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Home✈️Aircraft🚁HelicopterBeginners Corner › Setting up Pitch and Throttle on Shuttle
07-23-2006 01:48 PM  14 years ago
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pgrbff

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Piemonte, Italy

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Setting up Pitch and Throttle on Shuttle
My Shuttle Plus is set up as close as possible to the Manual.
Normal Pitch and Trottle curves and rod lengths are spot on.
She hovers, but only with the throttle at full, and then theres no reserve.
I have original Hirobo training gear on her which is very heavy, is this why?
I dont have a tachometer, and no-one close by to help out.
Using a futaba 9 super, do I just trim the curves with VRa and VRc?
Whats the right way to get her hovering at mid stick?
I'm not sure, but I don't think the engine is running too rich, its an OS32 and shes less than 1 1/4 turns open.
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07-23-2006 04:09 PM  14 years ago
bobkins

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Bocholt, Belgium

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Hi,

If it is as hot in Ireland as it is here than that would be your problem. I had the same problem last year, I couldn't get my shuttle in the air even with a OS37 during the day with temps up to 35°C (95F), it helped a bit when I switched to a higher nitro percentage (10%). But in the evening with some lower temperatures it would fly without a problem.

There ar some great tips about engine tunning on this site:
http://www.raptortechnique.com/


Greets Rob
Hirobo Shuttle Plus , Trex SE V2
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07-23-2006 04:10 PM  14 years ago
scott sr

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SEAFORD

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You are really lost without a tach . You need to get one so you will be able to set your rig up properly !Scott Sr. ><> ****Support Our Troops**** ><>
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07-23-2006 04:14 PM  14 years ago
pgrbff

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Piemonte, Italy

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So I splash out and buy a tachometer.
What is the sequence of evnents to setting it up.
Its never 35C in Ireland!
Used to hover ok, I'm sure it only changed when I put on the heavier training gear.
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07-23-2006 04:54 PM  14 years ago
bobkins

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Bocholt, Belgium

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Hi,

I don't think you really need a tachometer, I have one but I got it after my shuttle was setup. I never used it to set up my trex. So I don't think that is a must buy item. I just adjusted my throttle curve until it hovered at around 5° pitch wich gave me a headspeed around 1700 on my shuttle.

I never gave much attention to the throttle and pitch curves in the manual. I just set a pitch curve of +9/-9 and adjusted the throttle curve accordingly. I hover at 3/4 stick not at mid stick like you want. If you are a beginner you should have a little less negative pitch like -3 or -4° pitch.

Engine tuning should be done first but I am not that great at it, but I followed the guide at http://www.raptortechnique.com/ with pretty good results

I don't know what your training gear weighs but is made to help you hover so it would be strange if it was to heavy to fly with,
I flew around once with a 1,25kg weight without trouble but with a slightly bigger engine.

May I ask why you are putting on another training gear if you had a different one on before?


Greets Rob
Hirobo Shuttle Plus , Trex SE V2
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07-23-2006 05:44 PM  14 years ago
pgrbff

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Piemonte, Italy

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The plastic centre piece was not solid and snapped in half. Being lazy I bought new gear instead of making a new centre block.
I dont think I've hovered a whole tank since building the shuttle without one problem or another. I seem to have it set up OK now but she'll only just hover at full stick.
I've been having lessons when I can get them, and the last one we removed the training gear and just started trying some nose in.
When I'm at home alone I get nowhere fast.
Proficient at turning cash and credit into smoke and noise!
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07-23-2006 09:07 PM  14 years ago
bobkins

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Bocholt, Belgium

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Hi,

Well I know what you mean, in the beginning I had some problems too.
But if you have the heli in the air you know that it is worth it

Maybe a sim would be a good idea, it is a better tool than a tachometer.


Greets Rob
Hirobo Shuttle Plus , Trex SE V2
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07-23-2006 09:47 PM  14 years ago
Butch

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New York

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Re-check for basic linear settings then create curves (after observing flight performance) to maintain constant headspeed.

When left stick is mid way, set pitch at suggested hover degree AND set engine carburetor barrel open half way.

Full left stick, set pitch at +9(example) with carburetor wide open.

At Low stick & low throttle trim set pitch at -3 or -4 with carb completely closed(shut down).

The heli should lift the training gear with no problem.
The Whirlybug Bit Me!
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