We have a Wattage Pitts 400 that weighs about 30 ounces. We have a 40 amp speed control and a 3 cell 2100ma LiPo Battery. We want this little plane to rock !!! Can anyone suggest a motor that would work well ??? The one we have barely flies it... It's an E-flite Park 400 Outrunner 740 Kv. We want to swing a 10x6 or 10x7 prop. This motors just doesn't have it....

30 ounces is appr 900 gram...? AUW?

For good acro a brushless at 200 Watt (at least) will make it fly. 250 Watt and you are sure to have joy!

AXI is a safe choise, not the very best but good quality for most pilots. Your plane is a typical 2808-size I think, and I like low kV-motors since they swing bigger props at lower amp-draw (my personal taste). Which means a 2808/24 is my advice. APC E 10x5 prop would keep your amperes below max (appr 22 amp at 3S LiPo), if your battery keep up with the load! Will give you verticals, but not enough for hoovering. A slim prop like Graupner CAM 10x6 is propably the perfect match for max effect, still below 25 amp. And as mentioned before: the battery have to be able to deliver the juice!
Of course there are other motors, it is a lot about what you are used to. I have no idea about E-flite, not a known brand to me (although I have one...) If you like xtreme quality take a look at Plettenberg, Actro and Kontronic.

Yup... You've learned a hard lesson about Watts per pound. Even at maximum output, that motor can't handle half enough power to fly a 2lb plane adequately. That motor belongs on a <16oz plane with a much smaller battery. Keep in mind that a "400" outrunner brushless motor is designed to have the same effect as a geared Speed 400 motor on an airplane.

The AXi 2808/24 as recommended by jooNorway is an excellent choice. You won't have 3D, but performance will be pretty darned well. This combo is common on the Wattage parkflyers from the same family as the Pitts.

Another option is the Eflite Park 450 outrunner. You'll want to swing at least an 11x3.8 prop to get the Watts through, though a 10x6 might work okay too. One thing you don't want to get too weighted down with is prop sizes in electric. The prop size may be very different than what you were expecting, so be flexible and finding appropriate combinations will be easier.

I just spoke with my friend Greg, and he would like to know what the next step up from the 2808/24 would be. It's kinda funny, but when he bought that motor, he thought it was a big boy that needed that 40 amp ESC. LOL Ya gotta love those dudes behind the counter...

After Matt gave his (as usual) good reply I checked my E-Flite. It is a 370, and I use it in a depron bipe at appr 9 oz. Enough power for that bird

Next step up in size is the AXI 2814/12, add APC 11x5,5E or 11x6CAM-folder for max thrust without destroying the motor. But then you add 30 gram weight (heavier motor) and the battery should be able to handle 35 amp.
It is always a good idea to use ESC etc which handles more than just what you want, if the cost and weight isn`t an issue. Same issue on the battery.

Other choices: MPJet 2810/13 could be a choice. But I have no experience on these my self, strange enough I have been loyal to Nippy and AXI when it comes to small brushless joybringers.

Hope you get the bipe airborne and happy landings

The 2808/24 would probably fly it fine, so Greg wants the next step up from that for the extra power. He has a 40 amp esc and a 2100ma LiPo battery... whats the next step up from the 2808/24 ??? Dennis

The next step up from a 2808/24 is a Hacker A30-16M. I fly one in a 32oz E-tana and have lots of vertical. I first tried the 2808/24 and it wouldn't cut it. I save it for 25oz planes.

Larry

Hmmmm... the little Pitts only weighs about 19 ounces... would the 2808/24 be fine for it ???

If your plane weights 19oz with the battery, receiver, servos and speedcontrol I'd look at the Himax 2812-1080 that can handle up to a 32oz airplane. This motor will make that plane a fast and high vertical flying plane. If your plane comes in around 22-26 oz I'd look at the Himax 2816-1220. This motor handles 40 oz planes.


Bevo

Is that an Outrunner design ?

Yes, they are out runners.


Bevo