REFLECTOR: Pitch buck

[John Abraham]

Ron,

Do you have VG's on the canard and main wing?  Sometimes you can get it to just descend at about 800-1000 fpm if you do. The canard sits on the edge of stall. If you pump the stick though and "aggravate" the stall then it should pitch buck. 

One other thing to check is your elevator throw. You should have 22 degrees trailing edge up and 26-28 degrees down from neutral with the canard tips. If you are achieving over 28 degrees you are stalling the canard and it won't pitch buck since it will be continually stalled. 

You should achieve a stall around 65kts normally with an XL. What is the weight of the plane when you are flying now?  You can tell when you are near aft CG because the plane will feel pitchy. 

Fly safe,

John

On Aug 12, 2012, at 11:23 AM, Velocity <velocityxl at fastmail.fm> wrote:

> I did a few stalls this week end and found that my plane does not relly do the pitch buck the
> trainer did . Now the trainer is the small plane and mine is the xl fg. so maybe that is the differance
> and when I did the training there were two people in the plane and I was doing the stalls with just me.
> What I did was climb to 6k slow the plane to 58 knots and it would just start to lose altitude no pitch buck no matter how hard I pulled on the stick. Is this normal?
> 
> Ron
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