quote:

ORIGINAL: awry

Thanks. I was originally planning on getting the black scheme but a friend of mine already got that so I decided on the AJ scheme since he's one of my favorite pilots.

I only have cooling intake from the belly pan atm. Everything is cool but it's still winter over here. We'll see in the summer if it's enough. I'm pretty sure it'll be fine though. I think the setup has a lot of power. I rarely use full throttle and it makes it a bit harder to manage throttle since there is so much power to keep consistent speed. I guess it's good for windy conditions though. I might try a 20.5x14 or 21x13.5 later. Any one tries this on the q80?

Hacker Q80-14XS
Falcon V2 21x14
Jeti Spin Pro 99
Futaba 7008SB receiver with 18mz
2 Futaba BLS551
2 Futaba BLS153
1 Futaba BLS352
Powerbox Digi-Switch on order. Using a temporary Western Robotics BEC atm.
Hyperion 5s 4600mAH
MKS canopy lock
Some Spot-on hardware.

quote:

ORIGINAL: Jet Katt

Awry, from what you describe, I would say to try ''Bryan Hebert's Triangulation Trimming Method''. Off the bat, according to Bryan's method, I would say that you need to move the C/G back. Bryan's method says to start with the engine set at .5 down; wing set at .5 positive, and stab at zero. His method also says that the more positive incidence you have in the wing, the farther back you'll need to set the C/G, up to 23%. However, there are some other factors that he mentions that may affect your settings, which depend on the weight of your plane and the size of the wing in square inches. They are as follows: 1) If your model is a two meter model from 10.5 to 11.0 pounds and below 950 square inches of wing area, start with a 25% MAC C/G; 2) If the model has more that 950 sq. in., start with a 27% MAC C/G; and 3) If the wing is over 1050 sq. in. you may end up with .2 degrees positive in the stab and C/G at 30%. The bigger the wing, the farther back you can set the C/G. Your main wings are set at .6, so that would seem pretty close to .5 to me. I would initially start by moving the C/G back. That seems to be the easiest thing to start with.As you know, Bryan Hebert has been a designer of pattern aircraft for over 20 years and has been working at perfecting the trim process for an equal amount of time. His ''Triangulation Trimming Process'' is widely regarded as the standard for trim perfection. He has helped me with both my plane and flying, and he has been working with Brett Wickizer, who is on Team USA and will be representing the USA, at the World Championships in South Africa.Ron

quote:

Rune, really looking forward to your feedback once you got a couple of more flights on it. I am still flying my old one and love to hear differences between old and new Spark.

Volkert