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Electric Stunt => Gettin all AMP'ed up! => Topic started by: Rudy Taube on March 13, 2008, 09:03:19 PM
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After adding Thierry's beautiful ECL plane to my SS list for comparison , I thought some of you might want to see how ECL stacked up against Wet CL planes? I put in a few of the Full Scale planes I have flown so that we can see the impact of the all important "Reynolds Number", (Re=68 x V x c) on our wing loadings. A 400 POUND Nobler? ;-) ..... It gives a new perspective on worrying about the difference between 13.9 and 14.3 oz/sq in in our CL planes! ;-)
As I, and others, have stated before: our CLPA planes can go up a little more in wing loading with no problems, as long as they have an INCREASE in power loading, like we now have with modern powerful wet engines and our very powerful E systems. :-)
Sorry the formating did not come across well, it looks perfect when I typed the post, but then it has a mind of it's own when it is sent to the forum. I hope it is still readable?
Feel free to send me your ECL planes data so we can all get a better idea of the range of wing loadings (and power loadings) that still works well in ECL. TIA
The bomber is Will Moore's, the Diva is Phil Gs, the Impact E is Paul W's, the Elec Crate is Dennis As.
Aircraft W Area A/C wt Wing Load Engine
Name sq in oz. oz/sq ft
Diva 690 59 12.3 Mag .36
Impact E 750 67 12.9 Orbit 30-12
Odyssy 700 65 13.4 ST .60
Cardinal 590 57 13.9 TT 4S .54
Nobler* 510 49 13.8 AT .36
Igor? 630 61 13.9 Saito .56
Firecrac 760 74 14.0 .66RE
PT-19 560 55 14.1 AXI 2826-10
Elec Crate 600 56 13.4 AXI 2820-8
E P-40* 560 57 14.7 AXI 2826-10
E P-40* 560 60 15.4 AXI 2826-10
T-Bomber 750 75 15.4* Two Hackers
Dewoitine 670 67 14.4 AXI 2826-10
35% Extra* 2,049 480 33.7 DA 100cc
Pitts S2B* 29,232 27,200 134.0 LYC 540
Extra 300L* 16,560 30,688 266.9 LYC 540
F4 Phantom* 76,320 928,000 1,750.9 Two J79-GE
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Rudy,
Great stuff it would be interesting to add some prop and rpm data to your SS. My test ship (the "Electric Crate") is 56oz on 600sqin AXI2820/8 prop 11x5 APC-E, rpm 9600.
Best, Dennis
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Hi Dennis,
Thanks. Your right about the additional prop info., etc. being useful to all of us. I have that in my SS, along with other info. (for some: lap times, AS, flight performance, Alt, Temps, etc.) It is too big for me to fit it into the forum format. The one I have posted is a shortend version to fit the space here. I also have a SS showing the comparison in CG change between Wet and ECL, and how to place the E equip. to keep the CG where it belongs.
If I get a burst of energy (a polite way of saying, when I stop being so lazy! ;-), I will reformat the SS info (reverse Col and Row) so that I can post more data for each plane on this forum.
Thank you for giving us your "Electric Crate" data. It is already part of the SS post. :-) I think it would prove useful to all of us to see what others are doing and what works. Other items like; E to E line length, and lap times are important too. Along with flight performance notes (great line tension overhead, or, had to bail out of OH 8s in the wind, or Solid great flight!, etc. ;-) I will try to get this set up so we can all easily enter and read the data. We have a link on our clubs web site with my SSs. I will look into using that here too?
I'm surprised that someone has not commented on the 400 POUND Nobler line? ~^
Your 13.4 oz/sq/ft wing loading is impressive. I think you, Paul W, and Phil G, ALL use Helium in your planes. You guys just don't play fair! LL~
Regards, H^^