power source
10-19-2007 | 12:43 AM
#1
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From: Scottsburg, IN
power source
1st off I am very new to electrics, please excuse my ignorance.
I have two GWS brushed motors (geared) and ran them with a small 5 cell 270 mA and
a GWS Speed control if i recall right its a 25amp, with this setup I thought the power was fairly weak. i was running them on a scratch build profile Bobcat type frame .started off pusher design
and with no pusher props on hand i cut the nose and reshaped the front for balancing as to i placed the motor on the nose for conventional type flight with 11x6 cut cown to 10x6.
i know brushless is the way to go for some major power but where does the power come from
the motor itself / ecs / or battery..?
also Y A F-16 has been stripped and awaiting for turbine I was at the local hobby shop and owner was telling me about this new elc.motor(cant remember what it was) .
it about 2 1/2 '' in diameter and he said its more powerfull and any glow eng. that i had(needless to say at that time he did not know I flew ducted fans) he showed it to me in a r/c truck and when he throttled up it mearly scared the heck out of me, i thought those big rubber tires was going to fly off and hurt someone. it had lots of power still not sure of setup batt/ecs.ect;.. i have many thought of placing one of those in the F-16 with a turbax of dynamax
fan, any thoughts on this would be of great help and apprieciation. thanks in advance.
I have two GWS brushed motors (geared) and ran them with a small 5 cell 270 mA and
a GWS Speed control if i recall right its a 25amp, with this setup I thought the power was fairly weak. i was running them on a scratch build profile Bobcat type frame .started off pusher design
and with no pusher props on hand i cut the nose and reshaped the front for balancing as to i placed the motor on the nose for conventional type flight with 11x6 cut cown to 10x6.
i know brushless is the way to go for some major power but where does the power come from
the motor itself / ecs / or battery..?
also Y A F-16 has been stripped and awaiting for turbine I was at the local hobby shop and owner was telling me about this new elc.motor(cant remember what it was) .
it about 2 1/2 '' in diameter and he said its more powerfull and any glow eng. that i had(needless to say at that time he did not know I flew ducted fans) he showed it to me in a r/c truck and when he throttled up it mearly scared the heck out of me, i thought those big rubber tires was going to fly off and hurt someone. it had lots of power still not sure of setup batt/ecs.ect;.. i have many thought of placing one of those in the F-16 with a turbax of dynamax
fan, any thoughts on this would be of great help and apprieciation. thanks in advance.
10-19-2007 | 02:50 AM
#3
Senior Member
RE: power source
Dude ... first things first. In EP there are no such things as PUSHER props (man I hope I am right on this!). Its because we can change the direction of the motor. But, for brushed motors, they are meant to turn in one direction more efficiently than when its reversed but it still works.
A GWS400 motor is not really performing on 5 cells, you wanna try at least 6-7 cells again depending on plane and prop.
Power of the brushless comes from an efficient and powerful design of the motor and of course more VOLTs means more power too.
60 sized EDF planes are still expensive, if you got the moolahs to do it then why not. The fan unit, esc, motor will set you back between USD700-USD1,000. Batteries are not cheap and you will want at least 2-3 flight packs.
As for RC trucks, they have a geared system so it can create a lot of torque, hence it does not mean the motor is good for EDF.
A GWS400 motor is not really performing on 5 cells, you wanna try at least 6-7 cells again depending on plane and prop.
Power of the brushless comes from an efficient and powerful design of the motor and of course more VOLTs means more power too.
60 sized EDF planes are still expensive, if you got the moolahs to do it then why not. The fan unit, esc, motor will set you back between USD700-USD1,000. Batteries are not cheap and you will want at least 2-3 flight packs.
As for RC trucks, they have a geared system so it can create a lot of torque, hence it does not mean the motor is good for EDF.
10-19-2007 | 07:10 AM
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From: Scottsburg, IN
RE: power source
yes i have tried the motor in reverse and at full throttle it was not near the power.
so to get the most power out of this GWS400 should i look at getting 11.1V battery and keep the esc or upgrade, i misplaced the paperwork with it i think its 25amps.
here is what its was on to give a general idea.
Note where there a battery on the rear motor mount (that was just there while i was finding the CG) pic are before i cut the nose down . i placed the motor on the front just to see how it looked.
so to get the most power out of this GWS400 should i look at getting 11.1V battery and keep the esc or upgrade, i misplaced the paperwork with it i think its 25amps.
here is what its was on to give a general idea.
Note where there a battery on the rear motor mount (that was just there while i was finding the CG) pic are before i cut the nose down . i placed the motor on the front just to see how it looked.
10-19-2007 | 09:23 AM
#5
Senior Member
RE: power source
Getting 11.1V will make a ton of difference but it will also kill the motor fast, the brush will tend to burn out ... maybe its time to look for a cheap brushless. It will be much lighter than a speed 400 motor. You can try one of those bell shaped Tower Pro motors. Try the higher KC motors and turn something like a 7" prop.
