Nose up?
 

I had a lot of fun with the nitro guys on the track during a practice session a week ago.
For some reason, on most jumps my Truggy raised the nose up way to far and I had to level it using the breaks. Something might changed on
my setup w/o my notice, could be other reason or failure.
Any idea how to change my Truggy behavior so it will fly level again?
Here is a video of the practice session, my Truggy has the black wheels.

http://www.youtube.com/watch?v=Fv1uH9xVbtc

Practice your let off timing. By the video it sounds like your not letting off the throttle at the right time. In other words your still throttling through out the ramp into the jump. There were a few times where you got it just right and at least it appeared that you didn't brake. I don't think you need to rearrange your susp it looks like that is pretty dialed. Just practice on the timing of your finger to jump. You should be able to get the right amount of throttle to clear it without having to gun it into the ramp so that your nose goes up as if to do a back flip.

Trust me if I goof before a jump and I have to basically gun it to clear something I look exactly like you. Straight up. But if you don't need to gun the jump you should be able to get the right speed and just let off sooner to clear it level.

I agree it looks like a timing issue with your throttle finger. About 1:45 in I could clearly hear your truck, you stab the throttle hitting the face of the jump. You need to either let off as your hitting the jump or roll through the jump with a steady throttle input, really depends on the jump angle and the angle of the downside ramp. I have been racing off road for two years and my track has had a wide variety of jumps, some I can hit wide open, some I have to let off for and some just flow perfect with the speed for that section of the track.

Watch the buggies in the vid. You can hear them a lot more clearly than your Truggy. Listen to their throttle as they go over a jump. Compare that to yours. Notice the one instance around 4.18 one of the buggies gets hung up and throttles hard to clear the jump, looks a lot like you.

Your right on at 2.04 though

Thanks for your great comments; I was right, it is a setup issue...
I recently changed my motor and gearing to be much faster.
I never had any issue to fly leveled with my "slow" setup.
Seems like I'm still pressing the throttle hard to compensate the slow speed that I had before.
So now I have two options: Return to the "slow" setup or practice the throttle timing for my new gearing and motor.

Thanks again for great comments, you helped me to figure it out (I had no clue that the speed gearing can affect my jumping), please correct me if I'm wrong.