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HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsFutaba CGY › How to calibrate Govenor RPM with TX RPM
04-18-2011 11:22 AM  7 years agoPost 1
Knud Pedersen

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Denmark - Europe

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Hi

Anybody now how to calibrate CGY govenor RPM with TX rpm?

In my 14mz, when using the RPM mode 2100, and cant get the RPM higher then 2100. The CGY shows the same RPM as the TX.
BUT when changing to 2500 RPM mode in the tx, the CGY sont show the same RPM as the TX.

ChopperKnud
Team Miniature Aircraft
ThePitchbrothers

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04-18-2011 01:17 PM  7 years agoPost 2
kcordell

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O Fallon, MO

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Sometimes you have to for lack of better wording 'recalibrate' the entire system. Reset the S.Bus to default settings. Set up one at 2500, one at 1500 and one at 0 rpm in the TX. Then when you turn the S.Bus back on, your RPM settings should show those 3 settings. Then set the rpm's at whatever you want and you should be set. I had to do this once with both the 14 and 8FG. If this doesn't get you exactly back to even, I'll have to find the PM I sent to guy about how to do this.

Team Synergy/Rail, Team Scorpion, YS Engines, VelTye

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04-18-2011 02:56 PM  7 years agoPost 3
BrainDrain_dx

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Wichita KS

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I spent more time on this than anything else and was unsuccessful at getting them to sync. Really need detailed instruction on how to do this.
I'm using an 8fg

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04-18-2011 06:39 PM  7 years agoPost 4
Wyorcflyer

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Cheyenne, Wyoming USA

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The trick in Gov calibration seems to be to make sure the transmitter is set to the three separate ranges so that when you flip the switch on the TX the CGY750 shows 1 then 2 then 3 in the display top right corner so you know you are setting each range.

I used the numbers on p70 of the manual 1100, 1500 and 1850 in the TX. With those settings in the TX, the CGY750 showed 1, 2, and then 3 in the top right corner when I flipped the switch but the RPM values in the CGY750 did not match the TX RPM values.

Then move the switch on the TX to the 1100 RPM setting and press the + - on the CGY 750 to match 1100. Flip the switch on the TX so that the TX is sending 1500 RPM and reset the CGY750 to match 1500. Same for position 3 on the TX and 1850 on the CGY750.

After that calibaraion should be complete. The CGY750 should then show exactly what you set in the TX.

The only oddity to this result was that I run 1800, 2000 and 2150 so with my TX so set, the display on the CGY750 always shows 3 in the top right because I am in the upper range on all three.

Hope that works for you.

Jack

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04-18-2011 06:40 PM  7 years agoPost 5
Knud Pedersen

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Denmark - Europe

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well i think i might got it.

I change my rpm mode im my 14mz to 2500.

Then in the CGY Gov.basic RPMset menu (page 70), i pushed the +/- until the CGY shows the same rpm as the 14mz.

After that i change the rpm in the 14mz to the rpm i want to run in norm, idleup1+2, and now the CGY shows the same rpm's

Im not sure way it only stays in RPMSset3...and if it matters...

ChopperKnud
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ThePitchbrothers

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04-18-2011 06:45 PM  7 years agoPost 6
Knud Pedersen

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Denmark - Europe

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Im not sure way it only stays in RPMSset3...and if it matters...
AH THATS WAY:
The only oddity to this result was that I run 1800, 2000 and 2150 so with my TX so set, the display on the CGY750 always shows 3 in the top right because I am in the upper range on all three.

ChopperKnud
Team Miniature Aircraft
ThePitchbrothers

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04-18-2011 07:05 PM  7 years agoPost 7
bkervaski

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Birmingham, AL, USA

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@BrainDrain,

It's super simple with the 8FG, just go to your normal mode with your TX, then go to the RPM view on the CGY750 and just adjust the shown RPM (with the +/- buttons) to the RPM you set in your radio and you're done, the other modes will now fall right into place.

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04-18-2011 08:54 PM  7 years agoPost 8
Knud Pedersen

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Denmark - Europe

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It's super simple with the 8FG, just go to your normal mode with your TX, then go to the RPM view on the CGY750 and just adjust the shown RPM (with the +/- buttons) to the RPM you set in your radio and you're done, the other modes will now fall right into place.
I just double checked, it is the same with the 14mz.
You only have to calibrate one rpm, and then the rest will fall right into place.
i just calibrate the 2500 rpm, and the whole range match perfect afterwards, (from 1000 to 2700 rpm)

ChopperKnud
Team Miniature Aircraft
ThePitchbrothers

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04-18-2011 09:44 PM  7 years agoPost 9
BrainDrain_dx

rrKey Veteran

Wichita KS

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you guys are crazy...
after converting from % to rpm I had
8fg - 1330 750 - 1335
8fg - 1665 750 - 1460
8fg - 1930 750 - 1760

then I moved the 8fg in normal to 1700 and synced the 750

8fg - 1700 750 - 1700
8fg - 1850 750 - 1725
8fg - 1930 750 - 1738

I finally solved the issue though...

I was going in normal, setting 1700 and syncing 750 to 1700 and none of my other points matched. I got everything to work by going in idleup2 1930, setting the 750 to 1930 then and only then did the other point match exactly. Setting the 750 while in normal or idle1 led to all kinds of issues.

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04-18-2011 10:27 PM  7 years agoPost 10
Wyorcflyer

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Cheyenne, Wyoming USA

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BrainDrain
I got everything to work by going in idleup2 1930, setting the 750 to 1930 then and only then did the other point match exactly. Setting the 750 while in normal or idle1 led to all kinds of issues.
I don't think the idle up position matters, it is the RPM range you are in on the CGY750 that matters. There are 3 ranges on the CGY 750 and all three should probably be calibrated even though it might not matter if all your settings are in the high range. See my post above as to the range numbers in the top right corner of the CGY750 display and look at the picture on page 70 of the manual. You need to set all three ranges in the 750 by sending information from the TX in each range to be fully calibrated.

When you were in normal at 1700 you calibrated range 2 on the CGY750. That is why the range 2 value was correct but range 3 did not match(1850=1725) because you had not yet calibrated range 3 and 1850 is in range 3. Then you went to idle 2 with an RPM in your TX of 1930 which is range 3 on the CGY750. When you set 1930 on the GY750 that calibrated range 3. You therefore now have range 2 and 3 set.

It would be interesting to have you set the RPM in the TX to 1100 and see what the CGY750 shows. Since it does not appear from what you posted that you have calibrated range 1 I would suspect that it will not match.

I think we are making this more complex than it really is. I will try it tonight but if you simply dial 1100 on TX, regarless of condition or RPM switch setting, and punch that into the 750, then dial 1500 on TX and punch that in the 750 then 1850 on TX and punch that into the 750, I think you will be done. I don't think the condition swithes and RPM swithings are related to calibration which I would presume is a group function.

Jack

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04-18-2011 11:53 PM  7 years agoPost 11
Kevin Dalrymple

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Indianapolis

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It is real simple, first go to the gov screen. push the 2000 rpm button, adjust the 750 to read 2000. [ush the 1500 rpm button, adjust the 750 to read 1500. push the 1000 button, adjust the 750 to read 1000. Now dial in the rpm you want for all your flight modes and what it says on the 14mz is what the 750 will read. See page 120 in the 14MZ manual. This is just like the GV-1 and 701. Hope this helps.

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04-19-2011 03:24 PM  7 years agoPost 12
ChrisK7

rrApprentice

Stanfield, Ore. 97875

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I've been wanting to ask this question about the GV-1 gov matching to my FG12.
Anyone know if it is the same for the GV 1 gov.?

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04-19-2011 03:47 PM  7 years agoPost 13
Kevin Dalrymple

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Indianapolis

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Yup.

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