Slope Aerobatics with Le Fish “Light”

Slope Aerobatics with Le Fish “Light” from Dawson Henderson on Vimeo.

Dawson is really pushing the limits now… using a new pulley setup he came up with, he was able to get greater than 90* travel in one direction and found that he really liked the result. He’s going to modify his setup to use a larger drive wheel on the servo so that he can have more than 180* of total elevator rotation.

Here’s the original RCGroups post debuting Dawson’s pulley setup and his description of how it works, along with some photos:

“I used the 1.5 to 1.0 ratio to get the 120° to 180° movement on the elevator. I used the large servo horn/wheel as the “core” of my servo pulley. It measured 15/16″ in diameter… so I made the stab pulley 5/8″. That seem to work fine… I ended up with 180° of throw on the stab.

However next time I might go a bit larger on the servo pulley so I could be sure I got at least 90° each way and maybe a bit more. I was really enjoying the 100° throw on my UP elevator (only 80° on down); before I balanced them out to 90-90.”