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Old 06-25-2021, 11:37 PM
TerryAir3D is offline
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Can't do Crankshaft

I've been trying to do crankshafts and the plane wont do it. I have max throws but the plane wont do it.

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AJ 73" Raven
DA-35
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Old 06-26-2021, 08:33 AM
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They're get'n lower mate.....
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Same as getting a plane to tumble ........move the CG more rearward
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Old 06-26-2021, 02:48 PM
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I sponser JR
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I have several different planes, sometimes slowing down the entry speed helps also reduce control in put also helps, apply power after in crankshaft for more crowd wow
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Old 06-27-2021, 12:09 PM
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Quote:
Originally Posted by TerryAir3D View Post
I've been trying to do crankshafts and the plane wont do it. I have max throws but the plane wont do it.

Other info:
AJ 73" Raven
DA-35
The plane will do it, no doubt. I’ve seen one with the exact setup you have, the only factor I don’t know is which wings he was using. Pretty much any modern airframe will do it, if your throws and cg are even remotely close to optimum. Do you fly on Realflight? I can send you some stick videos to help out, if you want me to. Or watch Jase Dussia’s Extra NG Stick video, he does it there. Hope this helps
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Old 06-29-2021, 08:10 PM
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Originally Posted by TerryAir3D View Post
I've been trying to do crankshafts and the plane wont do it. I have max throws but the plane wont do it.

Other info:
AJ 73" Raven
DA-35
That plane will DEFINITELY do it, and it'll wrap up pretty nicely on the right inputs. Normally in may case I've found doing them, you want moderate speed (NOT WFO), and high rates. You'll enter like a negative snap (left aileron, about half stick or so, maybe less), and full forward elevator, and about a 1/3rd RIGHT rudder. When it starts tumbling, come out of the aileron and rudder, leave forward stick in, and add a little left rudder. Some planes may need a little left aileron in them to keep it going. You can either recover by releasing sticks, or stuffing left rudder and aileron and transitioning to a rifle roll exit (high roll rate start and level continuous roll). Or any other combination in between! I've found myself exiting into a harrier before, or doing a transitional crankshaft (too complicated to explain lol, go watch Rob Holland do a 4 minute free and you'll see an inside to outside tumble, that's what I'm talking about).
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Old 06-30-2021, 01:50 AM
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What is a crankshaft?
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Old 06-30-2021, 05:43 AM
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BoneDoc's 3D Clinic - Episode 24: Lomcevak / Crankshaft (3 min 56 sec)
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Old 06-30-2021, 06:10 AM
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Quote:
Originally Posted by Josh M View Post
That plane will DEFINITELY do it, and it'll wrap up pretty nicely on the right inputs. Normally in may case I've found doing them, you want moderate speed (NOT WFO), and high rates. You'll enter like a negative snap (left aileron, about half stick or so, maybe less), and full forward elevator, and about a 1/3rd RIGHT rudder. When it starts tumbling, come out of the aileron and rudder, leave forward stick in, and add a little left rudder. Some planes may need a little left aileron in them to keep it going. You can either recover by releasing sticks, or stuffing left rudder and aileron and transitioning to a rifle roll exit (high roll rate start and level continuous roll). Or any other combination in between! I've found myself exiting into a harrier before, or doing a transitional crankshaft (too complicated to explain lol, go watch Rob Holland do a 4 minute free and you'll see an inside to outside tumble, that's what I'm talking about).
What he said. You absolutely nailed it, that’s exactly my inputs. With virtually any aerobatic airplane with decent throws and power I’ve tried, it works! The key is right rudder as you start, and transition it to a little left. Once you have it, it’s no sweat. If you go in inverted, I start with left rudder instead of right. For some reason that works.
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