Hi Smith!
One thing I found since flying electric at parks is I don't like my planes so noisy, so, although buying 4 prop jet 2200kv motors to spin 6x6 props, I am now trying to use quieter stuff like apc8x4e or apc8x6e or gws 9x5 dd, these are not as noisy. The more noise you make, the more attention you get ( annoyed people complain... ) I like mine quieter anyway.
I built a stryker and flew it with a slower open style motor swinging a 7x6 and then and 8" prop, it windmilled but it was quiet, maybe I just did not know how to set the break. Strykers are just not that interesting anymore, or maybe it's because I don't have that field on the hill in front of Home Depot anymore, they put a Tire auto business on that grassy lot in front. That was fun to fly with the stryker.
The 4 propjet 2200kv motors I bought are those they Horizon Hobbies made for their last version of the stryker, it was also a 480 motor made to spin their 6x6 prop. Haven't used them yet, saving them for like an F4 DTFB project like is in RCGroups.
Can't tell how big you mean should you scale up unless I just missed mention of size... to spin a 12x6 huh?
Well depends on what you want.
I just started a Savage Bobber that uses a Cobra 2826/10turn/1170kv to spin APC 10x6e on 3s giving 57.5oz thrust for 351watts that's 3.5# of thrust. I want to 3D this plane so I hope to keep my weight to 2-2.5# if I like to hover.
Simply tho, you might pick a size of plane and what material you want to build it out of... let that determine what power system you need.
OR
Use or buy a power system you want to use and see what thrust it gives you with what prop n battery combo, then if 3D you must build some fat margin less than the thrust you can get, if warbird or scale maybe you don't care to have more than 1:1 thrust... less thrust than weight.... you decide tho
I have a lot of smaller motors like the BEEF 2217/7/1250kv and now kind of regret buying all that small stuff, if you go bigger like this Cobra 2820 ( stator size ) 142grams, you can build and know you have 57oz of thrust or that if 3D is something you want, then that would raise your weight limit.
Have you seen these 1400mm 55 inch warbirds on Nitromodels and the motors and batts they use and the specs of these planes.... 600 to 900kv motors spinning big 12 to 14 inch props using 4s batts and that the lower kv motors get better efficiency too. Nerdnic recommended a Tacon Bigfoot 10 he uses with an APC 10x10 prop and 4s batts.
OK, guess I'm saying it's a good idea to get more power so it's not so hard building so awful light, it's challenging sometimes...too much so.
Just an idea, something I do often, look at those warbirds, do screencaps of the specs and consider the power systems and the weights of the planes also in buying motors, the Io no load current at typ 10volts. These things give you ideas, but remember unless you are building out of foam, might want to go for more power. I'll post some ( motor spec pages too with prop tests ) here. I make some of these spec sheets just the right size for 8.5x11 print and I try to save on the ink eliminate the junk in background and usu print BW.
Also here's Colanis' Energy Saving Race Glider.
If you had/have any interest in the FT Bushwacker, see my similar project the methods, pattern xfer, other stuff here:
http://forum.flitetest.com/showthre...%96-TH-Crack-Turbo-Beaver&p=232554#post232554
Sci fi aircraft are really interesting for RC, I posted the ones I want to build. I like pushers with canards and the more efficient prop drive instead of EDF, and I think the first one among these I want to build might be one of the Asgard craft from SG1.
