Stratus Rolls to the right as I put in the Pitch

[Zilly]

I have always found that even though I set up my swash so its level at Top and Bottom using the MA Swash tool (twisting it to ensure even gap) I still get a roll to the right especially noticeable in power climb outs.

I get the same problem inverted except in the opposite direction.

I can remove the roll using a pitch to aileron mix.

I cant understand why the heli would roll even though the swash is perfectly level.

any ideas?

[DavidH]

Just because it looks perfectly level. Doesn't mean the heli is going to fly level. I am attentive about setting the swashplate level at mid, top and bottom on the bench. But I guess the flight forces will allow the servos to move further than they do on the bench. I pretty much have to adust the end points on one of the servos for the model to fly level at full positive and negative pitch.

David

[Zilly]

David do you use the ATVs to fine tune instead od a mix?

z

[DavidH]

Yes ATV's instead of mix.
Just normally takes adjustment on one servo only. I have never adjusted but one and got it like I wanted it.

David

[Dr.Ben]

With the exception of the special mixers in the 12Z and 14 MZ, you'll use the ATV's to track the swash at extremes of collective travel. If you have a badly matched set of servos and the model veers off at an intermediate collective position while climbing straight at full high or low pitch, then you need to use a mulitpoint mixer with a point as close to the offending stick postion as possible.

Ben Minor