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Extreme Flight 76/83" MXS

AKfreak

150cc
I have three rates. On high 100% on dual rates rates and 106% travel adjustment I achieve max deflection (87 ish degrees). Then middle rates, I have dual rate set to 75%, and on low rates I have DR set to 50%.
 
When I had to replace a elevator servo I dialed my high rate back to 75 degrees or so. At full deflection I am afraid of a cam over like that happened to my 78 and I found that I did not use it. I mostly do down elevator tumbles so that rate is more important to me.
 

AKfreak

150cc
I am not near cam over, I am only at 106% of 150% of available range of motion. Also the arm geometry looks good to me.

Btw I assume you crashed on an elevator cam over. Do tell what happened.
 
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I told the story a few times on the various threads. I installed the elevator servos per the manual with the splines aft and put on 2" arms. When full down the linkage was close to flush. A few times on the bench while setting it up the recoil from a full down would cam over the linkage. I backed the end points way down to stop this from happening and figured that under air load this would not happen.

Well on the maiden day it was stupid windy. Like 20-30 mph winds. Late in the season you just have to suck it up around here. Well doing a waterfall one of the side camed over from the wind shift. The plane does not fly well with one elevator half jammed full down. If I had more altitude I could have just kept flying in inside loops uptil it unjammed. I have it mostly on video actually, but I cringe at ever watching it again.

I got another one and installed the servos spline forward like the other 3 people have up here and have no issues. Manuals are not perfect for sure. Hence why Patrick figured out the geometry on this plane and I will be diving into the new 74 laser tomorrow on this front.
 

AKfreak

150cc
I set mine up with the servo offset facing forward and the arm 90° to the servo facing upward. the turnbuckle is close to the bottom of the horizontal stab, but it clears it nicely.

How are you digging that new Laser? I think they are beautiful, as a matter of fact my first RC plane was a Carl Goldberg Laser and its beautiful too.

Now I off to work on a ton of wrinkles in my Fuse. My other planes are kept in the same space and don't wrinkle like the EF does. Strange, strange indeed.
 

AKfreak

150cc
Well I got the wrinkles off of my fuse, but I had a minor mishap. I burned a hole the size of a pea (plus two baby ones on the side) in the bottom of my right elevator. My wife came in to the garage and started talking, but I had the headphones in. I shut down the heat-gun, popped out the ear bud and talked to her.

When I started again, I accidentally put the heat gun on High heat... Doh! That is a huge mistake, not 2 seconds into the heat application, it shrunk the wrinkle and a hole the size of a pea appeared. Man that SUX! Now I get to buy a whole roll of covering to match that blue.

I guess I should get all three so I can seal the hinge line too. I guess I will call that the $100+ for a pea hole. Oopps.. live and learn. I searched the build manual and looked for the Ultracote color numbers but didn't see them. Any idea of what I need to buy?


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