RE: Catalina PBY2 - Budd Chappell  
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RE: Catalina PBY2 - Budd Chappell - 6/8/2009 10:58 AM   
Mustang Fever



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Status: offline 		Scott:

That is really pretty.  Makes me think again about building one.  I might yet, this winter.  I have to have a winter project or I start going round the bend at the first snow fall.  I figure I could build it for around $1200 U.S.D., including the Futaba 7C7 radio system that I'd need for it. 

Have you thought about building a dump tank in yours, for scale fire fighting flybys?  I'm  really thinking a lot about that.  I wouldn't do the water pick up scoops, just maybe quart size tank with an inward opening door near the keel so it could be operated by a big servo and wouldn't dribble water in flight.  Wouldn't matter if it leaked when the bird was on the water, as I'd completely isolate it from the rest of the aircraft.  There's some great videos on line of the Mars doing scoops and drops.  Just punch "Mars Flyby Video" into a search engine.  There's one video of it on takeoff from Lake Elsinore Calif. that is truly awesome.

Here's a couple shots of the PBY nearing ready to cover.  The tip floats are finishing epoxy coated, sanded and painted.  The cowls are just sanded and primered at this point.  (Tamiya enamel, spray cans)   My "British Green" paint of top of the left hand float didn't match the Olive covering very well, so I have to try and get another can today on our way past Detroit.


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RE: Catalina PBY2 - Budd Chappell - 6/8/2009 11:36 AM   
siddus74



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Status: offline 		70oz (4.3lb) thats 1/2 lb light than mine and mine flys very well. Tamiya spray can, is that what you paint on top of the film? I have some doculam to tryout, have you every had to prep and paint film or doculam?

Oh, doesnt the Mars fus make my Budd Chappell Cat look tiny

Scott.


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RE: Catalina PBY2 - Budd Chappell - 6/8/2009 11:44 AM   
Mustang Fever



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Status: offline 		70 oz before covering.  Maybe 75 ready to fly, just a guess.

I only use the spray paint on the floats and the cowls.  The covering is Ultra Cote Olive gloss, Gray gloss, and White gloss.  I hate to paint.  (Puking smiley here, but they don't have one.)

I have painted Monokote in the past.  All I did was scuff it with steel wool where I wanted the paint, and it seemed to stick OK.  The plane (An Albatross D-III) didn't survive it's maiden, so no clue on how the stuff would have held up over time.  I used the Topflite spray cans over the kote.



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RE: Catalina PBY2 - Budd Chappell - 6/20/2009 7:21 PM   
Mustang Fever



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Status: offline 		Here we go. 

I am going to coat the entire hull with Minwax spray poly after covering, as I'm finding I have to poke holes in lots of bubbles to get them to shrink down.  (The downside of covering concave surfaces is that you have to stick the covering down everywhere.)


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RE: Catalina PBY2 - Budd Chappell - 6/25/2009 12:17 AM   
Mustang Fever



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Status: offline 		I will never, ever, use any covering but UltraCote again, for the main covering on airplanes. It is so much better than anything else I've tried. With the 'cote ironed down onto the epoxy coated surfaces, the balsa is strengthened to the point where accidental damage is not much of a concern.

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RE: Catalina PBY2 - Budd Chappell - 6/25/2009 8:49 AM   
siddus74



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Status: offline 		Bob,

Good to see some covering going on eh? Looking good . . . I'm in the middle of converting my Sunderland to electric.

Looks like and interesting color scheme . . . .

Scott.


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RE: Catalina PBY2 - Budd Chappell - 6/25/2009 12:09 PM   
Mustang Fever



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Status: offline 		Here's another shot of her I found last night.

I found a history that said this particular one crashed during a water touch and go in 1998, with two deaths. One of the nose gear door strut failed due to corrosion, the doors opened up at high speed, and she dug in and almost flipped before stopping, then sank to wing level. They way she looks in the pics without the blisters is after restoration.

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RE: Catalina PBY2 - Budd Chappell - 6/26/2009 10:25 PM   
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Status: offline 		Bottom and tail all covered, elevators and rudder CA'd on and functional, aft trim applied. Only took a week to get this far. At this rate, she'll fly by the end of July. Maybe.

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RE: Catalina PBY2 - Budd Chappell - 6/26/2009 10:50 PM   
siddus74



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Status: offline 		super work bob, almost there eh?

Scott


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RE: Catalina PBY2 - Budd Chappell - 6/27/2009 12:07 AM   
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Status: offline 		Man, I wish. It was a perfect night for flying it last night- calm, and the lake was glass. I missed it by only about 30 days.


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RE: Catalina PBY2 - Budd Chappell - 6/27/2009 7:14 PM   
Mustang Fever



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Status: offline 		I found something at a hobby shop during our last trip to Virginia, a Hobbico "circle cutter". I had no idea that it existed. Makes great roundels, even if my blue is a bit light- it was the only color trim I had.

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RE: Catalina PBY2 - Budd Chappell - 6/27/2009 7:23 PM   
siddus74



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Status: offline 		Bob,

Exceptional covering - what are you using for the colours? Film or stickers? . . . that's an ARTF finish . . . what is the film, are you suffering from air bubbles? (film on film)

Scott.


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RE: Catalina PBY2 - Budd Chappell - 6/27/2009 7:43 PM   
Mustang Fever



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Status: offline 		Scott:

All the insignia are self stick trim or cut up sections of self stick decals. I made numbers out of covering for the Mustang, and bubbles were a problem, so I'm doing that no more. This seems to work well. I just spray the surface with Windex before application, so I can move stuff around.

Now that you mention it, the models I build do come out looking like ARFs, as I refuse to use flat colors. Got tired of flat colors when I was in the Army.

< Message edited by Mustang Fever -- 6/27/2009 7:45 PM >


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RE: Catalina PBY2 - Budd Chappell - 6/28/2009 2:34 AM   
Mustang Fever



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Status: offline 		My back hurts. I'm done for the day. It goes with the Mustang and my DR-1 to the airshow at Empire Airport tomorrow.

Scotty: I put together a design study for the Twinstar ARF about 6 months back. Dusted it off this afternoon. I'm thinking a pair of Magnum .30 four strokes????? Can't leave all the fun to you, after all.

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RE: Catalina PBY2 - Budd Chappell - 6/28/2009 8:58 AM   
siddus74



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Status: offline 		Bob, I cant believe the finish your getting, i expect my out the packet jobs to look like that, your handy with an iron there no doubt about that . . .

Twinstar eh? Go for it - Ive heard as far as twins go they are the best things since sliced bread - not sure about the four strokes though - excess weight and vibration? Let me know if you going to get one - ill hold off starting mine.

Scott.


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RE: Catalina PBY2 - Budd Chappell - 6/29/2009 2:11 AM   
Mustang Fever



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Status: offline 		Yeah, they all call me "Iron Man" around here.

Took Catalina to the Traverse Area Model Pilots airshow today, and she was the belle of the ball. I couldn't believe the crowd of spectators that gathered round while I was setting her up for display. Lots of questions. It was so windy I couldn't fly my Mustang, as even the 30 pound Zirolli P-47 was getting knocked all around, and a Bob Violett turbine F-4 Phantom almost cracked up on landing because of the gusts.

I applied most of the polyurethane coating to the PBY hull this evening, and started covering the wing, beginning with the pylon.

This you'll love, Scott: I finally settled on my next project. I just now ordered the Top Flite giant scale B-25 Mitchell. I plan to use my two OS 55 AX's on it. The detailing on the model is superb, but the best part is that it will fit in my car with the outer wing panels removed.
Here's the link to it:

http://www3.towerhobbies.com/cgi-bin/wti0095p?FVPROFIL=&FVSEARCH=LXRXH9&search=Go%20624.96


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RE: Catalina PBY2 - Budd Chappell - 6/29/2009 9:02 AM   
siddus74



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Status: offline 		ARF Bob are you sure, looks nice though . . . glad you Cat went down well, shame about the weather though eh . . .

Im more of a DC3 man > > Top Flite



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RE: Catalina PBY2 - Budd Chappell - 6/29/2009 12:24 PM   
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Status: offline 		Do you think you'll do one someday? I flew in this airplane several times when I was on the US Army Parachute Team, the Golden Knights, 1968-1969, just before I went to S. Vietnam. It's an R4D, the Navy version of the C-47. The vertical fin is a little bigger, only difference.

Prettiest one I've ever seen. The photo doesn't do it justice- it was black, gold, and white. She blew up over North Carolina in March 1973, taking half the team with her.

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RE: Catalina PBY2 - Budd Chappell - 6/30/2009 11:34 AM   
siddus74



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I will definately build a top flight DC3 at some point - strange but I am leading towards electric in my mindset so much more . . . I have already learnt that with these electric birds you need to frame it all up mout the motors and build the plane around battery access when in the correct position for the CG. I plan to build one after my Mars if I get the time . . .

What about an electric Hobbico Twinstar? . . . Nah!

Thing is with electric, some artf IC airframes lend them sleves to a good easy conversion others dont. I dont think the Twinstar does, battery access would be pain in the arse - however copying the plane and drawing up a plan with electric in mind is the way forward . . .

Mmm, I may do that yet!

Scott.


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RE: Catalina PBY2 - Budd Chappell - 6/30/2009 12:13 PM   
Mustang Fever



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Status: offline 		Planning around battery pack location and access is exactly the key to a good electric. That's what sold me on the PBY electric, after I saw from your pictures how there was a "tray" formed inside the bulkheads. The logical approach was to get everything below the tray so the battery could be located wherever necessary, and access was easy.

I'm taking a couple of days off from the PBY, as I've been covering for a week straight. I removed the one thoroughly run in OS 55AX from my Mariner, and swapped in the other one from the Arrow. It doesn't have near as much run time on it, and needs to have its state of tune verified in flight. After that, it will come out and be put in the box of B-25 bits and pieces, and the Mariner will get the OS 46AX from the Hobbico Nexstar trainer, which is such a pig that I now train students on my Big Stik 60.


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RE: Catalina PBY2 - Budd Chappell - 7/5/2009 6:47 PM   
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Status: offline 		Did a little more covering in the last couple days- the pylon and the bottom of the left wing panel between the pylon and the rib just outside the nacelle. Covering that pylon puts me in mind of sheeting the hull: I can now sheet AND cover anything. Just dare me.

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RE: Catalina PBY2 - Budd Chappell - 7/5/2009 7:33 PM   
siddus74



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Stunning work as always . . . be ready for flying before you know it, in fact just put it on the shelf and look at it. Any sight of the Money order yet?

BTW - flown the Sunderland about 10 times now . . . it's sweet. Its the type of model that if you crashed it you would have to build another - it fly's that well, power is awesome - the knowing you have plenty in reserve enables you to really enjoy it and the flaps mean you can really slow it up.

Scott.


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RE: Catalina PBY2 - Budd Chappell - 7/5/2009 10:27 PM   
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Status: offline 		Scott:

I'm really glad the Sunderland turned out so well for you. I hope you get some videos at the Float fly.

I managed to do the bottom of one nacelle in two pieces of covering. The Faye Tilley "heat/stretch/shrink" method using only a heat gun.

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RE: Catalina PBY2 - Budd Chappell - 7/6/2009 1:53 AM   
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Status: offline 		sorry for disturb!!.....
there is anyone of you who knows what the real measurements of the wheels of the PBY-5A, I tried to look everywhere but can not find anything .... thanks and good work!

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RE: Catalina PBY2 - Budd Chappell - 7/6/2009 5:52 PM   
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Status: offline 		AT6: I did some calculations based on a 3 view drawing from Wikipedia, and the main wheel diameter on the PBY-5A is 52 inches, about 4 feet 4 inches, or 1.32M

I think the most difficult parts of the covering job are now over. Joining several pieces of covering to get the camo on the upper wing will be easy compared to covering the pylon, the area between the pylon and the nacelles, and the bottoms of the nacelles. (It's tough because the pylon is constantly in the way.)



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