RunRyder - Spartan DS 760 & Trex 600 Nitro very low gain...

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Radio - Servo - Gyro - Gov - Batt > Spartan DS 760 & Trex 600 Nitro very low gain...

nox
Heliman
Location: Europe, France, Toulouse

Hi,

I buy a DS760 to go with my Trex 600, but I must decline sharply the gain in AVCS mode >25%

I have mounted as shown in the notice with the metal plate beetween the two two different foams, I put on two cyclic's servos on the option plate.

It is normal that the gain is so low ? Or I have an other problem ?

Thx

Nox(France)

01-27-2008 09:17 PM

Angelos
Key Veteran
Location: nr Oxford, OX11, UK

The ds760 user guide was recently updated and contains more details on setting up the gain. The new version is available on the Spartan website and I think you will find your answer there.

-Angelos

Spartan RC R&D - Visit us at our local club www.helicollective.org.uk

01-27-2008 09:23 PM

DOKEY
rrProfessor
Location: Northampton UK

I was trying out the Spartan a little today, and noticed low gains, but not as low as yours.

I tried the recommended way, ie. futaba foam, metal plate, thin foam followed by the gyro, and got the gain up to 46% with out any problem.
Then I tried just the futaba foam in between the gyro and heli, and although the gain stayed the same, the performance seemed to improved.

Note: this gyro is mounted at the back of the main mast!

At this gain though I felt that the piro consistency was still not quite 100% as what I am used to, so I will hopefully have a little play around next weekend with it again.

I wounder if the Trex600 tail geometry has a little to do with the tail performance with the 760

Thanks for the service Angelos

Check the gallery!

01-27-2008 09:26 PM

HOMEPAGE

nox
Heliman
Location: Europe, France, Toulouse

I realized that my OS ball bearings were dead do you think that this might upset the gyro due to vibration for instance?

Apart from that I am generally very pleased with this gyro because with only 25% of gain it already works very well.
Very easy to adjust and very efficient.

It is just that I buy the USB flash Link to settle gain stop and start and it will be perfect.

Thx

Nox

01-27-2008 09:40 PM

DOKEY
rrProfessor
Location: Northampton UK

Bad engine bearings will certainly upset the gyro and cause for a lower gain, as the engine is running rough causing vibrations through out the heli.
Change the bearings before damage is caused to the engine.

Check the gallery!

01-28-2008 01:05 AM

HOMEPAGE

afeitang
Heliman
Location: Hawaii

For 600N, What is the normal gain % on xp9303 72Mhz?
I am useing 9256, which hole should i use on the 4 star sevo horn?

08-19-2008 11:20 AM

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Radio - Servo - Gyro - Gov - Batt > Spartan DS 760 & Trex 600 Nitro very low gain...

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