
Setting Up Set RPM Governor Mode

By setting up this feature on your Castle Creations ESC you will
be able to maintain a good constant head speed throughout the
duration of your flight.

*For this function to work properly the throttle channel of your
Tx must be calibrated in accordance to the “Setting Up Fixed
Endpoint” Instructions.
-----
The esc needs to be in what ever mode (fixed, gov, autorotation enabled or disabled) you plan on flying. The calibration may be different depending on the mode your in.
Baloney. No matter WHAT flight mode your transmitter is set to operate, the throttle channel will always have the same overall pulse width. Calibration simply lets the ESC know what full low throttle and full throttle pulse widths are out of your transmitter. The range is nominally 1 to 2 milliseconds with neutral at 1.5 msec wide.

Calibrate in FIXED ENDPOINT mode BEFORE going into governor mode.

-----

Flyride -- Once calibrated you should be able to get predictable, repeatable results. The whole procedure takes about a minute of your life.
-----
Dave

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

Team Heliproz
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08-08-2012 03:52 PM  9 years ago
RS Rogers

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Clyde NC

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Dave,
This has nothing to do with the flight mode of the Tx.

When I wrote the instructions (2 years ago maybe??) you make reference to there was a very wide range the frimware was looking for between Fixed Endpoints & Gov mode.

Yes with the newer firmware the calibration numbers will be very close to the same whether you have gov or fixed endpoints chosen in the esc (nothing to do with the Tx here) so it may not matter which you calibrate in.
Note the section of my instructions you refer to state For the Function to work properly - "Calibrate in accordance to the Setting up Fixed Endpoint Instructions - Not in Fixed endpoints - but according to those instructions. This could be misleading I guess.

I do need to go back & update those at some point in time but back then a calibration in fixed endpoint mode would result in a throttle value of say 60% or so - close to that in Airplane mode but a calibration in gov mode would result in say 110 - 115% (below 1.0ms Cant remember now) so if you calibrated in Fixed & then went to gov the esc wouldnt arm. Enable the Autorotation feature & it changed again.

It may not matter now BUT it is always best to put the esc in the mode you plan on running & then do the calibration "In Accordance" to the instructions - And calibrate every time you change firmware version.

Those instructions were wrote when we were finding the right amount of pulse range for the Auto Rotation feature to work consistently with all Tx's.

Hope this clears things up & is the bread to your Bologna LOL

Steve
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08-08-2012 07:18 PM  9 years ago
rexxigpilot

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Steve, that is confusing language. I interpreted it the same as Dave did. The calibration section on the CC website should be rewritten ASAP to avoid possible mishap.
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08-08-2012 07:31 PM  9 years ago
RS Rogers

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Clyde NC

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We will be doing this very soon - shortly after IRCHA I'm sure.
Some of the new instructions may include set up for the Vbar Gov

Thing is, if your using newer firmware the calibration I believe will be the same in Fixed or Gov and the same in both when the autorotation feature is enabled.

Example (using a JR9303)
Fixed w/o Autorotation = 82% on the low
Fixed w/ Autorotation = 118%

Gov w/o Autorotation = 82%
Gov w/ Autorotation = 118%

The High throttle should be the same across the board which was 98% for me

This is on version 4.01 FW

Steve
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08-08-2012 10:15 PM  9 years ago
dkshema

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Cedar Rapids, IA

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Bologna LOL
I guess I should have used a less offensive food...

It appears that with all the revisions of CC firmware, the calibration stuff has migrated to the point where it no longer matters where the calibration is performed. I think we agree that it has to be done, however.
-----
Dave

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

Team Heliproz
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08-09-2012 06:44 AM  9 years ago
jadams

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East coast USA

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My numbers are the same in both modes... Now if cc would just work on the gov.....
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11-14-2012 02:46 AM  8 years ago
bigbadflyer

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Middle Earth New Zealand

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Question, after clicking enable auto-rotation and trying to set end points I have to extend my travel limit on my Futaba tx to 148% and my limit to 140% for it to start beeping on low stick. Is this normal?? travel limits are now 118% high and 140% low. With out auto-rotation clicked they are much lower. Im more concerned about having to increase the limit so as I could increase the travel to get it to responded. Im concerned....New Zealand Helicopter Sheep Hearding Champion :-)
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11-14-2012 08:02 PM  8 years ago
RS Rogers

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Clyde NC

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Yes - that is normal.
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11-14-2012 08:10 PM  8 years ago
bigbadflyer

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Middle Earth New Zealand

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Oki Doki then. Thanks for confirming. I'll give it a whirl New Zealand Helicopter Sheep Hearding Champion :-)
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