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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › 14sg RPM telemetry and CGY750 governor
04-27-2013 02:08 PM  5 years agoPost 1
GScott

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Lewis Center, OH

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Is anyone using the CGY750 and RPM telemetry at the same time? They both use the same sensor but you can really only have one installed. I'm using a YS60 so the Futaba back plate sensor is not an option. How can I have the telemetry and governor at the same time?

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04-29-2013 01:16 PM  5 years agoPost 2
Dr.Ben

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Richmond, VA, USA

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I have a vision of using one sensor and then making up a Y to feed both ports, but do not do this until I can get an answer from Japan.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-02-2013 03:41 AM  5 years agoPost 3
GScott

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Lewis Center, OH

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Any update from Futaba? I had the same idea about using some type of y adaptor.

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05-02-2013 04:30 AM  5 years agoPost 4
Dr.Ben

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Richmond, VA, USA

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As soon as I get the word back from JP,
I will let you know.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-02-2013 01:40 PM  5 years agoPost 5
Four Stroker

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Atlanta

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Hmmmm...interesting. You are saying the Revolution Sensor that comes with the CGY750 is the same as comes with the SBS-01RM telemetry sensor. It looks like just a coil terminated in a connector. So you want to Y the coil to both the SBus2 thing and the CGY750 ? Assuming they have the same polarity - say black lead of coil grounded - and the input is high impedance, it might work. But if it is intermittant, it would be a bad thing. I would wait for Ben to hear from Japan !

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05-02-2013 04:37 PM  5 years agoPost 6
GScott

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Lewis Center, OH

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The sensors are definately the same and have the same polarity. I actually used the one that came with the telemetry because the cable was longer. It's currently only connected to the 750 operating the governor.

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05-03-2013 02:37 AM  5 years agoPost 7
Dr.Ben

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Richmond, VA, USA

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JP has the email. I should have an answer in a day or so.

Ben

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-06-2013 02:26 AM  5 years agoPost 8
Dr.Ben

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Richmond, VA, USA

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Well, I got an answer, but it got lost a bit in the translation. The question is being reposed.
I should have a re-reply in a day a so.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-08-2013 12:28 AM  5 years agoPost 9
filou406

rrApprentice

Lexington SC US

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It is completely crazy that through sbus2 Futaba is not able to use just one sensor for governor and telemetry at the same time. The Rpm information should be used for both. Futaba is less and less impressive in his ability to innovate!!!! It is sad, it is like the option to record the telemetry data, it was a dream, the competitors did it, but Futaba just showed an ad about it. Far behind...

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05-08-2013 02:34 AM  5 years agoPost 10
Dr.Ben

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Richmond, VA, USA

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If you feel as though the "the competition" offers so much more of a comprehensive and technologically advanced and reliable combination of hardware and radio link combined with telemetry, by all means partake of their product. The market is free for you to purchase what you wish; fly what makes you happy and gripe the least. The OP asked a question for which I will have an answer shortly. I fail to see any constructive purpose in the context of the original post for your hijack of this thread. Tanaka-san, who designed the 18MZ, will provide the answer to the OP's query as soon as possible. I will defer to his word rather than make an unsubstantiated reply lacking the facts that can only be derived from a design engineer based understanding of FASSTest.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-08-2013 03:15 AM  5 years agoPost 11
filou406

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Lexington SC US

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I bought my T18 at the very beginnig when the Futaba ad was still explaining the option to record the data. Since this time the ad has been changed...
However I accept that this radio is well done, comfortable to program nice to play with, but on your side, please accept the fact that a lot could be done to improve the features.
And to be completely honest, I follow this post with interest since I have the same question (with the other RPM sensor) and since I understood that the option to read the RPM through the GY701 was just a dream.
Thank you for the answer you will get, and if you have the opportunity to chat with the T18 designer, please give him the idea to use the sbus2 of the GY701 to send the RPM info to the telemetry (it should be easy to program and much more elegant than a Y cord)

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05-08-2013 02:11 PM  5 years agoPost 12
Four Stroker

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Atlanta

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Futaba is the only PREMIUM radio available. I define that as having SPLINE curves. My main objection to Futaba telemetry is the hole between $500 and $3000. JR was neck to neck with Futaba until Paul Beard did to them what Jim Drew did to Graupner. I had high hopes for the euro trash radio but have given up after reading the FCC report.

But this thread was a very specific question with a possible solution.

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05-08-2013 06:51 PM  5 years agoPost 13
trondch

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Mjoendalen,Norway

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[quote]Is anyone using the CGY750 and RPM telemetry at the same time? They both use the same sensor but you can really only have one installed. I'm using a YS60 so the Futaba back plate sensor is not an option. How can I have the telemetry and governor at the same time?
I have been using this setup with the 701 gyro/gov for some time now.Using either the sensor from the 701 or the sensor that is specific for telemetry, connected to both the gov and telemetry with an Y-cable.Looks to me as these sensors is identical.That way I can monitor the RPM of my OS GT15Hz and still have the governor function.

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05-08-2013 11:43 PM  5 years agoPost 14
Four Stroker

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Atlanta

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Oddly enough, we have a look inside from this thread.

https://rc.runryder.com/t735037p1/

There is a little circuit board in there and presumably the output pulse is actually a voltage so that it can go to two devices assuming they are low impedance.

Ben will get the recommended solution from Japan for us.

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05-09-2013 12:37 AM  5 years agoPost 15
Dr.Ben

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Richmond, VA, USA

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I just sent a folow up email to my follow up. As we found out during CGY750 testing, there ends up being a 36+ hour lag to get replies turned around because by the time they see email over there and have to to compose the reply. A full day has sometimes passed over here, and then we often don't see it until another day still because it hits our email in the wee hours of the morning.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-09-2013 02:37 AM  5 years agoPost 16
f2000ez

rrApprentice

Warrenton, VA

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Dr Ben is trying to help us out and answer our questions .Give him time to hear the response from Japan.

Dave

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05-09-2013 01:27 PM  5 years agoPost 17
GScott

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Lewis Center, OH

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Agreed. As always Dr. Ben is going the extra mile to get us information directly from the engineers at Futaba.

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05-09-2013 09:32 PM  5 years agoPost 18
knightofcarnage

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chicago

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my question can futaba make cgy750 an sbus2 gyro with just a firmware update and expose some variables like RPM ,ANG Rate etc to the TX.

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05-10-2013 03:17 AM  5 years agoPost 19
Dr.Ben

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Richmond, VA, USA

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Guys,

Below is the wiring diagram from Tanaka-san, the design engineer for the 18MZ and FASSTest.

The principle concept that must be understood is that no voltage can be applied to the 750's sensor port. Since the SBus2 line out of the receiver feeds voltage, the feed back to the 750 must be isolated in the pictured fashion. Tanaka-san said to take special note of the removal of the voltage lead from the S.Bus hub.

To my knowledge, there is more to SBus2 than firmware, so the current 750's will not be updateable for that facility. Future gyros will undoubtably be S.Bus2 capable. Before some of you drive a stake into Futaba for not having S.Bus2 capability in the 750 and 701, please remember that those products were designed and implemented well before S.Bus2 was developed and put in production.
It takes a while to get new technology saturated completely through the product line.

I hope this helps.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-10-2013 04:57 AM  5 years agoPost 20
filou406

rrApprentice

Lexington SC US

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Thanks for this picture. I have 2 questions for you:
* need to remove only the red wire or also te black one ?
* does this work with the backplate sensor ?

Thanks

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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › 14sg RPM telemetry and CGY750 governor
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