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Electric Stunt => Gettin all AMP'ed up! => Topic started by: RC Storick on June 25, 2013, 02:39:42 PM
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Getting frustrated with all the engineering figures programs and theory's tyring to figure out why the E power has the better feel. I resorted to the basic scale and not some program. so lets do the comparison on what I have here. Weight this stuff your self if you have it.
IC
engine, header,pipe,and prop and spinner 17.1 and that is the farthest from the CG *You could eliminate the pipe
Electric motor prop and spinner 8.4
agarage fuel load and clunk tank weight 4.9 oz
Battery on my set up 12.5 and I will add the esc and timer to this 1.5
Another ounce gets added to both IC and E power for various things like wire and tubing
*(even though some of the pipe is behind the CG its still anchored to the engine and leavered at that point)
The electric combo comes out .4 OZ heaver but the leading factor in this is that the weight farthest away from the CG is 8.7 oz lighter on the electric. Don't believe me weight the stuff as I just did to prove this point to myself.
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Again If you want to do a NO compare/compare you can use that fiqures, they are not correct, but use them. you are using a very very powerful IC engine weight, NOT an IC engine that is comparable to the E 25 weights you are quoting
A PA 40 or AT36 setup weighs 13.6 to 14.1 NOT 17.1 so that puts the EC setup at near 5 ounces heavier.
You can't cherry pick numbers that are not real
I can do this EC motor that compares to the IC one you are quoting EC motor weight is 10 ounces, the battery is 16 to 18 ounces That will make the EC system over 10 ounces heavier than a comparable PA 65 , which you keep using in your compare against and EFlite 25
These are facts and as you say please check them yourself.
Now if you want to use either I do not care but please do not tell me that an E Flite 25 is a PA 75 or 65 when a PA 40 at 8.2 ounce will pull an IMPACT thru the pattern with ease, and will turn the same prop a VF 40 turns faster.
And you do not have to use a pipe with either Merlin 40 or AT36, so the weights do not have to be added.
Randy
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Read close I am compairing the weights
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what are you looking for Sparky?
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"The electric combo comes out .4 OZ heaver but the leading factor in this is that the weight farthest away from the CG is 8.7 oz lighter on the electric. Don't believe me weight the stuff as I just did to prove this point to myself."
So what motor are you using that weighs 15.2 ounces as a compare to your E-25?
Randy
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"The electric combo comes out .4 OZ heaver but the leading factor in this is that the weight farthest away from the CG is 8.7 oz lighter on the electric. Don't believe me weight the stuff as I just did to prove this point to myself."
So what motor are you using that weighs 15.2 ounces as a compare to your E-25?
Randy
Sense I am flying a .60 size airplane I am weighing 60tys. I used a piped setup for the first weight but I just set a super tiger 60 on the scale with close to same results. Same spinner same prop with muffler came out 15.1 oz. This is not a argument about what or how much power any one engine/motor has its all about the weight at the farthest distance from the CG.
I will never be able to explain what I feel so everyone do as you see fit and I will do the same.
Some forget the retro fit Viper 8 , 48 ounce total airplane weight,with a PA.65pipe set up then I converted it to ELE the plane picked up a ounce or 2 I think it went to 50 ounces but the feeling was gone. So its not like I have not compaired apples to apples. There is no formula or theory to this that's the way it was. This is not a hypothetical it was a actual set up.
That airplane didn't last long due to the torque put on the firewall by a front mounted motor.
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My electric stuff weighs more than my IC stuff did. I like the electric lots better. I do not sell equipment, and the physics I learned in high school has served me well, so I disagree with much of what I see here.
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My electric stuff weighs more than my IC stuff did. I like the electric lots better. I do not sell equipment, and the physics I learned in high school has served me well, so I disagree with much of what I see here.
OK