YAK 130
BVM ©2016 55 Mar. 23, 2016
First Flight Profile
Fuel System Check
Shipping and handling the model can sometimes result in the fuel pick-up clunk(s) getting
stuck in the forward end of the fuel tank(s).
Hold the model nose up and shake it a bit. You should be able to hear the clunk tapping the
aft end sides of the tank(s) as it should.
Remove the flush mounted over flow plug. Test fill and empty the tank(s) with fuel and note if
the tanks are bulging or sucking in more than just a small amount. If the fuel is not flowing
freely, there may be a restriction. Check it out before flight.
The fuel filter should be mounted in a vertical position to allow any trapped bubbles to flow
through on the first power up.
Flight Time
The BVM demo model’s transmitter timers are set for 6 min. On the first flight, land one
minute early to check fuel consumption. Adjust the flight timer accordingly.
Taxi Test/Engine Run Up
A taxi test should include a radio range check with the engine running at various power
levels. Check that the wheel brakes are adequate and the stopping action is without skidding
or pulling left or right. Be sure to shake the aircraft and push fore and aft with the engine at
half or more power, this will help remove any trapped air bubbles in the fuel system.
Gyro
Refer again to “Gyro Sense” on page 51.
It is BVM’s practice on a first flight, to take-off with the transmitter 3 position gyro assigned
switch in the “OFF” position.
Takeoff
Begin the takeoff roll by slowly advancing the throttle. The YAK 130 will lift off with very little
up elevator. It there is a crosswind, hold a small amount of aileron into the wind and apply
opposite rudder as required.
Trim
Once in the air, establish a medium cruise speed to set the trims. The aircraft should fly
straight and level when “hands off”. When the flaps and landing gear are extended, a few
clicks of up trim maybe required.
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