Twmaster

I had a Formosa a couple of years ago and never really got too many flights on it before THIS happened.

Anyhow, I finally got around to getting me a NIB 'Mosa and don't really have too many motors sitting around. Since I'm on a fairly tight budget I want to use what I have instead of buying anything.

So, knowing how the old 'Mosa flew on a ~100W outrunner is the 2808 overkill? I also have a new E-Flite Park 400-920 outrunner that could go in the 'Mosa.

I'd be running a 3S 1700 to 2200 pack.

Input??

Alpea42

Axi motors do seem to have alotta thrust for they're size. Like wise E-Flight out runners seem weak by comparison

Bill G

If I remember correctly, I have an AXI 2808 in my Alfa 190 with a 9x7 GWS HD prop. Flys well, but by no means overpowered. Not really enough to be called 3D. Will sustain vertical climb for a while, but not indefinitely. About the same power as a short can 370-4100 on a GWS-C box.

Dr Kiwi

You can always tone it down by using something like an 8x4 to keep it at 15A or so.

Twmaster

Good point Phil. Thanks. The added benefit of the 2808 is extra weight in the nose so I don't have to fool around moving batteries to get the CG right!

Bill G

Gee I mixed that up with a 2208. 2808 should be massive power! Enjoy.

CHELLIE

You can never have enough Power That motor will work fine, like Dr kiwi said, it can be toned down, with a smaller prop, or you can use a 2 cell lipo to tone it down with, Take care, Chellie

jooNorway

Some years ago I did assemble a Formosa for a review. I powered it with an AXI 2808/20, used 3S LiPo. Stepped down from initial 9x6 APC-E propeller to an APC 8x4E. Suitable power with the smaller propeller, but a lot of fun with the 9x6 On 8x4 the plane felt better to fly IMHO. Weight; no problem.
Just play with smaller propellers if you get too much power.

Bill G

One nice thing about the high power outrunner with small prop, is that ourtunners tend to lag a bit when accelerated quickly. Just not the same as a geared setup. With an 8" prop on that motor hovever, you should have rocket like acceleration.

jooNorway

In addition I like small diameter propellers for pattern because the gyro-forces are less. Especially when you pull up for loops, squares etc there is less need for right rudder inputs to keep the lines correct

Bill G

Yes, that too. I like the 9" scale size on many of my park warbirds. I did find, however, that reducing the diameter to 8" virtually eliminated the torque effects, especially on launch.

nick_cool

I have a Hacker 20-20L in my F1, and it is perfect, also the AXI 2212-20 will go ok with a 100maHr pack.
But the 2808 will add weight, will need the 1700mA packs and will be overpowered.

son of alpea42

For this plane I would use the E-Flight 400.Mine is only one pound with a Turnigy 2830-1050kv with a 9x6 electric prop and it takes of in ten feet but I am not using a 2200mah battery.I use a 1000mah battery.Do you use one or two servos on the wing.