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Mini flight stabilisers

What's available, what do you think

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Jeffrey Cottrell 207/07/2020 17:57:57
186 forum posts
31 photos

Hi Martin

That's good to hear.

Bangood are pretty good at shipping out stuff they have in stock. Not so good with stuff they don't have. Couple of orders held up at the moment because they didn't say they were out of stock.

Guess with the current situation, a lot of high volume/low margin retailers are feeling the pinch, so they will do anything to get your money in their bank account.

Unfair on the poor customers, but that's the way of the world.

Out of interest, is your HK order coming through Singpost? I have two items ordered in April. Apparently haven't even reached the first stage of their journey, from HK warehouse to Singpost facility.

HK swear they despatched them, Singpost say they never received them. As usual, poor customer caught in the middle.

I can appreciate there are delays at the moment, but no-one will take responsibility for sorting this out. That's what really annoys me.

OK, rant over

Jeff

Phil Brooks07/07/2020 19:18:46
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468 forum posts
150 photos

Does anybody know which of these, if any, are able to operate in i/c powered models? I note that some, but not all, specifically say they're fit only for electric power, presumably because of vibration problems.

Denis Watkins07/07/2020 19:53:21
4544 forum posts
123 photos
Posted by Phil Brooks on 07/07/2020 19:18:46:

Does anybody know which of these, if any, are able to operate in i/c powered models? I note that some, but not all, specifically say they're fit only for electric power, presumably because of vibration problems.

All these work in I/C models Phil, and just want a level mount on a foam pad, much like a receiver.

Martin McIntosh07/07/2020 19:53:32
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3472 forum posts
1216 photos

The first stab I bought long ago was, I think, a GWS PO3 which even when mounted on the supplied super soft rubber did not take kindly to a 25 i/c, but it did its job until I gave up with it. I put the aerobatic model into a tail slide and it slid about 200ft, nearly hitting the ground. The current ones use a completely different type of gyros/accellerometers.

I shall need a slider to control the gyro gain on these ones and be able to turn the thing off pronto if I get the settings wrong.

Yes, my order is with Singapore Post where it has been sitting since April 8th. HK say that if has not arrived by tomorrow they will authorise a refund. I want my replacement EDF blade, not my money back no doubt less postage so if it comes to the crunch I shall go to Paypal.

Denis Watkins07/07/2020 20:43:31
4544 forum posts
123 photos

Slider for Gain, yes Martin

Best advice is in most makes instructions, to have a trimmed aeroplane before the gyro is connected.

Once trimmed, set the gain to its lowest where any movement, you can just hear the servos move.

One of my buddies hated the gyro, and on inspection he had fitted it upside down, and yes, that does mean

that the gyro fought the wind with opposite aileron.

The on / off switch helps to use the gyro at its best and off for aerobatics.

Martin McIntosh07/07/2020 22:42:06
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3472 forum posts
1216 photos

I have also used the ORX Rx/stab which works OK but I did not have/use an on and off switch.

Built four of the TN mini jets, yet to be flown, which is why I am interested in a more up to date system to use in these. I have some hack models which have previously been used for testing stabs. Its really just that flight mode function which I need to get my head round. Will google it.

Richard Clark 209/07/2020 06:13:21
422 forum posts

Why do some of these things have 6 axes in a 3 dimensional universe?

Ron Gray09/07/2020 06:25:30
2235 forum posts
978 photos

I assume that for each of the 3 axes there are a + and -, so for pitch there are up and down, yaw left and right etc I could be totally wrong of course!

Richard Clark 209/07/2020 07:09:17
422 forum posts
Posted by Ron Gray on 09/07/2020 06:25:30:

I assume that for each of the 3 axes there are a + and -, so for pitch there are up and down, yaw left and right etc I could be totally wrong of course!

You are probably right

Chris Bott - Moderator09/07/2020 07:45:33
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Moderator
6839 forum posts
1429 photos
1 articles

If I remember correctly a 3 axis gyro has 3 attitude sensors which will tell the unit which way up it is. But these are slow to respond to the slight changes that we need our gyros to correct. So 3 accelerometers were added hence the term 6 axis.

Ron Gray09/07/2020 07:49:45
2235 forum posts
978 photos

Ah, right, so maybe better to describe them as 6 sensor stabs then.

Denis Watkins09/07/2020 08:18:13
4544 forum posts
123 photos
Posted by Richard Clark 2 on 09/07/2020 06:13:21:

Why do some of these things have 6 axes in a 3 dimensional universe?

Also, with 6 axes came SAFE

When everything goes wrong, let the sticks go, and the model can correct.

It is aimed at novice students as a competent flyer would have great difficulty letting go of the sticks.

The Mode for your own style can then be chosen from 3 modes

Ron Gray09/07/2020 08:42:32
2235 forum posts
978 photos

The ORX one in my original post only has 2 modes, beginner (SAFE) and 'expert'.

The Radiolink Byrne A has 5! (Vertical/ Angle / Rate / Horizon /Manual)

Martin McIntosh09/07/2020 10:55:25
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3472 forum posts
1216 photos

Each of the three gyros is paired with an accellerometer, totally different to the old piezo or mechanical ones and not really affected by vibration.

I have been looking at my JR manual to see if it is of help but this is an old system now and talks of using two channels to control two gyros giving only any two of the three control surfaces stabilisation, so back to square one.

I need to work out how to get one channel to control gain and respond to a three position switch, but have not as yet connected up one of the units.

Denis Watkins09/07/2020 11:36:32
4544 forum posts
123 photos

Is this the unit you are using Martin, or another 1?

NX3 3D Flight Controller Gyroscope

Martin McIntosh09/07/2020 16:45:57
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3472 forum posts
1216 photos

Hi Denis, it just says NX3 on the unit and instructions.

Denis Watkins09/07/2020 18:06:37
4544 forum posts
123 photos
Posted by Martin McIntosh on 09/07/2020 16:45:57:

Hi Denis, it just says NX3 on the unit and instructions.

Thanks Martin

The instructions mention a programme card that I couldn't see in the pics

The card to set up a switch

They are very specific about initialization to the Tx on a new empty model space, not a existing set up and

have the model still on the ground

I say this as I often set up on my knee and that would not work with this unit

Edited By Denis Watkins on 09/07/2020 18:07:12

Jeffrey Cottrell 209/07/2020 18:35:02
186 forum posts
31 photos

Hi Denis

Looked through the instructions for my NX3 and can't see any reference to a prog card. Could you tell e where you found it?

Jeff

Denis Watkins09/07/2020 19:31:01
4544 forum posts
123 photos

1000 apologies guys, my fault, there is no card

a gentleman came on to me by message and his unit assigned switches by programme card

I did not check through far enough to confirm he was Not talking about the NX3

sorry again

Martin McIntosh09/07/2020 19:46:16
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3472 forum posts
1216 photos

I have a fair bit of experience in setting up 250mm quads with CC3D`s and know that they need initialising perfectly level, also the ORX ones. One quad kit came with a TGY i6 set which has a two position switch for self levelling on/off and a couple of knobs to set the value but just how all that lot came to work I do not know.

My problem is simply to translate the program to a DSX9. As I said I have not yet connected one up and it may work out simpler than I thought. I need to put the finishing touches to yet another new model before I get too involved with this; also to test fly some of the intended recipients as they are before complicating matters.

Thanks for your input.

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