- Joined
- Jan 22, 2009
- Messages
- 2,152
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Just messing around today working on some different techniques with stuff. I was able to get the double hammer more vertical through the second pivot rather than it rolling left and looking so much like a spin through the second pivot. The timing of the forward stick input has a lot of effect. Start it like a regular hammer, but kick a little positive and about 3 seconds earlier than you would for a near dead stop hammer. Apply the usual right aileron but no forward stick until the first pivot reaches about 45 degrees short of vertical down. Then apply full forward stick while keeping the right aileron in. Then just hold that until it comes back around.
In my plane, if you wait until 180 degrees of pivot is done before applying forward stick, it will have rolled nearly wings level at the 270 degree rotation point and the 2nd hammer will look sorta like a spin. If you wait too late to kick, it'll sorta tail slide and flop around ugly on the 2nd hammer. The forward stick input here tucks the nose under a bit on the way back up, but gets it back on plane pretty decent for the last 180 degrees of rotation. I'm not sure if a perfect pinwheel rotation can be done through the whole thing in my airplane. Give it a try - lots of fun.
I was also messing around with some spiraling towers (2nd clip below) and trying to smooth out the transition into the descending spin. As it starts to descend, I'm leaving the elevator neutral instead of pulling it back. This lets it go clean into an accelerated flat spin without the nose bobbing up and down so much. Spin rotation is better and more even too. With the Catto prop, it won't flat spin in a level attitude even with full aft stick and full power, so I'm just trying to make the spin cleaner.
Also, for normal competition spins, if your airplane doesn't spin cleanly, apply some in-spin aileron simultaneous with the initial rudder input. This really cleans up the spin rotation in mine. With neutral aileron, the spin will slow a bit between 1/4 and 1/2 turn, then pick back up. Aileron can smooth it out and make it look better if needed.
[ame="http://www.youtube.com/watch?v=XYBUlgW1fdI&list=UUm9cBvavbT4j6vReBu9H8Qg"]http://www.youtube.com/watch?v=XYBUlgW1fdI&list=UUm9cBvavbT4j6vReBu9H8Qg[/ame]
In my plane, if you wait until 180 degrees of pivot is done before applying forward stick, it will have rolled nearly wings level at the 270 degree rotation point and the 2nd hammer will look sorta like a spin. If you wait too late to kick, it'll sorta tail slide and flop around ugly on the 2nd hammer. The forward stick input here tucks the nose under a bit on the way back up, but gets it back on plane pretty decent for the last 180 degrees of rotation. I'm not sure if a perfect pinwheel rotation can be done through the whole thing in my airplane. Give it a try - lots of fun.
I was also messing around with some spiraling towers (2nd clip below) and trying to smooth out the transition into the descending spin. As it starts to descend, I'm leaving the elevator neutral instead of pulling it back. This lets it go clean into an accelerated flat spin without the nose bobbing up and down so much. Spin rotation is better and more even too. With the Catto prop, it won't flat spin in a level attitude even with full aft stick and full power, so I'm just trying to make the spin cleaner.
Also, for normal competition spins, if your airplane doesn't spin cleanly, apply some in-spin aileron simultaneous with the initial rudder input. This really cleans up the spin rotation in mine. With neutral aileron, the spin will slow a bit between 1/4 and 1/2 turn, then pick back up. Aileron can smooth it out and make it look better if needed.
[ame="http://www.youtube.com/watch?v=XYBUlgW1fdI&list=UUm9cBvavbT4j6vReBu9H8Qg"]http://www.youtube.com/watch?v=XYBUlgW1fdI&list=UUm9cBvavbT4j6vReBu9H8Qg[/ame]
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