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Top Flite GS P-47 sports scale; diary of a build

Old 06-05-2014, 03:59 AM
  #1476  
TonyBuilder
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The hinge is drilled in and ready to glue in.



After reviewing the first installation I realized a template was not used, so I did it by eye. You can see that I have good penetration in the hinge block and the hinge is in a slightly downward angle. This is more inline with the TE then with the bottom of the wing. I am sure the template would work, if I had done that with the right wing.



There is good movement and all looks good, a small amount of adjustment is needed as I glue them in.
This style of hinge has a sizable gap at the bottom in the rest position and the down position, and you can see the LE move down into the airstream in the up position.



When in the up position the gap is closed at the top of the wing, also in the down position too.



When I glue them in I use a piece of balsa to flush them out with the bottom of the wing.



The biggest challenge is getting both right and left to be exactly the same!

http://youtu.be/gULlBybiw9U TB
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Old 06-05-2014, 04:35 AM
  #1477  
FlyerInOKC
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TB you make the rest of us look like total hacks! Keep it up!!!!
Old 06-05-2014, 04:55 AM
  #1478  
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TB
Old 06-05-2014, 06:58 AM
  #1479  
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The TE of the aileron pocket at the wing gets a strip of carbon fiber. I get this at my LHS. When I did my first scale closed hinge pocket I did it with just balsa and lots of sanding to create the concave radios for the hung pocket. This was a lot of work and it was venerable. So I developed a way to do a closed scale hinge pocket that takes a fraction of the time and is 10x more durable.

The sub TE is the balsa/ ply TE skin that was glued in to outline the hinge pocket.



The first step is to tape a piece of wax paper to the surface of the wing at the area that will get the TE CF.
This keeps the CA from gluing the substrate to the wing or the CF strip.



Next step is to tape a piece of scrap balsa to the wing just enough over the TE to seat the CF strip.



Next I clamp the balsa substrate to the wing with small plastic spring clamps, and the CF strip to the substrate with small metal spring clamps. This proses ensures you get a flush finish and that it fallows the contour of the wing.

Thin CA is used to glue the CF strip to the TE of the top skin. It is very strong and I have yet to have one fail.



You can see that the CF strip flushes out with the top skin and fallows the angle and couture.



The CF strip closes the gap on the hinge pock. As mention before the gap at the bottom of the wing is open, but you can see that when the aileron is deflected up or down it stays closed. Even in the neutral position it is closed.
The Fries hinge system is not the most efficient hinge system but it is scale for this bird. The closed hinge pocket is the most efficient style and I will be doing that on the chippy build.




The control horn is made from aluminum. In the prototype I made them from G-10 but found they would wallow out in time and create a loos connection, flutter would be an issue. The aluminum will not wallow out and will hold up. I face it with balsa and then I will glue it into the aileron with the clevis attached.



Post video.

http://youtu.be/DP6wV0Jy9iU
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Last edited by TonyBuilder; 06-05-2014 at 07:02 AM.
Old 06-05-2014, 12:41 PM
  #1480  
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Ok, I have to ask. Who is the manufacturer of your SBACH and what size is it? I am about to pull the trigger on one. I dont know why but I got the hots for one bad. Classic thunderbolt scheme for me.

Thanks
Glenn
Old 06-05-2014, 02:04 PM
  #1481  
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T/B

When I did mine I used brass tubing and have had no problems, but then again I only have about 2Doz flights on it.

Cheers Bob T
Old 06-05-2014, 03:29 PM
  #1482  
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Originally Posted by willig10
Ok, I have to ask. Who is the manufacturer of your SBACH and what size is it? I am about to pull the trigger on one. I dont know why but I got the hots for one bad. Classic thunderbolt scheme for me.

Thanks
Glenn
Pilot RC, 100cc got it from Chef aircraft.

TB
Old 06-05-2014, 03:33 PM
  #1483  
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So progress is moving along. I got both servos installed and I am getting the pocket ready.

Aileron servo and linkage.



The aileron hinge pocket is getting laid up.



This will cure over night so I can install it in the morning, that will finish off the aileron, then onto the flap.




TB
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Old 06-06-2014, 03:21 AM
  #1484  
TonyBuilder
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The pocket is all trimmed and ready to install.




I trim it down and fit it to the pocket, tape is used to mark the cut line. The shell is very thin and cuts easily with scissors.



Next I clamp it into position and use thick and thin CA to glue it in.



I will trim it and then finish it off with easy sand.




Post video.

http://youtu.be/4-jF4w99_Kc TB
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Old 06-06-2014, 04:20 AM
  #1485  
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Tony, what a no muss no fuss way to do a control surface pocket.
Great idea

Kevin
Old 06-06-2014, 04:42 AM
  #1486  
FlyerInOKC
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Yep, TB has it all good looks and skill!
Old 06-06-2014, 04:42 AM
  #1487  
TonyBuilder
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Thanks Kevin, I really like this method and I am excited to do the sports closed pockets on my Chipmunk build, that should be interesting being I am not trying to match an existing detail.


TB
Old 06-06-2014, 05:02 AM
  #1488  
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This easy sand is great, I like that I can apply it with my finger like caulking and it dries crazy fast. You do have to only do small areas at a time but it is ready to sand in 10 min so it keeps the build going.




This stuff sand really easily. I will hit the right wings pockets too.
I am done for now and any pits will get filled in after priming, its much easier to see and deal with them after priming.



The hinges are ready to glue in, all is working good and I will fine tune after the hinges are dried. This is one of the advantages of having removable control surfaces, you can tweak them after installation.




So why spend so much time on a hinge pocket, well for one it will be visible and I can detail it out with panel line, rivets and access hatches. My specialty I guess you can say is detailed functional control surfaces and mechanical details.




post video.

http://youtu.be/mPeGMkLjD_g TB
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Last edited by TonyBuilder; 06-06-2014 at 08:08 AM.
Old 06-06-2014, 08:04 AM
  #1489  
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Hinges are all glued in.


I first start with gluing in the hinges on the aileron. I like to get them set first. Doing both at the same time is not a good idea, not enough time to get them all lined up.
I use a jig to ensure they are all at the same height.



Then after they are dried I glue the aileron into the wing. I will let this dry completely before I take the clamps off.





TB
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Old 06-06-2014, 11:43 AM
  #1490  
TonyBuilder
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The hinges have dried and I tested the aileron, all is good. I had to do a little tweaking to get it to move freely. But I think we got it



The aileron is held with three #72 button head stainless steel screws. I thread them into the G10 and will put a nut on it at final setup.



Once I get the entire wing done and before I do the final glassing I will go over the aileron one last time to see if there is anything I can do to improve it.



The gap looks good and I will be very curious to see how they perform. My Mobius cam will be mounted to one of the servo hatches for testing and I will point it at the aileron to look for flutter or anything ells of interest.



Feels good to get this done.



The horn is in and linkage attached.



Checking the ailerons off the list. I am starting to feel like I am in full stride now, been putting in 10hr days on this baby.


Post video.

http://youtu.be/QahAwPp4h-c TB
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Last edited by TonyBuilder; 06-06-2014 at 12:23 PM.
Old 06-15-2014, 07:23 PM
  #1491  
JeffH
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Is the kit version Bubble Canopy still available?
Old 06-16-2014, 02:10 AM
  #1492  
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Yes
Old 06-16-2014, 03:17 PM
  #1493  
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Originally Posted by JeffH
Is the kit version Bubble Canopy still available?
The 60 size kit comes with the razorback canopy, the giant size kit comes with the bubble top.
Old 06-17-2014, 05:33 AM
  #1494  
FlyerInOKC
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Originally Posted by redbiscuits
The 60 size kit comes with the razorback canopy, the giant size kit comes with the bubble top.
Bubble top canopy is available for the 60 size. From the TF website:

[TABLE="width: 100%"]
[TR]
[TD]TOPA1616[/TD]
[TD] TOPA1616[/TD]
[TD="width: 62%"] Top Flite Bubble Canopy Conversion Kit P-47 D-25[/TD]
[/TR]
[/TABLE]
Old 06-22-2014, 05:29 AM
  #1495  
rt3232
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Hi T/B

Are you no longer going to post your progress hear ? as I see your are now posting on the 232, or just building two bird's at the same time.

I watch both just to see what great little tid bits I can pick up.

Cheers Bob T
Old 06-22-2014, 05:48 AM
  #1496  
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Originally Posted by rt3232
Hi T/B

Are you no longer going to post your progress hear ? as I see your are now posting on the 232, or just building two bird's at the same time.

I watch both just to see what great little tid bits I can pick up.

Cheers Bob T

Bob, I am on a break from Angie, you know how relationships can be I am concentrating on my DHC-1 Chipmunk right now. The relevance to the Chipmunk build is I get to practice and experiment with my finishing on that plane so when I do start to finish Angie I will have some time under my belt. The chipmunk is a quick build and as I enter my third week on her she is well on her way to being half done. My planed schedule is to finish the chipmunk some time in July so I can have a flying scale bird for the year and then start to finish Angie. I don't go back to work until October so I hope to have her done by then


Thanks for watching.


TB
Old 06-22-2014, 08:44 AM
  #1497  
rt3232
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T/B

It works for me, as I like to follow builds ware I can learn a thing or 2

keep up the good work

cheers Bob T
Old 06-22-2014, 08:48 AM
  #1498  
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Originally Posted by rt3232
T/B

It works for me, as I like to follow builds ware I can learn a thing or 2

keep up the good work

cheers Bob T

+1. That's why I'm here., and there.
Old 07-01-2014, 12:35 PM
  #1499  
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Since we all appreciate a good fiberglass job here is a trip down memory lane I saw yesterday:

https://autos.yahoo.com/blogs/motora...121653889.html
Old 07-01-2014, 02:35 PM
  #1500  
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Sveeeeeet!

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