Need help with setting pitch

cozmokramer · 03-06-2011, 02:10 PM

Finishing up my build. Set up the head per instruction, and had my blade grips set to "0" pitch at midstick. All ball link measurements were spot on according to the instructions. Now with blades attached, and pitch gauge on, my blades are at 8 degrees positive at mid stick. Do I just go back and readjust linkage length, or did I do something wrong. Any suggestions would really be helpful at this point. I have the FBL head.

ourbail · 03-06-2011, 02:28 PM

no way that can happen double check radio that u are in 0 pitch at mid,u can take blade off and put a driver thru the grip and that will also show if u are off,,recheck link and make sure swash is level and horns at 90

markleyland · 03-06-2011, 03:39 PM

Manual isn't spot on and some adjustment are needed. Adjust the links until you get 0 at centre stick and have equal positive and negative pitch. If you have 0 pitch at mid stick but are not getting an equal pitch range you need to adjust the servo to swash links (raise or lower the swash). Don't forget to set the phasing unless you have the new style head block of course.

This should help if you get stuck http://helituning.com/index.php/vide...-overview.html.

bad007 · 03-06-2011, 08:07 PM

It sounds like the servo horns where installed before you had the throttle at mid stick.
Initial setup- linier pitch curve 0 25 50 75 100, 50% throttle, no sub trim, no TX trim install horns as close to level as poss, level with subtrim. Take it from there, the link measurments get you at best close.

cozmokramer · 03-07-2011, 09:12 PM

thanks for all the help. Bad007 you hit the nail on the head. thanks

03-06-2011, 02:10 PM	#1
cozmokramer Registered Users My HF Map location Join Date: Aug 2008 Location: USA, New York, Orchard Park	Need help with setting pitch Finishing up my build. Set up the head per instruction, and had my blade grips set to "0" pitch at midstick. All ball link measurements were spot on according to the instructions. Now with blades attached, and pitch gauge on, my blades are at 8 degrees positive at mid stick. Do I just go back and readjust linkage length, or did I do something wrong. Any suggestions would really be helpful at this point. I have the FBL head.

03-06-2011, 03:39 PM	#3
markleyland Registered Users Join Date: Dec 2007 Location: Colchester, UK	Manual isn't spot on and some adjustment are needed. Adjust the links until you get 0 at centre stick and have equal positive and negative pitch. If you have 0 pitch at mid stick but are not getting an equal pitch range you need to adjust the servo to swash links (raise or lower the swash). Don't forget to set the phasing unless you have the new style head block of course. This should help if you get stuck http://helituning.com/index.php/vide...-overview.html. __________________ "Sort your head out and fly with your heart" Trex 450 SE V2: 9257 tail, Spartan Quark, HS65mg cyclic, DX7-AR7000, NEU 1107h/2y, Jazz Esc, Trex 550 FBL: Jive 100+LV, KDE/NEU 1907H/1/N42, Vbar 5.3, Futaba BLS 251

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03-06-2011, 02:28 PM	#2
ourbail Registered Users Join Date: Feb 2009 Location: Bay Area	no way that can happen double check radio that u are in 0 pitch at mid,u can take blade off and put a driver thru the grip and that will also show if u are off,,recheck link and make sure swash is level and horns at 90

03-06-2011, 08:07 PM	#4
bad007 Registered Users Join Date: Nov 2009 Location: New Brighton, PA	It sounds like the servo horns where installed before you had the throttle at mid stick. Initial setup- linier pitch curve 0 25 50 75 100, 50% throttle, no sub trim, no TX trim install horns as close to level as poss, level with subtrim. Take it from there, the link measurments get you at best close.

03-07-2011, 09:12 PM	#5
cozmokramer Registered Users Thread Starter My HF Map location Join Date: Aug 2008 Location: USA, New York, Orchard Park	thanks for all the help. Bad007 you hit the nail on the head. thanks