RCU Forums - View Single Post - Looking for advice
View Single Post
Old 06-07-2010 | 11:08 PM
  #10  
D.L.R.
Member
 
Joined: Sep 2007
Posts: 94
Likes: 0
Received 0 Likes on 0 Posts
From: Lone Tree, IA
Default RE: Looking for advice

This was an ARF (ha ha) and it was put together with tender loving care 'cause I KNEW it was going to be fun. I was actually surprised at the minimal amount of positive incidence of the wing relative to the horizontal stab for this type of plane, but left it alone. I did at one point in time shim the leading edge of the wing up about an 1/8 inch, with no real big change in how it handled, altho it did seem to climb a bit more than before, and when it decided to go down it still went. After reading your post, I checked out the "levelness" of the stab with the wing AGAIN, and they are very close to 0 incidence, with the wing slightly more positive which seems normal to me. The other area I had corrected some time ago was some up thrust in the engine, I shimmed it to 0 relative to the bottom of the wing. I believe that along with throttle management made the most difference but IT STILL SUCKED!!!!
As far as the control surfaces, I've cut the elevator back from 3/4 inch throw (I like TIGHT loops) to 1/2 inch, plus I've got Expo. (won't even try to spell it) working for me too.
My manual also says balance at 3.5 to 3.75 from the L.E., I just use my fingers, but it's right in the middle of my fore and aft marks on the wings. I did add "some" weight when putting it together. There places that were in bad need of more glue, mostly I used CA to make it easier so it didn't add much. Also the push rods for the rudder and elevator were 3 sticks and 6 rods exactly like my Senior Telemaster which gave me fits due to elevator "flutter" so I modified the elevator by connecting the 2 halves with hard wood (MAYBE an ounce) and used Nyrod. The Nyrod was one of the first things I checked after the first flight thinking they might be flexing, NO WAY.
I really appreciate you guys trying to help and I believe you have, it'll be a few days, but I'm at the point I think it's basically balance, and I'm going to move the batteries forward (if I can) and if that doesn't work I'll move them back (if I can), and if I can't move the batteries I'll stick on a little weight and see what happens.
My Sr. Tele and Rascal are just fine so if I break this little sucker it won't be the end of the world.
Again I thank all of you for the info.

Dan

I was told when getting my private license years ago there are 3 things in aviation that are ABSOLUTELY WORTHLESS-

THE RUNWAY BEHIND YOU,THE AIR ABOVE YOU, AND THE GAS YOU LEFT ON THE GROUND.