WhirlingBladesOfDeath
04-17-2008, 03:40 AM
I finally got all my parts together and converted my Hurri to flybarless using the new SK-360 Digital Flybar. http://www.digitalflybar.com/
First I removed everything to do with the flybar, yea! I had to leave the washout connected to keep the linkages square and in phase when the head spins up.
To reduce the throws, I did two things. First I drilled new holes in my ReadyHeli CF control arms. I used a pre-drilled plastic control arm as a template, screwing it to the CF arm and drilling through one of the existing holes. Below are a couple of pictures of it before, during, and after. This way I was able to drill all three arms at exactly the same place and move the balls in closer to to the servo which reduces the overall throw. I also got the main rotor grip linkage balls from a Trex 500, which extend significantly further than the stock balls. In some of the pictures below, you can see them attached to the Gaui main blade grips, and how well they work for this purpose! Between the two, I was able to get proper collective (+/-12) and cyclic (+/-8) throws with the swash mixing set to 50% on the SK-360. I think ideally they want it 60% or higher, but that was the best I could do with mostly a stock head.
Going through the software setup was pretty much a breeze. The instructions do a good job walking you through the initial setup, and probably took me about an hour of tweaking the settings to get everything lined up, square, and working just right. Moving the heli around by hand, the unit is responding spot on. Basically it will move the swash opposite of your movement, and then very slowly return the swash back to neutral.
I'm leaving a lot out, but it's late and I need to go to bed. I need to be well rested for the maiden flight tomorrow (I hope). It'll be interesting trying to fine tune it, and see how it really flies!
Thanks,
Jason
First I removed everything to do with the flybar, yea! I had to leave the washout connected to keep the linkages square and in phase when the head spins up.
To reduce the throws, I did two things. First I drilled new holes in my ReadyHeli CF control arms. I used a pre-drilled plastic control arm as a template, screwing it to the CF arm and drilling through one of the existing holes. Below are a couple of pictures of it before, during, and after. This way I was able to drill all three arms at exactly the same place and move the balls in closer to to the servo which reduces the overall throw. I also got the main rotor grip linkage balls from a Trex 500, which extend significantly further than the stock balls. In some of the pictures below, you can see them attached to the Gaui main blade grips, and how well they work for this purpose! Between the two, I was able to get proper collective (+/-12) and cyclic (+/-8) throws with the swash mixing set to 50% on the SK-360. I think ideally they want it 60% or higher, but that was the best I could do with mostly a stock head.
Going through the software setup was pretty much a breeze. The instructions do a good job walking you through the initial setup, and probably took me about an hour of tweaking the settings to get everything lined up, square, and working just right. Moving the heli around by hand, the unit is responding spot on. Basically it will move the swash opposite of your movement, and then very slowly return the swash back to neutral.
I'm leaving a lot out, but it's late and I need to go to bed. I need to be well rested for the maiden flight tomorrow (I hope). It'll be interesting trying to fine tune it, and see how it really flies!
Thanks,
Jason