do i need a govenor

[Keratos]

watching a set of videos on the build of my heli over at helifreak (Trex600 Nitro Pro Build Vids - HeliFreak) and there is mention of a Governor.

I have searched these forums but what I havent been able to discern is why I need one? this heli has been flown before - I've seen it - and very good it was true.

I hear that the Governor maintains head speed. Why does one need to do this? Doesnt the thottle do this? anyway, like I said, this heli doesnt have one but has been flown many many hours.

[Delarado]

When you punch the pitch and do full pitch climb outs, does the head speed drop?

A governor will increase throttle to combat this effect.

It's a must for 3d.

[waveydavey]

You don't need one for now, yes they do a great job and maintain headspeed as best they can but worry about the rest of it first. The governor can come later

[Keratos]

You don't need one for now, yes they do a great job and maintain headspeed as best they can but worry about the rest of it first. The governor can come later

thanks pal. I didnt understand Delarado

[waveydavey]

Its terminology again I'm afraid, Carl is correct in what he posted

[Keratos]

yes, quite. apologies. I wasnt being offensive, just saying i didnt understand the terminology. I have since put a note in my signature!

[Rctintin]

Yep, agreed, you don't need one for now. You can use throttle curves just as well, as everyone did before govners became available. A very good vid to learn throttle curves is in the 'Ray's authoritative series' from www.rayshelitech.com (fastlads and midlands sell them)

A gov uses a magnet in the clutch bell or main gear to read it's speed, and then takes control of the throttle servo to alter throttle position before you even know your head speed is dropping, or, over speeding. For general sport flying, hovering and circuits, it is not required.

[Planehazza]

You set up throttle curves and the throttle carb goes to what the Transmitter curve tells it to, regardless of load and actual head speed. If you start doing 3D or bog the motor down, a governor will help a lot as it is able to detect the RPM of the head and adjust accordingly. So say you have it set for 2000RPM, but you do a loop and the speed starts to drop, the governor will add more power in an attempt to get it back up to speed.

If you decide to try one, I have two CSM Revlock 10s sitting here doing nothing I could sell very cheap. It would just need a new magnet. PM me if you're interested.

[Keratos]

You set up throttle curves and the throttle carb goes to what the Transmitter curve tells it to, regardless of load and actual head speed. If you start doing 3D or bog the motor down, a governor will help a lot as it is able to detect the RPM of the head and adjust accordingly. So say you have it set for 2000RPM, but you do a loop and the speed starts to drop, the governor will add more power in an attempt to get it back up to speed.

If you decide to try one, I have two CSM Revlock 10s sitting here doing nothing I could sell very cheap. It would just need a new magnet. PM me if you're interested.

Thanks, but read my signature, particularly the text in red

[Rctintin]

What Harry has said is pretty much as easy to understand as it gets, except you may not know a cms revloc is a make and model of a govner. He was just explaining how and what a govner does, and where it would be of use.

If you get into difficulty's setting your heli up, then a few hrs with a pro like Jason at www.ultimatebuildandfly.co.uk would get you started on the right foot, and make the learning experience a little bit less daunting.

[Keratos]

What Harry has said is pretty much as easy to understand as it gets.

Errm, well maybe for you and others not as dumb as me

[Jamez]

No you do not need a governor to learn with. I am grass roots level ( bottom end ish ) and one of my 600's still fly on throttle curves.

Just to explain

Throttle curve is how far open the throttle is compared to where the throttle stick on your transmitter. So say for example at bottom stick the throttle curve is set to 5 % and at middle stick it is set to 50 % and top stick is 100 %. Your throttle servo will move from 5 % open at bottom to 100 % at top ( fully open ). Depending on how much pitch you have, the blades will start to rotate slowly at the bottom then build speed until the speed balances against the amount of pitch on the blades ( angled in degrees hover point is about 5 degrees pitch ) head speed increases and decreases due to load caused by pitch and other inputs you make. Carefully balancing of throttle and pitch curves will achieve a relatively constant head speed.

A governor does all this for you. You set a target head speed and it controls the throttle in such a way as it needs to hit that speed.

[Rctintin]

OK then, to keep it simple, for a head speed you want, and we can use Harry's figure of 2000rpm, you may have to use say 80% throttle opening.

Now then, if you were to load the head up (read that as more pitch) the head speed will drop (think of driving a car up a hill, so to maintain your speed, you push harder down on the throttle pedal). The govner will be reading your head speed, and will add extra throttle for you (say 90%) to compensate for the slowing head speed.

Conversely, if you come off your pitch (dropping height quickly) the head speed will speed up (think back to a car going down a hill speeding up)
so the govner will close your throttle to say 60% to help maintain a constant HS (head speed)

In short, it sounds like you dont need one just yet.

[Baldie]

Errm, well maybe for you and others not as dumb as me

Not being off, But do you understand what a Heli like a Trex 600 is capable of doing?

and I don't want to sound off when I say its not a toy, or something to undertaken without A LOT OF READING.

If you have never flown or set up a heli before PLEASE PLEASE, take the advice given to you and get someone to help you with it.

It is not an exaggeration when I say, that that heli could kill you or cause serious bodily damage.

Also, you need to accept if you want to fly helis you will need to do a lot of research and thinking yourself.

There are very few questions that the answers cannot be found with google, Then when you post a question in here you will understand WHY you are asking the question and understand the answers you are given, and can direct the responses to help you get the answer you need.

Please don't take offense, But I (And the members of this forum) do not want to see/hear of anyone getting hurt, Or hurting a bystander and possibly causing problems for the sport.

Also you should get insurance (RCHA or BMFA) It really should be as compulsory as using a car, But its not - But thats no excuse not to have it.

[Keratos]

Not being off, But do you understand what a Heli like a Trex 600 is capable of doing?

NO

You are correct
But search for my posts , all is explained if you search and read my posts
Thanks