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Old Feb 28, 2011, 07:20 AM
2 Cor 5.21
JMAH's Avatar
Tennessee
Joined Jul 2009
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Originally Posted by 1Radioflyer View Post
...Blessings!

Jay
Thanks, Jay. You, too!

I also need to find a couple of those Dubro spinners like you have. It's going to look pretty sad when it maidens with no nose cone, only one cowl, and no spinners!

Jeff
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Old Mar 04, 2011, 06:06 AM
2 Cor 5.21
JMAH's Avatar
Tennessee
Joined Jul 2009
775 Posts
Still not all that happy with the performance. The 9050x3 props look good, but they just didn't produce the kind of speed that I'd like to have (a Lightning shouldn't be the slowest warbird at the field...that just ain't right, right?)

It was a pretty efficient set-up, though. A 6+ minute flight used less than 1000mAh from the 2250 battery.

Switching to 1060 props yielded better speed, but it was a little too windy to really put the thing through its paces. Seems sluggish aerobatically but it was getting knocked around pretty good yesterday afternoon.

Jeff
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Old Mar 04, 2011, 08:36 AM
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Brandon, Fl
Joined Mar 2005
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You might try a 9*6. You will drop a bit on thrust but could pick-up some prop speed with the smaller blade. As long as you under 70oz weight, you should be OK.

Jim
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Old Mar 05, 2011, 12:08 AM
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United States, CA, Anaheim
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For flight, get rid of the three bladed props. They just don't perform like a two bladed prop. They look cool but you pay for it in flight performance. Sorry, that's how it is.
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Old Mar 05, 2011, 01:01 AM
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Bay Area
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Absolutely get rid of those 3 bladed props. Go with the APC 9x6E props or even counter rotating 8x6E props. How many amps are your ESCs rated for?

Kevin.


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Originally Posted by Gene View Post
For flight, get rid of the three bladed props. They just don't perform like a two bladed prop. They look cool but you pay for it in flight performance. Sorry, that's how it is.
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Old Mar 05, 2011, 06:46 AM
2 Cor 5.21
JMAH's Avatar
Tennessee
Joined Jul 2009
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Originally Posted by RCDad View Post
Absolutely get rid of those 3 bladed props. Go with the APC 9x6E props or even counter rotating 8x6E props. How many amps are your ESCs rated for?

Kevin.
Yep, the three-bladers are gone. My ESCs are rated for 30A. We also have a few 9075s lying about that I might try...
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Old Mar 05, 2011, 11:38 AM
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I use the GWS DD 9070 and they work fine. 9075's will draw a little more amps and give you less flight time, but if your ESC's are rated at 30 amps give it a shot. I use Castle Creations Phoenix 25 amp on mine. I use an ESC for each motor with a Park BEC in the final "plug-in" at the receiver. If you're comparing the speed of your P-38 to other models at the field, remember that most people are not flying their models at a "scale" speed. Some of them are doing F-18 speeds in WW2 airplanes.
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Old Mar 05, 2011, 12:57 PM
2 Cor 5.21
JMAH's Avatar
Tennessee
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Originally Posted by Gene View Post
...If you're comparing the speed of your P-38 to other models at the field, remember that most people are not flying their models at a "scale" speed. Some of them are doing F-18 speeds in WW2 airplanes...
You're spot on, Gene! We have a severe problem with non-scale speeds around our home field.

And since it's my son and brother-in-law that I fly with, I really don't see how I can pass up tussling with them at similar speeds! Can't bear the shame around the dinner table of being constantly humiliated in our aerial battles...

Jeff
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Old Mar 05, 2011, 01:51 PM
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Originally Posted by JMAH View Post
You're spot on, Gene! We have a severe problem with non-scale speeds around our home field.

And since it's my son and brother-in-law that I fly with, I really don't see how I can pass up tussling with them at similar speeds! Can't bear the shame around the dinner table of being constantly humiliated in our aerial battles...

Jeff
Hey now hold on there! My P-38 is slower than yours already and I'm going more toward scale speeds now anyway. HH is a lost cause when it comes to scale speed and mock dogfights. We need to make sure he has the slowest plane so he can't just fly straight up or do his famous 3' loop! Now thats scale!

Alan
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Old Mar 05, 2011, 11:11 PM
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Sorry guys, but for this application I do not like GWS props. They do not hold their shape well in the air at speed and will even break if you really push them. Breaking a prop in flight could spell disaster for a twin.

Kevin.

[QUOTE=Gene;17593303]I use the GWS DD 9070 and they work fine.QUOTE]
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Old Mar 07, 2011, 04:39 PM
2 Cor 5.21
JMAH's Avatar
Tennessee
Joined Jul 2009
775 Posts
The 9075 props worked out really well. I ran about 7 minute flights and took 1000 mAh out of the first battery and 1300 out of the second. It isn't going to set any speed records at the home 'drome, but at least it's starting to fly faster than DoubleH's Cub!

Fiberglass reinforcements on the boom-tail joint worked well also. I tried to make the (belly) landings as smooth as I could, and it came home intact. And that's rare for me with this plane!
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Old Mar 07, 2011, 10:54 PM
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Joined Jan 2007
429 Posts
Finally my GWS P-38 is done! Completely fiberglassed and Callie Graphics made the decals for me. I've always wanted to build a model of this P-38. Hopefully the weather will give me a chance to maiden it soon.
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Old Mar 08, 2011, 07:31 AM
2 Cor 5.21
JMAH's Avatar
Tennessee
Joined Jul 2009
775 Posts
The Lightning looks great, Bill! Did you ever post details about your motor/ESC/prop setup?

Jeff
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Old Mar 08, 2011, 08:34 AM
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United States, MI, Portage
Joined Apr 2007
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That looks beautiful!
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Old Mar 08, 2011, 04:44 PM
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Bay Area
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Gorgeous P-38 SMRTIC! What did the AUW come out to? What mtors and battery are you using?

Kevin.
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