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Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 9:57:08
by ZeXx86
Dawiev: Unfortunately there is nothing easier, actually you are only limited if RPM is preconfigured and requires always computer to change it.
Governor Settings are very, very similar to those from V-Bar.

Scott H: If you will figure out how it works, then it is very easy to set the range.
It is only important to know, that Min. parameter behaves similarly to the Subtrim (Throttle Channel) in your transmitter.
Max. is just upper limiter for the throttle, but it does not change channel data in any way, it just determine, where to cut it.

So when you disable governor, you should be able to reach the lowest and the highest servo positions.

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 10:05:25
by Dawiev
It was actually an "iconic" reference on my part ........... :twisted:

Won't do it again !

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 19:51:27
by Scott H
Well I had a chance to fly today, 36 degrees and overcast, before the day and a half of rain.

With cold fingers I put the heli up into the sky and normal to idle up 1 and the rpms did not climb immediately to full rpm instead they climbed to what I thought would be 1400rpms at least by sound. No verification of the actual rpms as the radio connection is UDI.

So it worked. It looks as though in my case the min/max throws were off and once adjusted the gov seems to not race to infinity (and beyond).

My power setting was on 3 and holding set to 1 so the engine didn't maintain power or hold the rpms at all, but it's a starting point. Now I can tune the gov on subsequent flights and report back on how well it's working.

I'm glad I've now got this going, still the simple instructions Zex aren't as simple as you'd like to believe. Give these instructions to someone and don't prompt them when they get stuck and you'll see what doesn't make sense.

I'll report back once I tune the gov. Will likely change back to ExBUS so I can tune on the fly (well land, tune and fly).

Thanks Zex for pointing to the the min/max servo throw.

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 20:00:00
by Malc1
Sounds promising then.
Especially with the one value set at 1 which I haven't managed to try out yet.

With the governor off do you get a full throttle throw from shut down to wide open at 0 and 100% or did you have to adjust min and max values in the software with the governor back on to achieve this?

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 20:09:40
by Scott H
I don't remember the default settings for min/max, but, my process, adjust endpoints in the diagnostic tab, adjust mechanical, length of rod and position on servo arm to get as close as possible. Here's where I'm unsure because I don't remember the default settings for min/max, but, I then use the min/max settings to get full open and full close.

Now mind you I did this same process when I first started so I don't know what I did wrong then and I don't know why it turned out differently now.

I guess I'd make sure that my mechanical set up is not dead on and that will force the use of the min/max on both ends. when all is said and done, make sure the min/max settings are not at the end of the travel.
In my case, I mentioned that I lowered the max setting and didn't see any changes for 20 points. That, I think was the problem. I was at some limit. Don't know what that limit was as I was only at something like 115 on the max and by the numbers it goes much higher, but if the servo doesn't move when you click the up/down button than that's a warning sign.

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 21:30:41
by Malc1
Defaults are at 100 I think.
My throttle looks up set up correctly by the looks of it with min and max only a few points of these values.

So for me I will have to wait until the weekend to try the reduced value in the software to see what that does.

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 22:09:43
by Scott H
Just make sure that even though you are one or two clicks away from 100 that you actually have servo movement beyond the range that you have it set for. Where the other day my max was out of range. It was well within the numbers that are supposed to be in range, but the servo didn't move when I clicked the up/down arrows. Don't know why that is/was.

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 23:06:07
by Adrian
Playing around with max range while governor disabled, I discovered not being able to increase servo move, it could only be reduced.
However, by enabling governor and engaging governor without engine start, I saw requested rpm as well as servo moving in speed of Spool-up towards its upper limit, which could be adjusted with max range now.

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Wed 28. Oct 2015 23:13:12
by Scott H
Adrian,
That's interesting. I too had similar conditions, when the gov was on I had additional movement with the max setting. with the gov off limits to the max side of the setting. Are you experiencing any problematic governor issues?

Re: Gov 1.3.1 Goblin 700 Gasser

Posted: Thu 29. Oct 2015 14:35:59
by ZeXx86
Adrian: This is because your channel value was not that high so it can reach configured max. value.
If you increase it in your transmitter then you will see additional movement.