DX6i, no idle up?

[rotarydoc]

Hi guys, me again!

Things on the servo setup are going along very well, but one problem is bugging me. I don't have any idle up when I flip the "F-mode" switch on the DX6i. It works fine on both Blade 400's, so it's not the radio itself. I am thinking some adjusment is not correct, but I can't find anything. The throttle curve, pitch curve, etc, seems to be good. I know this is more of a radio question, but I know you guys are sharp!

In other words, I have good collective travel, and say I put it at about 20% throttle, and hit the idle up switch, there is no response, no negative pitch, no servo movement at all.

It's really not that big a deal to me, since I have NO intention of any 3D, inverted flight, etc, and I can just set it up for like -2 to +11 degrees of pitch in normal mode and I'll be happy...plus no way to accidentally put it in idle up....maybe not such a bad thing anyways!

Thanks in advance!

Glenn

[R0t0R]

May not be the right way to do it since I'm new to this too, but I set up my helis in Idle up mode to get the full collective travel. (-11, +11 or what ever you select for full travel and linear from 0% to 100% on pitch curve.) Then go into normal and set first half of pitch curve to where I have about 3-4 degrees negative at trottle stick at idle, (about 40% on pitch curve) linear to 0 degrees at mid stick and then linear up to 100% on the pitch curve at max trottle. This give me plus and minus 11 degrees in idle up and minus 3-4 degrees to plus 11 degrees in normal using the DX6i. Not at home, but think that ends up looking like: Idle up pitch curve, 0-25-50-75-100, Normal, 40-45-50-75-100. Again, I set everything up in idle up to get total collective travel, then set normal to be a percentage of the negative pitch travel available.

[Jetleaf]

This would be a good one for Gr4y, I think he has a DX6. I have a DX7 and don't know a thing bout the DX6

[rotarydoc]

Hey ROtOR,

Man, thanks for getting me headed in the right direction! It was the pitch curve setup, between you, finless,and the manual, I got it all to work like it should.

I ended up with the 7mm neutral spec, and the 11.2 for the upper travel, and the 2.7mm for the lower travel on the swash...I also have zero pitch (the best I can tell using the manuals method, my pitch guage is too big) at the 7mm mid point....does that sound about right?

THANK YOU!!

Glenn

[rotarydoc]

ROtOR,

Well, I owe you and the forum members an more detailed explanation, since I was very tired last night when I posted the fix...

When I first went to setup the DX6i, I created a new model, and in the process, did a complete reset of the settings. This made the pitch curves the same in normal and idle up modes, so when I hit the idle up switch, there was no response, since the curves were indentical.

So, once I got the servos at 90, and links all setup, I did as you said, and brought the normal pitch curves up to what you said, 40-45-50-75-100...and all was good!

I still didn't have zero blade pitch at the 7mm neutral, so I adjusted the L2 links until I have something close to zero...

Anyone have any suggestions on a blade pitch gauge for these small blades?

Thanks again all !!

Glenn

[GreenCello]

I've been using the simple Align pitch gauge. I had to remove a some plastic from both blade clamps to allow them to move closer together than stock but not much (1-2mm?).

[rotarydoc]

Hey Greencello,

Thanks for the tip! I will look for the Align pitch gauge online. Any idea where you got it? I looked at my Eflite, and it's not an easy mod to remove the plastic from it's clamps, because of the way it is made.

Glenn

[CHOPPERTECH]

If you are setting up servos, and are using thottle hold instead of unpluging motor. The trans will not go into idle up. Hope this helps

[R0t0R]

Hey rotorydoc!

Glad I was able to help and something I suggested actually worked!

I'm with you on the pitch gauge being too big. I've just been using the manual method with rotating the blades 90 degrees and checking with a protractor. To get 0 degrees at mid throttle, I have about 8mm frame to swash. Might try what you did and adjust the L2 links so my other links are close to the manual specs and I get 7mm like the manual says at mid throttle stick. Don't really know what difference it makes on the frame to swash neutral measurement as long as the blades are at the right pitch.

[rotarydoc]

Hey ROtOR,

Great news, I got my Gaui's maiden flight in yesterday, and it flew like a champ! I guess my 7mm and the zero-by-eye setup worked out pretty well!

Like you said, I just used the procedure in the manal by putting the blades at 90 degrees and level with the flybar. Works pretty well, actually! I would still like to find a pitch gauge that actually fits. I will look for the simple Align one mentioned above next time I order some stuff.

Thanks again, your help was priceless on that very late Friday night setup session!!

Glenn