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Gas Powered Thoughts Advice for Gas Helicopter Success from Carey Shurley |
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04-05-2011, 08:27 PM | #1 (permalink) |
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Futaba CGY750 Compatibility Requirements
I was asked to discuss what are the system prerequisites needed to use the Futaba CGY750 gyro controller.
this is not a step by step setup, it is only about what you need to have to use the controller While this isnt strictly a gas helicopter question, it applies equally so here goes In what configurations is the controller available?
Hobbico is currently bringing in only the gyro/governor sets (no rx) in the US. Other geographies may offer the other configurations Details about the controller The CGY750 control unit has 3 input slots and 5 output slots the ONLY input slots on the controller are:
The outputs on the controller are:
The complete list of channel signals accepted from the transmitter are as follows. They are not in channel order and I have grouped them for discussion purposes only: Base Functions
How does the controller receive the input signals? The connection between the rx and the controller is one wire! All of the servos plug into the cgy750. I would suggest that you plug the power connections into the controller using Y connectors and let the SBus cable power the rx or you could connect a power lead to both units. It will also work by just connecting power to the rx but the full servo load would then run across the single SBus wire. The CGY750 contains an SBus configuration menu where you set which TX channels map to the various functions So currently the CGY750 requires an SBus signal to be used otherwise you can't get the control signals in. As of this writing only Futaba is providing compatible SBus receivers so as of now you will HAVE to use one of these three:
Also if you're using high voltages you'll want to put some sort of regulator in the output path to the Rudder servo to keep the voltage close to 5 volts. This is no different than with any other rudder/gyro setup. What about other system manufacturers A little later in 2011 Futaba should have a Pulse Width Modulation converter to be used with competitors receivers. It will most likely have several input connectors and one SBus output connector and may not support ALL of the extended features. No idea when or how much. What Futaba transmitter do I need to make this work? to use all of the cgy750 features that can be driven from the transmitter, you'll need 10 channels one of which can be on/off only. The absolute minimum is 5 as It is possible to use the device with only the base functions. The extended features wouldn't be available and would operate as follows:
The 12 and 14 channel transmitters also have s/w upgrades that support the 750 features directly. You can also use the 10CHG transmitter but you'll have to have one of the listed SBus receivers and since the software isn't configured for the 750 you'll either have to set the ele/ail gyro gains directly in the controller or setup separate mixed channels to remotely control them. But it will certainly still work. What Servos are Supported
What Governor sensors are supported
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Carey Shurley Proprietor - Gas Powered Helicopters Last edited by carey shurley; 04-06-2011 at 10:47 AM.. |
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04-08-2011, 06:17 PM | #2 (permalink) |
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Carey, your analysis is complete. It is clear that it will get the most from
Thanks for your important comments. |
04-08-2011, 09:03 PM | #3 (permalink) |
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this is Futaba's first entry into the FBL market and from the early feedback they've done it like everything else they do, they don't release it until it works as well or better than anything else available
If you combine the 750 controller with the new R6203SB receiver its a very compact package. That rx is very small, there are NO satellites needed and only one wire between the rx and the controller. Everything else plugs into the controller. since the s/w in the controller can be user upgraded (with the CIU/2 interface) whatever the next revision that Futaba decides to make can be loaded both into the tx as well as this controller.
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04-24-2012, 03:47 PM | #4 (permalink) |
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HiTecRCD - Aurora 9 Tx and Optima 9 Rx
FYI to any interested -
I have successfully setup a HiTecRCD system for use with the CGY-750 which will be used on a Whiplash Gasser as soon as it becomes available (I mean the very SECOND it becomes available ). Using the SBE-1 encoder to enable use of the CGY-750 also provided FULL functionality of its features, to include Aileron and Elevator gain adjustment from the Tx; and selection from Norm/AVCS/& Throttle Hold in all flight conditions that I setup. Although I don't have the model yet, the good thing about the CGY-750 and A9 is that all settings can be verified via digital displays. This includes the governor settings in all flight conditions. My setup includes the following:
I am running the battery to the regulator via a deans connection. Two leads provide power to the CGY-750 via the regulator. The CGY-750 provides power to the servos via the SBus connector which goes to the SBE-1 encoder. The SBE-1 has 10 leads, 2 of which provide power to the Rx. Leads 1 through 9 are used and are numbered exactly as the default channels are laid out on the Optima 9 Rx. I have a secondary on/off switch (JRPA001 Gold Deluxe) which plugs into a standard servo type connector from another direct battery lead. On the switched side of the on/off switch I have a Y connector which supplies switched power to the Stator Gator, and directly to the Rx's SPC port. The SPC port supplies power to the Rx ONLY (seperate from the servos). This also provides me real time Rx pack voltage telemetry directly on to the Tx display.
Please remember that the setup file I have is NOT trimmed out yet as the model I will be installing everything in is not yet released as of posting this message. All works well on the bench though, in terms of the "features" of the CGY-750 which is the only reason why I thought all of this may be useful (on this particular thread) to anyone who may have been in the same situation as me prior to working through everything... Which was - Will the SBE-1 give me the functions I want out of the CGY-750 with my radio package? I am pleased to say - Yes it does! Last edited by Seasick78; 04-28-2012 at 08:59 PM.. |
06-11-2017, 02:55 PM | #5 (permalink) |
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I have a buddy who purchased a used Trex 600 heli that came equipped with a CGY750 FBL system and a R6303SB RX. He mistakenly bought a Futaba T6J TX not knowing the it was S-FHSS and that it the R6303 is FASST. Now he has to purchase a new RX. Will the R2008SB RX link up with the CGY750? I am completely unfamiliar with the Futaba system.
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06-12-2017, 09:51 AM | #6 (permalink) |
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the R2008SB is a full range (not ground or short range) rx, that supports HV and SBus. Should be no problems linking
the Tx CONTROL of its functions will be limited to what the Tx software will support however the 750 can be fully programmed via its controller make sure he downloads and installs he latest 2.x firmware for the 750
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Carey Shurley Proprietor - Gas Powered Helicopters |
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