Another newbie :)

[MeGrimm]

I'm getting on nicely with assembling my trex, and I'm wondering what you recommend with radio installation. The book shows a few different combinations and I don't know which is best for a beginner...

I wanted to put the battery on the little angled plate on the nose, the speed controller underneath, and the Rx under the tail belt drive gear. But then I thought of vertical CG and stability, and cooling for the speed controller

Anybody got any suggestions?

[Sesame]

Thats exactly how I have mine. Im using an A6100 the Spektrum 2.4 gig mini reciever in mine, its been fantastic.

The C of G is spot on and not had any problems with the esc getting overheated. I think it was finless bob who said that with the battery on that plate it took the weight into line with the shaft rather than hanging underneath it. if you watch his vids he explains it alot better than I can.

[Nutz]

In my Rex I have got battery on front bottom plate, AR6100 on front top angled plate and ESC stuck to the outside of the left hand loser frame just behind the canopy.

I had this set-up in me SEV1 and now have it in my SEV2 which I have had around 5 flights with, the CoG is feeling very nice and it continuously piros like a Trex600 (on the spot with little to no drift).

[MeGrimm]

So far so good with the build. This is one beautiful machine!

Can anyone advise on my next moves please?

Mode 1 or 2

When I was messing about with helis before I was using Mode 1 and didn't know any better. I had trottle and rudder on the right and both cyclic controls on the left. But since then I've seen that most people seem to fly on Mode 2. The Tx I've got is also Mode 2. Should I stick with what I know or go to the Mode 2 side like everybody else? Makes sense but I'm wondering about the wisdom of re-learning instinctive reactions from the ground up... Also, what controls are attached to which stick movements? Do you put both pitch and roll on the same stick?

Throttle

What do I do about throttle / collective? I assume one is mixed to the other and I only use the throttle stick on the Tx to control both, but which one do I assign to the Tx stick and what ratio is set between them? And throttle curve for a beginner?

Pitch

And then to pitch. I'm a beginner (I think that shows eh? ) and I won't be doing anything aerobatic for a while so do I need a setup with negative pitch?

And how much pitch should I be aiming at overall? Is the throttle stick at the bottom for zero pitch / throttle and everything above that just increases lift, or do I set it so that zero pitch is at the central stick positon with positive pitch above there and negative pitch below? Maybe it's all in the manual and I've missed it...


I really appreciate the patience and help you're all giving. It's really helpful and also feels a bit wierd to be at this side instead of the one trying to help!

[richieclarkie]

Hi MeGrimm

Glad you are getting along OK. The TREXs are nice bits of kit, you are going to love flying it.

MODE
I would say definitely Mode 2 if you can. The guy who has helped me was mode 1 and he wishes he was mode 2.

THROTTLE and PITCH

The ESC should take care of the headspeed for you, although you will need to setup what's called a throttle curve on your TX. Depending on the radio you ought to have 5 points to set and the normal would be 0 70 70 70 70 or whatever the value you want for you rotor speed.

With pitch I would suggest a soft setup that includes some negative pitch. It is better to learn with some and therefore you won't be able to develop any bad habits. Say + 8 degrees -5 degrees. So that may look something like. 25 35 50 60 80. That's not going to be exact because you will want a smooth curve for your pitch. Some radios show the curve graphically which is much easier to work with.

All this will needs to be done on the transmitter and not the head.

What radio are you using?

[mattie-lodge]

Hi MeGrimm

MODE
I would say definitely Mode 2 if you can. The guy who has helped me was mode 1 and he wishes he was mode 2.

.

What radio are you using?

Mode 1 rules OK

Much easyier too fly.

PS Never trust what I say

[ChrisB]

Matt lies a lot

[MeGrimm]

So if I've got this right:

LEFT STICK

Collective (bottom stick = -5 degrees pitch, middle = hover pitch, top stick = +8 degrees)
Rudder

RIGHT STICK

Aileron
Elevator

And then the ESC is contolled by another channel mixed to the Collective stick postion to more or less maintain a constant head speed ...

richieclarkie my Tx is a Hitec Eclipse 7

[MeGrimm]

Just waiting on my crystal to arrive for the Rx now so I can get everything set up properly. I'm not hurrying this. It's fun just building this heli and I still have to learn more on the SIM anyway before commiting the heli to the sky.

So far I seem to be getting on ok with mode 2 so hopfully should be fine there.

[HighlanderJC]

So if I've got this right:

LEFT STICK

Collective (bottom stick = -5 degrees pitch, middle = hover pitch, top stick = +8 degrees)
Rudder

RIGHT STICK

Aileron
Elevator

And then the ESC is contolled by another channel mixed to the Collective stick postion to more or less maintain a constant head speed ...

richieclarkie my Tx is a Hitec Eclipse 7

Collective Low -4 mid 0 High +9

I used a normal throttle curve to learn (0 25 50 75 100) but did alter lower range to get a bit more HS.

Start of with a new model in the TX so that everything is default.

http://www.trextuning.com/index.php is a good place to find out almost everything you need to know. Thats where I started, and I learned to fly with the 450HDE in my garden, with a lot of time on the sim as well!!