and what props would produce over 1000grams of thrust


thank you

Just stating thrust tells us almost nothing though you will first have to decide decide whether you mean 100g or 1000g. Then decide what size battery you want to use (number of cells). Then what sort of speed you want to fly at. Then how much you want to pay.

When you get that sorted out there will still be dozens (at least) of motor/prop combinations that could meet your requirements.

Steve

Originally Posted by slipstick

Just stating thrust tells us almost nothing though you will first have to decide decide whether you mean 100g or 1000g. Then decide what size battery you want to use (number of cells). Then what sort of speed you want to fly at. Then how much you want to pay.

When you get that sorted out there will still be dozens (at least) of motor/prop combinations that could meet your requirements.

Steve

yes i mean 1000 grams an i wan to use 3cell lipo, i dont want to go top speed or i just want to cruise around.

Just a few of many 100 examples:

Suppo A2217K-8T (70g, ~1175Kv) with a 10x6 GWS HD:

10.7v, 20.80A, 222W, 9030rpm, 51.3mph, 1135g, 39.97oz, 5.11g/W

or:

ARC 28-47-1.5 (115g, 2920Kv) with a Zagi Carbon 5x5

10.8v, 39.70A, 426W, 25560rpm, 118.6mph, 1000g, 35.21oz, 2.32g/W

or:

Justgofly 550XT 12-magnet (90g, ~825Kv) with a 13x4 APC E

10.7v, 15.7A, 169W, 6450rpm, 24.43mph, 1160g, 40.96oz, 6.86g/W

What is actually this thrust?
Does this mean that 1000 grams thrust can make a aircraft of 500grams fly?
*considering good wings and all

1000g of static thrust can potentially fly an aircraft up to about 3000g in weight. If the plane only weighs 500g it will hover and/or take off vertically.

Steve

Originally Posted by rcplaneliker

and what props would produce over 1000grams of thrust


thank you

http://www.flybrushless.com/

The prop database there will show you a bunch of props. Pick the ones you might want to use and you can see the thrust to RPM graph for it and also, below that, the motor that produced the data for the chart.

Jack

Originally Posted by shaunak1234

What is actually this thrust?
Does this mean that 1000 grams thrust can make a aircraft of 500grams fly?
*considering good wings and all

Thrust, painted with a broad brush, is merely a measurement of how hard a plane will climb.

If we had a plane that weighed, say, 1 pound, or 16 ounces.... and our motor/prop combo was able to develop 12 ounces of thrust, we would have enough to do some nice climbouts, and enough to do some mild aerobatics.

If our motor/prop combo could develop 16 ounces of thrust, then the climbouts would be even steeper, and since we are developing the same thrust as the plane's weight, we could maybe get it to almost 'hover'.

And if the motor/prop combo developed say 32 ounces of thrust (twice the plane's weight) then it would have enough power to climb vertically right out of sight.

This is just a simple explanation, but there's really no sense in flooding you with a bunch of technical terms that you'll be learning in the future.... all in good time...

Chuck

I always pick the size of the prop that suits the plane first,
then how many rpm to get the thrust required Using Doc Kiwis thrust charts .

I'm continuing to learn, too.

@rcplaneliker: I have a dumb question: why do you need 1000g of thrust? For aerobatics? How much does the plane weigh?

This super helped my x-4 FPV quad build. The model is crazy heavy. and im wanting long flight time if i have an efficient prop motor battery combo it should hover at minimal amps

Originally Posted by AnythingRC1989

This super helped my x-4 FPV quad build. The model is crazy heavy. and im wanting long flight time if i have an efficient prop motor battery combo it should hover at minimal amps

One of the things that you can see for each prop there at flybrushless.com is the input power, RPM, and thrust at various RPMs. And, generally speaking, any motor that can give you the same RPM will give you the same thrust but also needs to have that same input power (or more than that if it is attaining that RPM at partial throttle).

Jack