Swash guide binding

[jmiceli11]

I have a Logo 600 with V-bar. I am using Futaba 9451's and the Mikado arms. I have the balls 16mm out on the arms. I have the rods from the swash to the arms the described length as in the manual. My pitch range is +/- 12. My problem is when I go to full negative and full back cyclic the swash bottoms out in the guide, all on the bench of course. Did anyone else have this problem? If so how did you fix it?

Thanks,
John

[OICU812]

If your arms from swash to driver block are 90 while your servo horns etc are at zero pitch you should easily manage 14-15 degrees of collective both ways without any binding or issue, sounds to me like you have the driver to high up is all, if you feel your pitch is truly correct. Did you setup your servo horns at 90 degrees while having your servos in "test mode", that centers all the servos and forces tham at their center point, from there you adjust minor subtrim to get perfect 90 on all collective servos. Then once that is acheived adjust the height of the swash driver to where the bottom mixers and levers are perfectly 90, that is it for spacing. The adjust the phasing of course while ensuring you have rotated the head against the roation of the jesus bolt so that slack is taken. WIth the top two links adjusted to zero pitch at middle stick "again servo test mode to ensure center" you should have equal throws and no binding to the amounts mentioned.

[jmiceli11]

I mis-spoke it binds in the swash anti-rotation guide. At full negative and full back cyclic the pin ball that comes out of the back of the swash into the guide bottoms out.

I did the set-up as you describe.

John

[cptsnoopy]

It sounds like you may have your rods shorter than you think from the servo's to the swash or the servos are in upside down. I have the same 9451 servos with 15.5mm of rod showing between the links and even though the anti rotation pin is running lower in the slot than center, it does not get less than 4.8mm from the bottom of the slot. I don't know if this helps or not but I ended up with 48.25mm of rod showing between the links on the upper two rods. The only other possibility that I can come up with is maybe you have much larger throws from the servos setup in the tx and or the v-stabi software.

charlie
:)

[OICU812]

OH!, well that is easy, just lengthen the rods from servo horns to swash. The manual is not the final word. You will still have alot of room to lengthen, I remember having to do this as well for same reason.