Tag Archives: yak-55

Yak-55 with 3 Bladed 15×8 Prop

3 Blade EP Propeller 15×8 / 381x204mm

Just received my 3 bladed prop shipment today and I immediately tried it out on my Yak-55. I spent approx. 20-30 mins shaving 2 of the 3 blades to obtain a balanced blade since it ain’t perfect out of the factory.

I hooked up the WATTS UP meter and recorded the following readings. Specs as per below:

  1. SWANG 480Kv Brushless Motor + 80A 5A BEC ESC 158U
  2. RHINO Battery 3700mAH 5S1P 20C
  3. 3 Blade EP Propeller 15×8

Max Amp: 57.74
Wp: 1110.9
Wh: 1.5
Vm: 19.13

Specs look ok for the system so will test out the flying performance soon!

Yak 55 Maiden Flight

After a period of slightly over 1  month, I finally managed to put all the needed parts together for my Yak-55. The maiden flight was successfully flown on 21 Feb 2009 under the watchful eye of my flying buddy who was well versed with the plane (seeing that he was the one who influenced us all and showed us how nice this plane flies). This plane is fully 3D capable and I hope to be able to execute some nice clean maneouvers in time to come.

Here are some pictures of my Yak-55, which is basically a 50 sized plane with the following specs:

  1. Wingspan – 58″
  2. Fuselage Length – 59″
  3. Wing area – 713 sq inches
  4. SWANG 480Kv Brushless Motor + 80A 5A BEC ESC 158U
  5. RHINO Battery 3700mAH 5S1P 20C
  6. TGS Sport 16x10E Precision propeller
  7. 4  x Align Digital Servos

Current Draw:

Amp Hours: 0.152 Ah
Max Amp: 52.08
Wp: 923.3

 

Forum Details at: http://www.rcbuddies.com/forum/index.php/topic,198.0.html