Comp arf spark (Turbine Version)
 

Guys,

I am thinking of getting the Comp Arf Spark and putting a wren 44 gold in it. Just wanted to see what if any mods you guys did that have made them turbine. Any areas to add strength ect ect..... Want this to be my every weekend stress free jet... Oh yea is the tank from composite arf alone good enough time wise for the 44

David

RE: Comp arf spark (Turbine Version)
 

David,
The Carf tank holds 44oz. which will be plenty. If you search turbine spark maiden you will find quite a bit of info on mine. Dave Wilshire built the first one and gave me some good suggestions. I made no structural changes to the airframe. The main difference is the wheels and brakes. I used Titanium main legs from Central Hobbies and Tams lightweight w/b combo which saved quite a bit of weight. mine is 10.5# dry W/P-60 and an additional 12oz tank. I am using 8mm of flapperon which required a little up trim. Speed brake does not affect pitch. If you set up flight mode for flapperon you can trim in the air for pitch. If you have any more questions post them and I'll share my experience. CG, Throws etc...I have about 40 flights on mine and she's dialed!

Todd

RE: Comp arf spark (Turbine Version)
 

David

Like Todd says, no mods are required to the structure, cut the EDF inlets back enough to get the tank in and you are away. You can use the EDF fan mounts to take the turbine (with spreader plates).

I have two people doing 44 conversions and Comp ARF have a demo plane set up this way (oh and Wren!)

Great flying aeroplane. There is a review in the next JetPower mag of the EDF model.

Dave Wilshere