Fancy Foam MX2 by RJ Gritter - Page 67 - RC Groups
 Dec 14, 2012, 04:43 PM Custom User Title So, I don't want to use big servo arms... got it. I'll just use the stock ones I am also definitely going to do everything I can to save weight.
 Dec 15, 2012, 03:29 PM Custom User Title One more thing, about the offset differential arms, how do they work/why do you need them?
 Dec 15, 2012, 03:39 PM I don't want to "Switch Now" The offset arm is done to eliminate the differential that would occur because of the way the pushrods angle out away from the servo. With the arm on the top like this model they will move more up than down. Without them you will get more throw one way than the other and the rolls will not be axial. So you only need them if you don't want the plane to roll properly To get an idea how they work, imagine an extreme case with the pushrods out 90 degrees to the output arm. The control surface would only move up! The idea is to get the line from the axis of rotation of the servo out to the hole in the arm to be at right angles to the pushrod. That gets you close to equal throws both ways. Not quite. but close. Pat MacKenzie
Dec 15, 2012, 04:47 PM
Custom User Title
Oh, thanks! Do the servos come with them or do you have to buy them?
Quote:
 Originally Posted by pmackenzie The offset arm is done to eliminate the differential that would occur because of the way the pushrods angle out away from the servo. With the arm on the top like this model they will move more up than down. Without them you will get more throw one way than the other and the rolls will not be axial. So you only need them if you don't want the plane to roll properly To get an idea how they work, imagine an extreme case with the pushrods out 90 degrees to the output arm. The control surface would only move up! The idea is to get the line from the axis of rotation of the servo out to the hole in the arm to be at right angles to the pushrod. That gets you close to equal throws both ways. Not quite. but close. Pat MacKenzie
 Dec 15, 2012, 04:50 PM I don't want to "Switch Now" You either have to buy them or make your own, they don't usually come with servos. The kit might come with them, some do. FF mentions supplying them in their kits in the ad: http://www.fancyfoam.com/index.php?m...products_id=69 You attach the offset arm to a stock arm. I use CA glue and some Kevlar thread wrap Pat MacKenzie
Dec 15, 2012, 07:59 PM
Custom User Title
Quote:
 Originally Posted by pmackenzie You either have to buy them or make your own, they don't usually come with servos. The kit might come with them, some do. FF mentions supplying them in their kits in the ad: http://www.fancyfoam.com/index.php?m...products_id=69 You attach the offset arm to a stock arm. I use CA glue and some Kevlar thread wrap Pat MacKenzie
Cool.
 Dec 18, 2012, 12:50 PM Registered User hey guys i just ordered my first vpp setup for my son from the fancyfoam website. i'll be building it soon but i'm already thinking ahead to what i think is going to be the trickiest part. radio setup. can anyone send me a link to a video/thread/post that can give a first timer some tips for basic setup? i have a dx8 and of course would love it if i could find a dx8 model file that i could download/import and just modify. any tips you guys have would be great k.t.
Dec 18, 2012, 11:51 PM
"Free" in Christ! #F3P
Hope this helps,

Free

 Aurora9 VPP (Variable Pitch Prop) Setup (6 min 38 sec)
Dec 19, 2012, 08:03 AM
Registered User

# thanks

thanks a bunch. that will get me started on the right track. looks like i should call on my heli friends when i start setting this up!
thanks again,
k.t.
Quote:
 Originally Posted by Free Hope this helps, Free http://www.youtube.com/watch?v=EVSnY...eature=related
 Dec 19, 2012, 10:01 AM Custom User Title hmm, service unavailable! Can't see it!
 Dec 19, 2012, 10:08 AM "Free" in Christ! #F3P Google the name? Free
 Dec 19, 2012, 04:31 PM Custom User Title Never mind, the school network just figured out how i got onto YouTube...
Dec 26, 2012, 08:17 AM
Registered User

# build video for the mx2?

hey guys, has anyone made a good build video for the mx2? i'll be starting on my build during the next few weeks and i usually like to watch build video a few times before i build anything. i looked in this thread but didn't see one.
k.t
 Dec 26, 2012, 09:06 AM Registered User
 Dec 26, 2012, 09:50 AM "Free" in Christ! #F3P I have not seen a free build vid for the MX-2, look at the link for some similar videos, the manual is good. Free http://tasfoamies.webs.com/buildvideos.htm