Logo 600 SK720 Install Pics

[OnTheSnap]

Hey guys,
I just finished my Logo 600 build which includes the SK720. I moved the unit from my Trex 600 to the Logo. I thought I'd post some pics of the installation. The servo power box happens to fit perfectly in between the elevator servo and frame. So it makes for a very tidy installation.

The maiden went great, and the Logo 600 and SK720 are a fantastic match! Looking at the log data, the vibration levels are extremely low even during hard collective maneuvers.

[alvinchai]

Looking good

[okteister1]

Did you only use one satellite receiver? If so would this be enough?

[OnTheSnap]

Heck no! One is on the side and the other is horizontal in the back bottom.

[Misha]

So 430 bucks without LCD screen and witout governor right ?

[freeze]

Nice!!!

What are you running to power the SK720?

Also, what are your thoughts on skookum vs vbar?

thanks

[lperagallo]

Originally Posted by Misha

So 430 bucks without LCD screen and witout governor right ?

Misha,

It's $424.99 with free shipping in the US. And yes, no governor at this time.

Pretty nice deal when you compare its features to other units ON the market today.

Lou

[OnTheSnap]

I'm using a CC BEC pro feeding the skookum servo power bus. The BEC is tucked in in front of the motor behind the ESC.

Hi Misha. I'm a grumpy guy like you, so I understand where you are coming from.

LCD - You don't need one. Just plug the USB into your pc for setup. If you already have a laptop/netbook, the LCD is redundant.

Gov - This is something Skookum may eventually add. But I would be suprised if it was better then a Jive. Castle has been trying for years and their gov still isn't up gov's. We'll see.

What floats my boat is flight performance, logging which helps be trouble shoot and identify vibrations I can't see, bail out function, and eventually gps which improves the logging and opens up many more unique options.

[R0t0R]

The Governor function that most of us are talking about is for nitro helis. Don't think Skookum is talking about adding an ESC to the 720, but they have talked about a governor for nitro and gasser helis.

[OnTheSnap]

The TotalG and upcoming vBar gov both support electrics. Both likely use an external sensor for motor RPM. There is no reason why the 720 will differ.

The big advantage over a esc is that you ca precharge the motor for big collective changes.

[rickn816]

Originally Posted by OnTheSnap

Hey guys,
I just finished my Logo 600 build which includes the SK720. I moved the unit from my Trex 600 to the Logo. I thought I'd post some pics of the installation. The servo power box happens to fit perfectly in between the elevator servo and frame. So it makes for a very tidy installation.

The maiden went great, and the Logo 600 and SK720 are a fantastic match! Looking at the log data, the vibration levels are extremely low even during hard collective maneuvers.

Is that the bus in this picture? Forward of the 720?
Rick

[R0t0R]

Originally Posted by OnTheSnap

The TotalG and upcoming vBar gov both support electrics. Both likely use an external sensor for motor RPM. There is no reason why the 720 will differ.

The big advantage over a esc is that you ca precharge the motor for big collective changes.

I see what you are saying now. Thought you were talking about the 720 replacing the ESC. You would still need some kind of separate box to handle ESC functions as you can't put the the kind of amps and voltage through the 720 as you do with an ESC.

Guess what you are saying is using an external RPM sensor like we do on nitros, feeding that to the 720 and bypassing any gov function an ESC may have, thus using the ESC more like a throttle servo on a nitro. The 720 would thereby be doing pretty much the same thing in both electrics and fuel powered helis. The RPM pick-up would be different, but send the same kinds of inputs to the 720.

I fly large nitros, large electrics and small electrics and definitely agree with you about the advantages of the ESC or governor (on nitros) knowing what kind of load to expect from collective and cyclic inputs. I'm all for simplicity of set-ups. The more functions the 720 can take care of, reducing the number of separate boxes in all of my helis, the better!

Hopefully by the end of next week, I will have some pictures and flight reports for you guys of the 720 in my Velocity. Still a little undecided on if I'm setting it up with my AR7100R or satellites, the bus, separate governor, etc..

[OnTheSnap]

Originally Posted by rickn816

Is that the bus in this picture? Forward of the 720?
Rick

Yep.. Fits perfectly between the elevator and right frame. Quite snug though. The connectors overlap, but there is a 2mm gap, so there is no transfer of vibration.

R0T0R,
To be clear, there is no gov function now. This something that will be added in the future (hopefully). The TotalG already has it (not sure how well it works on electrics). And the vBar has announced it will be in the next update (this summer or fall?). Who knows how well either will work. But I'm hopeful.

[R0t0R]

Hey OnTheSnap, Yep, I've been following this for some time now and know there is no governor function currently. I had some inside info from long before the beta units came out that the governor function is something the 720 could be capable of in the future and that Art is considering it.

[jake28]

I like the way you plugged the connectors in like that to get signal only. I may have to try that myself.

[Misha]

Curtis J. Youngblood said:

The programming in the Total G for the gyro is very similar to the Mini G. And if you are running it with Spektrum you just need the satellite receivers. The number of them depends on the size machine.

And the governor actually works very well with electrics. I use it in my electric FAI machine and Nick is using it in his little Rave. It works better than most ESC governors we have tried.

Actually I still had some small tail twitch issues with even the "highest end" ESCs. The ATG or governor in the Total G gets rid of the twitches.

As for a lower cost unit without the governor, that is not how the electronics work. It would be the same basic unit,components wise, with or without the governor. So we would just be reducing your options without much cost savings.

The other point of the governor is we can use it for triggering the flight control to reduce takeoff issues and landing issues that gyros systems can tend to have.

To answer the question from earlier, yes you can turn off the governor if you choose to.

On the question of the tail kicking, honestly I am not sure why the ESC governors kick like they do, They seem to pulse the motor in such a way to cause small kicking, especially noticeable in the hover with the tail pointing towards you. Running our governor gets rid of this issue. I am certainly not saying all ESC governors are bad, there are ones out there that work well. People simply have the option to use the Total G governor in both Nitro or Electric if they want to.

If you are using the governor in your ESC, during setup of the Total G simply choose "Off" for the governor on the Total G.

[OnTheSnap]

Very exciting indeed! Art, are you listening?

[rickn816]

Originally Posted by Misha

Curtis J. Youngblood said:

The programming in the Total G for the gyro is very similar to the Mini G. And if you are running it with Spektrum you just need the satellite receivers. The number of them depends on the size machine.

And the governor actually works very well with electrics. I use it in my electric FAI machine and Nick is using it in his little Rave. It works better than most ESC governors we have tried.

Actually I still had some small tail twitch issues with even the "highest end" ESCs. The ATG or governor in the Total G gets rid of the twitches.

As for a lower cost unit without the governor, that is not how the electronics work. It would be the same basic unit,components wise, with or without the governor. So we would just be reducing your options without much cost savings.

The other point of the governor is we can use it for triggering the flight control to reduce takeoff issues and landing issues that gyros systems can tend to have.

To answer the question from earlier, yes you can turn off the governor if you choose to.

On the question of the tail kicking, honestly I am not sure why the ESC governors kick like they do, They seem to pulse the motor in such a way to cause small kicking, especially noticeable in the hover with the tail pointing towards you. Running our governor gets rid of this issue. I am certainly not saying all ESC governors are bad, there are ones out there that work well. People simply have the option to use the Total G governor in both Nitro or Electric if they want to.

If you are using the governor in your ESC, during setup of the Total G simply choose "Off" for the governor on the Total G.

Thanks, Misha.

Rick

[MrMel]

@OnTheSnap

Is it Radix blades you run on yours L600? regular?
What tailblades & tailblade size do you run? (95 or 105's?)

[OnTheSnap]

Originally Posted by MrMel

@OnTheSnap

Is it Radix blades you run on yours L600? regular?
What tailblades & tailblade size do you run? (95 or 105's?)

Hi MrMel,
I'm running the standard Radix blades and Edge 95mm tail blades.