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What apc prop?

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Old 03-22-2009, 10:50 AM
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Flying freak
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Default What apc prop?

What apc prop will match the load of a gws ep 8040 ?

Would i be better to go with an 8 x 4 or a 7 x 4

Steven
Old 03-22-2009, 11:33 AM
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Tyler P
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Default RE: What apc prop?

We need a bit more info. How many cells are you running this on, what kind of plane, what ESC, how many kv is the motor? Different combinations of power systems will yield different results with the same prop.
Old 03-22-2009, 11:40 AM
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Flying freak
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Default RE: What apc prop?

the battery is a 3 cell 2200 mah

Esc is 25 amp

motor is a Tower pro 2409-12

I dont have any other information than that im really not an electric guy...

As for the plane its a delta spad combat thing.

Im trying to switch from gws because of excessive vibration and iv been told apc will give me better performance
Old 03-22-2009, 03:11 PM
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Default RE: What apc prop?


OK

Speedy over revving engines will start to bend the GWS sport props.

Bite the bullet. You need MUCH stiffer props. APC makes a E series go to their website. Then find a retailer.
Being a much deeper prop at the hub area is going to eat some horsepower. You should regain that back with no flexing during violent combat turns.

Enjoy.
Old 03-22-2009, 03:12 PM
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Flying freak
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Default RE: What apc prop?

ORIGINAL: cyclops2


OK

Speedy over revving engines will start to bend the GWS sport props.

Bite the bullet. You need MUCH stiffer props. APC makes a E series go to their website. Then find a retailer.
Being a much deeper prop at the hub area is going to eat some horsepower. You should regain that back with no flexing during violent combat turns.

Enjoy.
ok so apc 8 x 4 will equal the load as the gws?

I only ask as i do not want to burn anything up and have no way of checking amps... (and i'm an electric noob)
Old 03-22-2009, 03:20 PM
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Default RE: What apc prop?


Ok Freakie.

I will do a quick check on a motor calculator & post some results for your stuff. Might take 1/2 hour.
Old 03-22-2009, 03:27 PM
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cyclops2
 
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Default RE: What apc prop?



Ok
57 mph
28 oz thrust
7.6 minutes of flight
181 watts into motor
141 watts out of the motor
about 78 % efficient

Can your motor take 181 watts into it ?
Old 03-22-2009, 03:31 PM
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cyclops2
 
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Default RE: What apc prop?

Be nice if Itold you it was with a 8 X4.

Edit APCE 8x4 229 watts input
23 amps
73 % eff.
46 mph
37 oz thrust

I am old & catch my mistakes.......hopefully

Go to www.adamone.rchomepage.com then to the motor/prop calculator.

just use cell count......mahr of cells......esc amperes........prop list pick the closest you like.........motor make in the list.

You will have a ball
Old 03-22-2009, 03:40 PM
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Flying freak
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Default RE: What apc prop?

It can handle 200 watts according to this site http://www.paragonrc.com.au/20.html

so i guess the 8 x 4 apc E prop is the way to go

cyclops2 : Thank you very much for your time in calculating these numbers. It is people like you that make this hobby a truly great thing.

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