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AXi 2808/24 too much power for Formosa?

Old 11-23-2008, 04:02 AM
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Twmaster
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Default AXi 2808/24 too much power for Formosa?

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??
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Old 11-23-2008, 03:26 PM
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Alpea42
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Axi motors do seem to have alotta thrust for they're size. Like wise E-Flight out runners seem weak by comparison
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Old 11-24-2008, 02:24 AM
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Bill G
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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.
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Old 11-24-2008, 02:27 AM
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Dr Kiwi
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You can always tone it down by using something like an 8x4 to keep it at 15A or so.
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Old 11-24-2008, 04:30 AM
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Twmaster
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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!
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Old 11-24-2008, 07:56 AM
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Bill G
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Originally Posted by Twmaster View Post
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!
Gee I mixed that up with a 2208. 2808 should be massive power! Enjoy.
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Old 11-24-2008, 08:27 AM
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CHELLIE
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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
Motor
Kv (RPM/V)
Battery/Prop
Battery Range
Controller
For Planes
Flying Type
2808/24
1190
3S Lipo - 9x5
2-3 LiPo
6-10 Ni
30 Amp
21-53 oz.
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Old 11-25-2008, 08:37 PM
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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.
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Old 11-26-2008, 01:40 AM
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Bill G
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Originally Posted by jooNorway View Post
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.
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.
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Old 11-26-2008, 09:03 PM
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jooNorway
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Originally Posted by Bill G View Post
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.
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
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Old 11-27-2008, 09:11 PM
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Originally Posted by jooNorway View Post
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
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.
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Old 07-08-2009, 12:31 AM
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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.
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Old 07-21-2009, 01:51 AM
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son of alpea42
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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.
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