Prop help plz
- Thread starter Noob9875
- Start date
1.5*30=45 amps constant.
What motors do you have?
This test was done on some really nice motors, so yours may differ depending on what motors you have.
Prop Data(for Multistar Elite 2204-2300KV ):
5x3
12.6V (3S): 50%=224g 3.7A, 100%= 371g 7.5A
(Hover amps @ 125g thrust=1.7A (x 4=500g=6.8A)
8.4V (2S): 50%=120g 2.2A, 100%= 200g 4.3A
(Hover amps @ 125g thrust=2.2A (x 4=500g=8.8A)
5x3x3 (3 blade)
12.6V (3S): 50%=232g 4.7A, 100%= 392g 9.9A
(Hover amps @ 125g thrust=2.0A (x 4=500g=8A)
8.4V (2S): 50%=134g 2.7A 100%= 221g 6.7A
(Hover amps @ 125g thrust=2.7A (x 4=500g=10.8A)
6x4
12.6V (3S): 50%=385g 7.5A, 100%= 591g 9.9A
(Hover amps @ 125g thrust=1.4A (x 4=500g=5.6A)
8.4V (2S): 50%=230g 4.8A, 100%= 367g 9.7A
(Hover amps @ 125g thrust=2.1A (x 4=500g=8.4A)
Noob9875
Well-Known Member
4 x RHD 2204 2300KV Brushless Motor For 250mm Robacat 270mm C300 Multi Quad Cop
Features:
- Light weight design
- Longer duration of flight
- Low CG Design, decreasing vibration when motor runs
- Using Japanese NMB ball bearing, Japanese Kawasaki stator, Ndfeb with strong magnetic and high temperature resistance, decreasing heat generation during pperation, increasing efficiency.
- CW and CCW Propeller adapters, holding the propellers tight.
- Designed for mini multicopters, better flight performance
Specification:
- KV: 2300
- Trust: 408g
- No. of cell: 2-3S
- Framework: 12N14P
- Propeller: 5" - 6"
- Length: 31.5mm
- Shaft: 3mm
- Diameter: 28mm
- Weight: 25g
These are what I'm using as of now
Features:
- Light weight design
- Longer duration of flight
- Low CG Design, decreasing vibration when motor runs
- Using Japanese NMB ball bearing, Japanese Kawasaki stator, Ndfeb with strong magnetic and high temperature resistance, decreasing heat generation during pperation, increasing efficiency.
- CW and CCW Propeller adapters, holding the propellers tight.
- Designed for mini multicopters, better flight performance
Specification:
- KV: 2300
- Trust: 408g
- No. of cell: 2-3S
- Framework: 12N14P
- Propeller: 5" - 6"
- Length: 31.5mm
- Shaft: 3mm
- Diameter: 28mm
- Weight: 25g
These are what I'm using as of now
HDtallrider
Well-Known Member
Since you are using these to learn on I say lube up those itty bitty ball bearings and give it a go. The props are kinda pitchy, no doubt, but if you stay away from full throttle and fly at an easy pace you'll probably be all right. Stop after a few minutes and see if the motors and ESC's are getting really warm. If not, keep going. Balance the props really well and lube the bearings after each hour of flight. Because all you're doing is wanting to get familiar with the quad then less aggressive flying should suit you and the motors just fine. In the meantime you can order some other props. When you get comfortable you can change to the Cobra's and drill holes in the sky!
Exactly, if you lube them and balance the props they will not wear out; they will last until you until you destroy them somehow haha.
HDtallrider
Well-Known Member
Hahaha! I don't know about not wearing out. They aren't designed to last long anyway but with proper care you should certainly get enough bang for your buck, which in this case is learning to fly your new quad. Can't ask for much more than that.
Noob9875
Well-Known Member
Now the problem I am having is the front of the quad takes off way faster than the rear so it just wants to flip I whent through the setup wizard on my gcs and recalibrate everything the motors kick in at same rate witch is 1120 all sound the same props are on right way and all motors going in right direction any thoughts I'm going through the dis board now make sure there are no shorts
One ESCs could be set to slow start-up.
HDtallrider
Well-Known Member
I could be wrong but it sounds like your center of gravity is biased toward the rear. Mark the center of the quad. Using a piece of angle iron, or something similar, place the center line of the quad on it. If it tilts toward the rear then that is the problem. Move the battery forward until the quad balances. Mark the location of the battery for future reference.
HDtallrider
Well-Known Member
That's another option
HDtallrider
Well-Known Member
If it is an ESC problem then check your Tx settings first, since that's the easiest. Next use your programming card to make sure all the ESC's are set up the same. Then if your FCB has a usb port plug in and check to make sure the settings match for all 4 ESC's, or if it's a KK, scroll thru the screen.
When you say you centered everything during the build, do you mean visually, or did you physically check the that the balance was dead center between the fore and aft motors? Not the center of the frame. If it is flipping straight over and not toward one side or the other then I would find it odd if it turned out to be a ESC problem. Please humor a crusty old biker and physically check the balance so we can eliminate that and move on to other possibilities. I made a CG mistake on a 500mm quad and although the size kept it from flipping it sure was hard to control.
HDtallrider
Well-Known Member
Good info on a quick way to check COG. Noob stated earlier that he checked the props
Haha, did not notice. It may very well be COG, quick test would be to switch that ESC over one and see if it still has the problem, if so it is an ESC sync or setting error, if not it has to do with the COG, FCB or Tx.
A lot faster? Do they get to the same speed ever?
Noob9875
Well-Known Member
I figured it out I took the ccw motor off the back and swaped with the front now it does the opposite the back takes off and front nose dives with a pitch to the right where the #2 motor is and the ecs is chattering at higher throttle value so decided to put the cobras on and takes off with a pretty even hover its midnight here so I'll run a couple battery thro her in the morning 
ha-ha she flys tho happy for that
ha-ha she flys tho happy for that