View Full Version : Sceadu 50 Pitch setup
Matutu
12-28-2007, 07:21 AM
I have a Sceadu Evo 50 which i have been flying a few months now at +12 -6 pitch and now im after more negative pitch and i have been sat here most of the morning trying to figure out how to gain this. I have my travel ADJ at full movement to the limit of the servo and i can just not gain over +12 -6.
This is at Full Negative stick (-6)
http://img265.imageshack.us/img265/9567/28122007019oq2.jpg (http://imageshack.us)
This is at middle stick ( Zero Degree)
http://img247.imageshack.us/img247/7489/28122007021nt5.jpg (http://imageshack.us)
This is at full Positive pitch (+12)
http://img265.imageshack.us/img265/8039/28122007020gx8.jpg (http://imageshack.us)
If anyone could please offer some advice i would appreciate it.
BarracudaHockey
12-28-2007, 08:23 AM
There's setup info in here
http://www.rcuniverse.com/magazine/article_display.cfm?article_id=890
If you have your linkages and collective throw set up correctly you can get +- 11 no problem.
mudbogger2
12-28-2007, 03:33 PM
The links I circled in red should have a long and one short link. You have 2 long links on them.
The links circled in pink are the short links that shoud be long ones.
All you arms should be level at zero pitch also.
BarracudaHockey
12-28-2007, 06:58 PM
Yep, good catch, the double links use one large and one small.
The other thing that gets people in trouble is the lower jesus bolt. The bolt head should be inline with the upper jesus bolt, if the bottom jesus bolt is 90 degrees from the top one its in the wrong hole and that will give you fits with your linkages.
tz250w
12-29-2007, 04:58 AM
You should probably recheck your manual. I can't tell for sure from the pictures but it appears you have the pivot points on the seesaw on the outer holes which if I'm not mistaken is the "stability" setting. There are several points in the build you can choose from. You'll want to make sure those are all set for perfomance...
I have mine +12 and -10 (3D mode) with room to play with.
tz250w
12-29-2007, 05:21 AM
There's setup info in here
http://www.rcuniverse.com/magazine/article_display.cfm?article_id=890
If you have your linkages and collective throw set up correctly you can get +- 11 no problem.
Saw your screen name in the review video... You da pilot?
Matutu
12-29-2007, 11:04 AM
Ok thanks guys, special thanks to "mudbogger2" for taken the time to do that picture GREAT HELP.
I have now fixed the issue of the pitches not matching and i am now running +-10, but i cant seem to get anymore im running a large servo horn and my ADJ's are maxed out and still i cant get near +-12 :( Any ideas?
tz250w
12-29-2007, 08:59 PM
:( Any ideas?
Maybe time for some more pictures? Did you check the manual to see if you are using all the performance choices?
I don't think increasing the diameter of the servo horn radius (over standard) is the answer, unless you want to start munching servos.
Do you have anything binding? Is the radius block too low on the main shaft?
Other than that I'll need another cup of coffee before my brain can spit out any more "ideas". :o
Out of curiosity, why do you need -12? If you are throwing the heli around in 3D where you can use that much pitch I'd recommend upgrading at least to a metal washout, radius block, aileron / pitch linkage arms and maybe stiffer dampers. Also keep a fresh supply of blade grips handy. The bearings will begin to chew into their holes.
I always set up my machines to have all the arms (washout and mixing) at 90º to the mainshaft when at mid stick. I also try and get the swash mid travel with the stick centered as well. Then 0º pitch should be pretty easy to get with everything else set up right. Once you have that, most modern helis will have well over 20º total pitch range.
This part of the setup can be the most time consuming, but is well rewarded if done correctly.