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3D Rebirth of a Yak

Daytonarc

70cc twin V2
The top of the engine protrudes from the bottom of the cowl but in order to get good airflow over the rest of the cooling fins I decided to baffle the engine so that all of the air entering the front of the cowl is forced through the cooling fins.

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Daytonarc

70cc twin V2
Throttle and choke servos installed. I used all JR 8711s for flying surfaces but used Savox 1257TG for throttle and Savox 0254MG for choke.
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Daytonarc

70cc twin V2
The rebuild included replacing the stab tube with a carbon fiber tube, replacing the tail wheel bracket with a carbon fiber one and changing from double rudder servo to a single 8711. This resulted in the (2) 2500 mah A123 batteries needing to be above the rudder servo in order to get the cog correct. Made a removable battery tray with 3 rows of Velcro slots for fine tuning cog.

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Daytonarc

70cc twin V2
The plane has been basically ready to re-maiden since my last post except for some final tuning of the engine and some throttle linkage adjustments. With life's other commitments not much happened for a while. Finally made the adjustments and yesterday @Flying-Skunks came over to help with the fine tuning of the GP 88 Evo (Thanks Donnie)
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. Today my Son got to maiden his newly rebuilt 33% Yak and it flew like it was on rails.:brian-banana::woohoo!:
 

Daytonarc

70cc twin V2
The club member who gave my son the wrecked airframe told me "I'll never see that plane fly again". I told him he was wrong. Unfortunately Ed, the club member, was killed in a motercycle accident before the plane flew.


It is fitting that the first flight was on Memorial Day.
 

rcbobp

70cc twin V2
What an awesome rebuild. I wish I had access to someone like you to teach me building (and rebuilding) techniques. I hope Scotty enjoys for a long long time!
 
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