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FiberClassics P-51 now Comp-ARF P-51

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FiberClassics P-51 now Comp-ARF P-51

Old 04-02-2017, 01:26 PM
  #2401  
luckymacy
 
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Originally Posted by snobird View Post
Hi, have not done CG, waiting for ixroy balancer to show up, in Maine we have a lot of time to weather our planes.. got 13.5 in of snow yesterday
yeah. I rented a house on the water last year at fort point state park and had to drive well over and a half north to a RC field to fly. Not a lot of RC up in that area in general so it's great to see you put so much in to it for your short season.
Old 05-21-2017, 06:45 AM
  #2402  
LBJ
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Finally got to doing some painting. I used English Color 301 grey primer as a base (good stuff) and have both latex and automotive type paints for the finish coats. For the aluminum color, I used English Color Urethane paint with hardener and with some flattener added. English Color added a bit much flat to the paint, but I took some 0000 steel wool and gave it some burnishing to give it some effects of aluminum sheet. Only have the bottom of the wing painted so far, and it still needs the invasion stripes. For the top of the wing, I have Behr dead flat house paint in mil spec OD Green. This has the primer and color all in one and dries out very nicely. I ran a test piece on the canopy frame scrap for the OD Green and Yellow, plus aluminum.

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Old 06-04-2017, 05:16 PM
  #2403  
LBJ
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Still chugging along. Got a bit more paint done on the wing half and fuselage. Rain and wind has shut me down the last few days.

Wing got some OD Green Shade 41 from M&M Models paint chip book. Looks the part. Behr exterior house paint computer matched and mixed at Home Depot. Added the white stripe on top of that. Then, with the recommendation of from Mark in FL, I clear-coated the wing with Minwax Matte Polycryllic water based. I put it on a bit heavy and it dried low sheen. Need to go over again with less clear to make it matte.
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Invasion stripes got clear coated too.

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Fuselage was next up. Got the 301 primer on her. 301 sands very easy. Dries within minutes. Very good primer.

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Old 06-20-2017, 04:40 AM
  #2404  
LBJ
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Still at work on painting. Got the fuselage nearly completed. Need a couple more paint masks - Callie Graphics is re-sizing a couple for me - Hurry Home Honey script was too large and the tail serial numbers needed adjustment.


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Tested the right wing on the fuselage to see how the fairing paint matches the wing. Not bad. I still haven't started on the left wing, will do that while waiting on the paint masks.

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Old 06-30-2017, 05:31 PM
  #2405  
LBJ
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Coming along with the paint job. Did the checker boards today. Big relief to get them done.

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Old 07-01-2017, 02:10 AM
  #2406  
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She's looking superb Lane .... Can't wait too see her all assembled and motor running! So close .

i do love that scheme !

matt
Old 07-04-2017, 08:33 PM
  #2407  
LBJ
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Hi Matt, praise from Caesar!

Looking forward to assembling the MVVS 80cc engine and hearing it run. I've only seen one on YouTube and it runs great. Hope it really hauls the mail.
Old 07-09-2017, 08:56 AM
  #2408  
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Got the spinner painted, sanded, and clear coated with Polycryllic matte along with the checkerboards and a few other items. Won't be long till I can begin assembling the engine and Rx into the bird. Most everything else is still intact. And once assembled, I can do another CG test to see where I am vs the initial CG test where she showed to be nose heavy. I'm hoping that the paint on the invasion stripes, Stars and Bars, and empenage will shift the CG a bit AFT and I won't have to add any ballast. I'm looking for 25 to 30 percent Mean Area Chord.

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Last edited by LBJ; 07-09-2017 at 09:00 AM.
Old 08-25-2017, 07:12 AM
  #2409  
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She CG'd at 29 percent Mean Area Chord with no lead needed. Weight is about 38 pounds dry. With all the rain lately, things may cool down a bit and I can get out and run the engine a few times. Temps here in Texas are supposed to be in the 80's for a few days. But, all the rain from the Hurricane will shut me down if it keeps on coming. A pic or two of the finished paint job.

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Old 09-15-2017, 04:26 PM
  #2410  
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Maidened her on Wed, Sept 13. Short flight, flown by fellow RC club member Barry, since he's a great pilot and flies hundreds of times per year vs my few dozen. We only got 6000 RPM off the MVVS 80cc with 26x10 Xoar prop and that was below what I expected. I wanted to see 6300 - 6500 but didn't get there. After 3 runs on the stand and some taxi runs, I told Barry to give her a GO since the engine was pulling hard on the ground. He took off and kept the gear down, trimmed her a bit, and then landed with half flaps. Perfect landing. But, we could tell there was not enough engine speed to make it a long flight with gear up.

So, I have have 3 new Xoar props on order, 24x10, 24x8, and 23x10, and will try them out likely next week. One of those will give me what I am looking for in a break-in prop. The 26x10 was just too much prop on a brand new engine. I think in time she will be able to run that prop, but not until some break-in. With mid-6000 RPMs we can fly again, retract the gear, and see how she speeds up. Very pleased overall with CG - right on the money, flaps - symmetrically deployed, and just right ailerons and elevators.

One more point, all that engine cooling air ducting and baffle work paid off, the engine ran very cool on the ground and inflight. When Barry landed, I immediately checked the temp and it was just 195 Deg F on the cylinder fins. After flying full power several minutes, that's very cool in my book. Anything 205 Deg F or lower is great.

Barry Ponder, Test Pilot.

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Professional Photographer Nancy Abby took this photo at our Big Bird meet last week.

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Last edited by LBJ; 09-15-2017 at 04:33 PM.
Old 09-15-2017, 04:38 PM
  #2411  
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sweet and congrats once again LBJ! she looks great !

On my ziroli stang with 3w75 the 24x10 works best , using carbon
prop even gets you a bit more rpm I think for the dollar lol....but I
also use the 24x12 and get 6300...I tried the 26x10 too on her and it
did and felt what yours did, first and last time for me.

Matt
Old 09-27-2017, 05:01 AM
  #2412  
LBJ
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Hi Matt, looking forward to testing some new props. I will find at least one that works. Next week looks promising so hope to get HHH out to the field and have a go. When I find a good prop I may buy a carbon fiber version. But, need to break the engine in some first; things may change as she gets some time on her and loosens up.
Old 02-06-2018, 04:46 PM
  #2413  
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Well, hate to break the long silence on this great thread but does anyone know where by now someone has come up with a 3D printed canopy rear cross arch brace? I figure some enterprising builder has done one by now or is seriously on the fence about doing one. If you make one, make two and please contact me! thanks, Lucky.
Old 02-07-2018, 10:33 AM
  #2414  
BobH
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It's pretty easy to make from either wood or styrene plastic.
No need to wait for a 3D printed one.

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