3GX 2.1 problems

[Rich23]

Well I finally got my new bearings today for the 450 so thought I would try out the new 2.1 update. As soon as I took off the cyclic response was extreme to say the least. I could not control the heli and when ever I tried to hover it would hunt around on the cyclic tipping forward or to the right. Then just as I got it down over it went and bang!


After checking through all the settings I could not find anything wrong with the 3GX setup. I had 30% expo in the transmitter and the roll rates reduced to 30 in the 3GX software. I rebound and went through the DIR prior to flight and checked all servo responses too.

I'm baffled at this and its going to cost £50 to repair. Blades, boom, front TT gears, head, bearings, feathering shaft and main bearings too start with

Anyone else had similar issues?

Rich

[tourerjim]

If you like I can give you the parameter file for the 450 which makes it very stable, the roll rates you adjust after you set cyclic degrees this is why Align put the roll rates first as these are the ones you would change as your flying progresses.
On setup you dial in you 8 degrees in DIR then in flight mode you have to set you cyclic again in the parameters if you didn't do this your cyclic would have caused heli to be way to unstable because the default parameter would give you 14 degrees when you should only be about 8', Align manual tells you to max cyclic without any binding or 14 degrees & imo its wrong as any heli you setup like that is just way to unstable.

[Rich23]

Hi

Yes please Jim. Might help me understand if I did some thing wrong in the setup. I will PM my email.

Thanks

Rich

[coolice]

Hey Rich.

Sorry to hear you've had a bad first experience of V2.1 mate.

I to have a nice tame set of 450 settings I quickly tweeked for a friend, so I can email those at some stage of you like.

As above though, when you run through DIR did you set the cyclics to 8 degrees using the swashplate mix values? I found the model to be lively once initially set, before I started tuning parameters.
.

[Rich23]

Hi

Thanks

I had 8 degrees on cyclics using the swashplate mix. Looking through my setup it looks like I did not set the parameters in flight mode properly. Bu**er. At least I get to enjoy the rebuild It would be good to compare a few different setups. I will PM you.

Thanks

Rich

[tourerjim]

When do you think your have back together.

[helimadness]

DIR setup and flight mode give you totally different setup.
I have had 4 crashes and only 1 that was 100% pilot error. The others I blame on 3gx and one maybe servo failure. I have since changed to Vbar and the difference is amazing. Totally different heli, Not that I really know but is flying so much better and given me a lot of confidence.

One thing when going through the Vbar setup is I had to move my servo ball links in closer to get enough resolution on the servo arms as it was outside the Vbar parameters on the long horn spots. The big difference I have noticed with Vbar is it feels a lot less robotic, a lot smoother on the sticks. Maybe the 3gx system might benefit to this same theory. I too was down to really low numbers on the 3gx to get the right cyclic travel. So maybe going shorter servo arms and a bigger number for the travel range gives you a smoother and more controlled movement.

Just a thought.

Cheers

[Rich23]

I'm hoping to have her back in the air by wednesday/thursday depending when I get the time to rebuild and then set up. Should have the parts for Wednesday so not too bad. Will just have to put the 600 EFL build on hold for a few weeks but I'm in no rush with that just yet.

Thanks for that a bit of research is in order on the servo ball horn positions. I'm hopefully going V-Bar on the 600 after christmas and will then move the AR7200BX on to the 450 if I can't get the 3GX how I want it.

Thanks

Rich

[tourerjim]

I'm hoping to have her back in the air by wednesday/thursday depending when I get the time to rebuild and then set up. Should have the parts for Wednesday so not too bad. Will just have to put the 600 EFL build on hold for a few weeks but I'm in no rush with that just yet.

Thanks for that a bit of research is in order on the servo ball horn positions. I'm hopefully going V-Bar on the 600 after christmas and will then move the AR7200BX on to the 450 if I can't get the 3GX how I want it.

Thanks

Rich

I've emailed you the file & ill guarantee your love it.!

[Rich23]

Thanks Jim

Rich