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| The Dumb Thumb & The Funky Chicken It happens to the best of us! Discuss your balled up wrecks here. Airplanes and Heli's. |
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01-02-2007, 02:32 PM
| #1 (permalink) |
| Uber Contributer   Join Date: Jan 2006 Location: las vegas nv Age: 72
Posts: 176
 |  Rise and fall of my 40% Yak54
Flew my Aerotech 40% Yak 54,first five flights were fantastic,got it all trimmed out,got the mixes dialed in,(at least my buddy did all that). Anyway did the flying for the day, came out the next day. Flew a flight,then some of the locals wanted thier turn, along about the third pilot it happened. He did an up line rolled it inverted,and came back across the field and the rudder started ocillating back and foreth.rolled to a knife edge,rudder still going back and forth,and went in at a 45 deg angle    . After picking up the pieces,took it home and checked it out,darn,EVERYTHING was working!! After the crash we checked the freq with a checker and no signals were showing on my freq. So who has any ideas?? Radio is JR 10x,rx is 2000 dial a freq,batts were 4800 lipo,and 6600 lipo on rx and 2400 on ign. Here are a few pix. Oh yea had new 3W157 for power. Not to worry,I already have new one on order.
__________________ sukhoi, too old to huck. What do I need a 3D plane for? I am only a 1D flyer |
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01-02-2007, 02:36 PM
| #3 (permalink) |
| The Dominator  Join Date: Jan 2006 Location: FL Age: 18
Posts: 310
| Re: Rise and fall of my 40% Yak54
Warren, very sorry to hear this.. man this is just plain "Sick"!! Don
__________________ Stephen Hamilton Team Futaba 3W-Cactus Aviation Team Dalton Aviation Competition Airframes Fromeco Scale Aviaonics 3DHobbyshop.com Hacker Brushless Motors |
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01-02-2007, 02:36 PM
| #4 (permalink) |
| Thanks for the Support!   Join Date: Jan 2006 Location: Cleveland, Ohio Age: 37
Posts: 13,517
| Re: Rise and fall of my 40% Yak54
How many servos did you have on that MASSIVE rudder? I would hope at least 3, or a BIG SEIKO? Sorry for the loss, thats terrible.
__________________ BUILDING SEASON IS HERE!! Break out the glue sand paper and covering iron!! whoO hoo!  |
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01-02-2007, 02:56 PM
| #5 (permalink) |
| Uber Contributer Join Date: Jan 2006 Location: las vegas nv Age: 72
Posts: 176
| Re: Rise and fall of my 40% Yak54
Thanks for the condolances,Sleepy had 3 8611a on rudder,with swb self adj tray,2 on each ail,one on elv(dont need all that extra stuff) like my avatar says I am only a 1d pilot.
__________________ sukhoi, too old to huck. What do I need a 3D plane for? I am only a 1D flyer |
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01-02-2007, 03:03 PM
| #7 (permalink) | |||||||||||||||
| Thanks for the Support! Join Date: Jan 2006 Location: Cleveland, Ohio Age: 37
Posts: 13,517
| Re: Rise and fall of my 40% Yak54
Hmmmm.... this is interesting. once again... Sorry for the loss.
__________________ BUILDING SEASON IS HERE!! Break out the glue sand paper and covering iron!! whoO hoo! | |||||||||||||||
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01-02-2007, 03:34 PM
| #11 (permalink) |
| Bad-ass Super Contributer!  Join Date: Jan 2006 Location: Florida Age: 23
Posts: 313
| Re: Rise and fall of my 40% Yak54
Did you roll the airplane to knife edge and at what point in that short time did you loose controll of the plane. Did you loose complete controlle as in PCM lockout of did you get some kind of radio glitches. All these answere may be able to leade you closer to what happened. I know when I first flew my 40% yak I had a little tail wag, this was easily solved by making the rudder cables tighter and never had the problem again.
__________________ Lets keep this on the down low ...HOW YOU GET THE BEANS ABOVE THE FRANK... Full on hucker of anything that flies - especially OPP |
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01-02-2007, 03:46 PM
| #12 (permalink) |
| In The Box  Join Date: Mar 2006 Location: bloomingdale, IL USA
Posts: 754
| Re: Rise and fall of my 40% Yak54
Hey Warren, it's a bad day indeed. The only thing I can think is the first few flights is your new rudder cables will probably stretch the most. Then if your horns in the rudder are too short you wouldn't have enough leverage to keep that rudder from fluttering...Just a thought. Sorry |
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