The instructions call for rather low throws for the aileron servos.

I've been able to increase the throws to just shy of 3/4"... however to do so I had to shave away a little material around the wing mount bolt hole. Just enough to let the lever rods move a bit more.

I also used a longer servo arm than what is normally used with the mini servos.

I then set the aileron servos to 130% travel.

This makes the plane VERY responsive when it is travelling at a good speed, on rolls. SNAPS are almost invisible....

Check out the WM plane video for the glow version and you'll see how fast the plane is on snap rolls... It's FAAAST.


I usually fly it at low rates (60% of this for the ailerons) and flip to full rates when doing things like fast snaps, etc.

You don't want to usually fly at the higher aileron rate, as if you have this on (and high rates on the tail) during takeoff you may stall the plane.

I did this one day, pulled back too fast and early with high rates on, and had enough height by then to recover... it does fly slow enough... but high rates on the ailerons and elevator are not a good idea at takeoff.

For your LOW rates be within the recommended HIGH rates, if you are an experienced flyer.

Otherwise if you are anywhere close to the recommended you'll be fine...

1/4" sounds about right, but use the radio to dial in just a little more.


Make sure that the plane tracks straight before you fly. Test it several times.

It will yaw left on you during run up, and roll left on you when the wheels come off the tarmac.

The left roll is fairly docile, the left yaw can throw you into a ground loop if you are not ready for it.


As far as the C.G.

I originally set it to spec, but have since upgraded the wheels making it a bit heavier in the nose.

I've had no problems though I'll bet the C.G. is now well forward of what is recommended.

I'm hoping the Ultralites will bring the C.G. back to spec.

If I recall I have an 1800mAh battery pack sitting under where I put in a pilot... or off to the side (I have several of these now, so that is why I'm a bit vague...)... I crashed one...

The last one I put together has the T.H. .46 engine mounted inverted with the STOCK(!) muffler hanging off the left side of the plane. I'm eventually going to replicate this on my "backup" Ultimate 40S, same engine, but this time using a Macs tuned pipe.


Did you replace the stock wheels?

I have 2 3/4" rubber wheels on mine now so it handles grass with aplomb. I am about to switch over to 3" Ultra-lite threaded wheels instead though, as the rubber wheels add quite a bit of weight.


Before landing take it high and get very comfortable with it's stall speed.

If you are using an 11x6 prop it will be a very fast plane so you must get used to where the actual stall point occurs. It will be far slower than you expect if you are flying around at normal speeds... however this plane will tip stall when it gets too slow, so always come in under some 10-18% power, and cut throttle just over the runway threshold, then let it float down.


You'll love it with a properly tuned .46.