what motor do I need?

[supermattJD]

I just built a 3D Biplane and it weighs 700g, and my current motor isn't powerful enough to do a prop hang comfortably. So i was wondering if anybody can recommend a motor with around 1.5kg of thrust.
This is my current motor: http://hobbyking.co.uk/hobbyking/store/__25084__NTM_Prop_Drive_Series_28_26A_1200kv_286w_short_shaft_version_.html

And this is a video of it flying:
www.youtube.com/watch?v=IafGkpdkCnI

[BlueFlyer]

it's not just the motor, it's the motor/prop combination that will give you the thrust. What prop are you using right now on that motor?

You might find you could get the thrust you need by putting a larger prop on there, however you should be careful doing this as a bigger prop means more air resistance for the motor to fight against when spinning the prop... this increases the current it draws through itself and the ESC. You need to make sure the current draw is within the limits of the motor and the ESC.

I don't know how big your aircraft is or if a 12" prop would be too big for it (aesthetically) but this motor http://hobbyking.co.uk/hobbyking/store/__46579__NTM_Prop_Drive_28_36_1000KV_400W_Brushless_Motor_UK_Warehouse_.html with a 12x6 or 11x7 prop on a 4S LiPo claims to achieve 1.48kg of thrust.

[supermattJD]

Thank you, I'm not too bother how it looks. I don't notice the prop whilst flying.
I am currently using a 10x4.7 slow fly prop.
Do you know of any motors that could lift this on a 3s setup? I don't really want to go to 4s because it would also mean a heavier battery... Do you have any idea how big of a lipo I would need to fly for around 5 minutes with this motor?