First build. Question about propeller vs motor

A

Alex1nk

Member
I've got a question about closing a motor and propeller. The propellers I chose are 8"x5.5, and I'm wondering if the RCX RS2206(v3) would work on with these props. I'm also going with a 210 mm frame and what to know if I'll have enough torque and thrust. Not fully decided on other parts yet except for the audrino one micro controller.

Edit: I now have another question. For this motor http://www.myrcmart.com/product_info.php?products_id=11239
will I need 30A or 40A ESCs?

Thanks
 
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I don think them 8" props will fit on a 210 frame. I got a 210 & with 5" props there is only a few mm clearance. I can just about get 6" on a 250 frame.
 
If your learning get the cheapest props even if 2 blade. There is not a massive difference we'll tri blades have a bit more bite on the turns they are faster . But if you got Money to burn go for them. I bought 20 sets of Dal v2 cyclones & I nearly ran out. Good props. Can't get hold of any emax Avans yet here. So will get some racekraft 5051's to try.
 
I ain't no boffin but I been building & flying about 16 months now.
I have only ever used 2 brand of motors dys & emax red bottoms. And 2 brand of esc,
Littlebee 20a & pocket rocket 20amp.
Nothing overheats, nothing has ever failed. I been running the same esc on all quads for 7months. My most potent batteries are chaos lab 95-150C it all comes down cold. So all them YouTube videos I watched on all different thing regarding this hobby was good advice.
As for a size of frame for 8.5" props,
You would be looking at a 500mm.
8.5x2=43cm then allow for the body.
Half a meter corner to corner.
 
If you buy a 20a esc it's rated for just that but they also state that they can be given a short 7-10 second burst of upto 25-27a.
Anymore is not good for the battery.
So although an esc is 20amp you could probably fly the whole pack for 5min at 22-23amps so basically you can go over a bit but not for long. In 7-10 seconds I can be 300' high so that's more than enough punch. I only use 3-4 seconds of full throttle. No need to hang time all day.
 
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