1206-7500Kv Brushless Motor right for a micro balsa build?

[Nafeko]

I'm building a Guillows Aeronca Champion 85 micro balsa model. This is my second build (my first was only rubber powered). It's not big, 24" wingspan, probably looking at 3-4oz when finished. I have just the skeleton built with the stringers left out until I fit the electronics in. So my big question is the motor I have for it, but not installed yet, is a 7500kv motor. I am a novice and I am learning as I go right now. I chose it because its a small plane and that was a small number (super scientific, I know). I haven't purchased an ESC, battery, servos, or receiver yet because I'm waiting to see the specs on the motor when it comes in and hopefully make an informed decision on those. In y'all's experience, is the 7500kv going to be suitable?

bonus question: what should I wrap it with if I want to paint it? The paper seems like a poor choice, but I might be wrong.

 

[LitterBug]

We would need more information than just the KV. The bell Width/Height, battery voltage, etc. in combination with the KV paints a better picture of what a motor is capable of. A 1102 500kv 1s motor would be WAY to weak, while a 4540 500kv 12S motor may twist the plane apart.

in 1102, 11 is the width, 02 is the height. Try to find similar numbers on your motor, or better yet, post a picture of the motor.

Cheers!
LitterBug

 

[Nafeko]

sorry i could've communicated better. those numbers are in the title. 1206-7500kv. I can't find any details past that, I'm hoping it comes with some numbers in the box. even the manufacturer's website has zilch. It's from Spektrum - Item No.SPMXAM2600

 

[LitterBug]

Here is a video by someone doing the RC conversion you are looking to do. I would go with what someone has already made work rather than winging it.

Cheers!
LitterBug

 

[Bacon34]

I actually just built a lightweight Guillows Aeronca Champ. I used an integrated receiver with servos for rudder/elevator control, integrated brushed esc with an 8520, and a 300mah lipo. Receiver was an old wltoys F949 receiver.

Covered in tissue, flying weight is 65 grams. Real slow flyer.

Built light you don't need much thrust, an 1104 is probably no larger than you'd want to go with brushless.

 

[bisco]

what's the secret to a nice tight covering job? i always get wrinkles

 

[Bacon34]

For tissue a fresh blade and tissue that shrinks well. Pull it tight while gluing with a UHU glue stick.

 

[Bacon34]

 

[cyclone3350]

I have done quite a few micro's & found them to be the most challenging planes to build due to wiegth & power restrictions, but they R very doable if U can stay within a very narrow scope. I did look up the 1206 7500kv, & if it is the Spektrum, then it is a 1s brushless that is used on their UMX twin Otter. They don't have any specs on the motor itself, but from what I can tell from the Otter's specs, is, that it will work providing U plan on 2 channel R&E, to keep the weight not to exceed 45gm. They use a 80X50 3blade, so I guess that a 100X50 2 blade should also work. I've found that with Spektrum, it's best just to use their products together which unfortunately can make this costly. I did the Guillows 24" Super Cub using the Eflite park 180 & their intergrated ESC, servo, RX board with a 250mah 2s. It wieghed in @ 80gm & found this to be well under what the motor can handle & right & the max weight for the airframe. In other words, if it was any heavier, it would work, but I would have to fly it like a jet rather than like a Cub.

 

[Tench745]

Had to do some digging to find what I used on my last UMX sized build. It was a 1304 4000kv brushless on 2s with a 6x3 prop. Plenty of power.
You'll probably have to play with prop sizes a bit to get the right fit for your 1206, but it should work fine.