How do you get a smooth spool-up on Mutligov?

[Bobbyk]

How do I get a smooth spool-up on Mutligov, when I open up the throttle the rpm goes from 500 to 1800 in seconds, I have played with the startup speed (set to 5, default is 10) in the advance configuration but it expires after 5 seconds, which is still not enough time.

Any more ideas.

Thanks

Robert

[Street Flyer]

I have the same problem. I just took it out of gov mode and into limiter mode.

[LONEWOLF2440]

One reason i went with limit mode on all 3 flight modes:YeaBaby:

[Aerospire]

Normally the default startup is quite slow and works well. Here's some things you need to make sure/try:

1) You must make sure you program the "SET IDLE" point to where you would start your motor on the bench and it runs nicely (this should be normal mode, throttle stick all the way down, some throttle trim).
If you program it with full stop instead, the governor will engage early (below 1/4 stick) and cause a more abrupt start. The idea is that by the time you reach around 1/4 stick when the governor engages, you are not too far off from the target RPM.

2) Depending on what exactly is happening, going to a lower "Startup Speed" value actually will exaggerate the abrupt startup because the governor will move the throttle even slower and when the timeout time expires, it will engage right away. Try going the other way and increasing the "Startup Speed" to say 15-20 instead to see if that gives you a more gradual startup.

3) Option: You can always turn normal mode to OFF so that no governing is used (set speed to 499 RPM) and you will just run your normal throttle curve.

4) Option: You can change SPEED1 to OVSP (limiter mode) and turn "OvSpdTCrvLmt" in the advanced options to "ON". The limiter will never go beyond your throttle curve so you won't have an abrupt startup.

bob

[george0079]

[quote=Aerospire;

4) Option: You can change SPEED1 to OVSP (limiter mode) and turn "OvSpdTCrvLmt" in the advanced options to "ON". The limiter will never go beyond your throttle curve so you won't have an abrupt startup.

bob[/quote]


I guess I should read the manual, because I never knew it had this feature. That's cool

[lennydude]

LOL.......

Another reason buying the MultiGov was a good choice. Where else can you find THAT kink of customer support................so quick and on Christmas to boot !!

WTG Bob :)

[Azlum]

Why would you want the governor on in normal mode anyways???

I run normal mode with the governor OFF(for spool up, makes sense right?), then I set my speeds in idleup 1 and 2.

It's generally considered "bad practice" to do anything besides hovering in normal mode, so why would need the governor on at that point? Answer: You wouldnt.

[Bobbyk]

Normally the default startup is quite slow and works well. Here's some things you need to make sure/try:

1) You must make sure you program the "SET IDLE" point to where you would start your motor on the bench and it runs nicely (this should be normal mode, throttle stick all the way down, some throttle trim).
If you program it with full stop instead, the governor will engage early (below 1/4 stick) and cause a more abrupt start. The idea is that by the time you reach around 1/4 stick when the governor engages, you are not too far off from the target RPM.

2) Depending on what exactly is happening, going to a lower "Startup Speed" value actually will exaggerate the abrupt startup because the governor will move the throttle even slower and when the timeout time expires, it will engage right away. Try going the other way and increasing the "Startup Speed" to say 15-20 instead to see if that gives you a more gradual startup.

3) Option: You can always turn normal mode to OFF so that no governing is used (set speed to 499 RPM) and you will just run your normal throttle curve.

4) Option: You can change SPEED1 to OVSP (limiter mode) and turn "OvSpdTCrvLmt" in the advanced options to "ON". The limiter will never go beyond your throttle curve so you won't have an abrupt startup.

bob

Thanks Bob for your reply, will give it a go.

[DebianDog]

Why would you want the governor on in normal mode anyways???

I run normal mode with the governor OFF(for spool up, makes sense right?), then I set my speeds in idleup 1 and 2.

It's generally considered "bad practice" to do anything besides hovering in normal mode, so why would need the governor on at that point? Answer: You wouldnt.

EXACTLY :thumbup:

[dwilmot]

I'm pleased I read this thread, about to run in my new OS 50 hyper and have disconnected the Multigov to do this. Now I can just set it for 499rpm in Normal (speed1) and plug all of the leads back in and it won't try and seek a set speed.

If I use the recommendation to leave the Multigov turned off at Normal, what is a good 5 point throttle curve to use.

cheers

David

[dwilmot]

No reply necessary, I see where it has been talked about before and there is no one definitive correct answer. I'll experiment with a few throttle curves over the weekend and I expect that it will change as the engine runs in anyhow.

[DebianDog]

No reply necessary, I see where it has been talked about before and there is no one definitive correct answer. I'll experiment with a few throttle curves over the weekend and I expect that it will change as the engine runs in anyhow.

You should set up the helicopter on curves FIRST then enable your governor. The gov. will hide sloppy tunning but you want to get it as close to right first.

Like the others have said there is no reason to even have it enabled in normal mode as for forward flight and 3D you want to be in one of your idle up modes with the gov. enabled.