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Home✈️Aircraft🚁HelicopterHIROBOHirobo SDX › Multigov Pro : Governor vs Rev Limiter
06-18-2009 02:28 AM  11 years ago
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Andy.Kim

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Multigov Pro : Governor vs Rev Limiter
I just performed some tests today with the Governor and Rev Limiter. The governor works very well but I found the Rev Limiter to be slightly better. The Rev Limiter held the headspeed much better which translated to more power and consistent cyclic response.

I'd like to share my settings for others to experiment with.

Speed1 1850 STD (governor)
Throttle settings: 0, 50, 100

Speed2 2100 STD (governor)
Throttle settings: 100, 80, 100

Speed3 2100 3D (Rev Limiter)
Throttle settings: 100, 100, 100

Good luck and Happy Flying

Edit: Added by TMoore

"3D-ThCurvLmt needs to be set to on. This is the mode for limiter. I would then take the 3D-Agres value from 25 down to 16 and work my way back up. I've found that 16 to 18 is a good setting."
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06-18-2009 03:38 AM  11 years ago
RayoVac

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Did you go into the Advanced setup and set 3D-ThCurvLmt to ON??

I wanted to try the Rev-Limiter function, but did not quite understand how it would be setup. Seeing your settings it now makes sense, but it appears you need the 3D-ThCurvLmt on to actually get Rev Limiter Mode with the 3D setting.

When I get my bird back together (Titan SE) I am going to try this as well.

Thanks for the testing.
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06-18-2009 04:48 AM  11 years ago
Andy.Kim

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I was thinking that exact same way too. In advanced setup, 3D throttle is OFF. Everything else is default. When I toggled between idle1 and idle2 I can tell that governor was off in idle2.

Let me email Aerospire to verify I have it setup correctly.
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06-18-2009 05:48 AM  11 years ago
RayoVac

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I think if you have not changed that setting in the Advance Menu, you are still in Governor Mode. The difference between STD and 3D is more the aggressive response nature of 3D vs STD.

To actually get Rev-Limiter Mode based on what I am understanding from the Manual... you would do EVERYTHING you did with IDLE2 (Speed3), plus the change to 3D-ThCurvLmt in Advance Menu.

Then like you have it would need to be set to 3D instead of STD, and the matching throttle curve would be 100-100-100 instead of 100-80-100, again like you have on your Speed3.

If you talk to Aerospire about this, please make sure to post back your findings. I still plan to setup as you have for a test.

Previously I was running Idle1 and Idle2 in 3D. I was experiencing over-speeding quite often when coming out of big loops, or dropping out of Tic-Tocs etc. So I changed both speeds to STD from 3D, and it seemed to have helped... which is just the opposite of what I thought it would do.

One of the guys I fly with has the older MultiGov (non-pro) that he runs in Rev-Limiter mode instead of Governor mode... and he likes it better that way. The older MultiGov's menus make the Rev-Limit mode a bit more obvious for config. Thus why I was trying to figure out how to setup Rev-Limit mode to play around with. I think your info plus the Advanced Menu option is the key.
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06-18-2009 06:33 AM  11 years ago
Paul Woodcock

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hi guys

This is from the notes on the rev limiter part of the instructions:
"We don’t believe this is the best option since you
would need to put your throttle curve at a flat
100% for maximum performance. Leave OFF
unless you really want this type of operation."

That says to me - don't bother... the governor works well enough in the std and 3d setup.

With regard to over speeding after exiting hard maneuvers when in 3d setup..... it is supposed to do that. It is assuming you are going to whack it again and it using the temporarily unloaded time to max advantage.

regards
Paul
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06-18-2009 06:26 PM  11 years ago
RayoVac

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Paul,

Thanks for the explanation on the overspeeding, that makes sense why it was doing that, and why switching to STD fixed it.
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06-18-2009 06:27 PM  11 years ago
Andy.Kim

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RayoVac,

I'm following the same logic as you and I wonder if you're right. This is an email I got from Aerospire the other day...

"for each speed#, you can toggle between STD (governor) and 3D (limiter) mode by pressing the +VALUE and -VALUE buttons at the same time. Do this when you see the right SPEEDx on the screen."

I emailed them about the Advanced configurations and I expect a response by tomorrow. I will change the Advanced settings to 3Dthrottle On to see if that makes a difference.

pwood,

If 3D is still governor mode then I am quite impressed. It felt really good but I would still like to experiment with the Rev Limiter. I've been told it unleashes a touch more power.
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06-18-2009 07:15 PM  11 years ago
TMoore

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IMHO, the RevLimiter option is the only way to run the MG Pro. I know Bob won't agree but it is just about as plug and play as it gets if you flatline the throttle curve and let the MG Pro take out throttlw it works much better.

TM
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It's like getting a driver's license without the driver's test.
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06-18-2009 07:21 PM  11 years ago
Andy.Kim

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TM,

Do I have it setup correctly for rev limiter? Or do I have to change 3dthrottlecurve in Advanced settings to ON?
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06-18-2009 07:27 PM  11 years ago
TMoore

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3D-ThCurvLmt needs to be set to on. This is the mode for limiter. I would then take the 3D-Agres value from 25 down to 16 and work my way back up. I've found that 16 to 18 is a good setting.

TM
Part 107.
The only ZERO flight hour certificate in the world.
It's like getting a driver's license without the driver's test.
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06-18-2009 08:02 PM  11 years ago
Andy.Kim

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Thank you. I'll give that a try
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06-18-2009 11:02 PM  11 years ago
rexxigpilot

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TMoore hit the nail on the head to correct the overspeeding. The 3DAgres neeeds to be turned down whether you use governor or limit mode.
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06-19-2009 02:34 AM  11 years ago
Andy.Kim

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Thanks TM

I tried the 3D Aggressive value at 16 and I didn't feel a need to change it. With the Rev Limiter ON it produces a touch more power than governor mode. It's a great setup!
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