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-   -   P-47 Thunderbolt Brotherhood (All P-47s Welcome) (https://www.rcuniverse.com/forum/rc-warbirds-warplanes-200/11591827-p-47-thunderbolt-brotherhood-all-p-47s-welcome.html)

Blair K. 06-17-2015 03:04 AM

Absolutely HD.

A tail heavy large scale warbird will crash, ive never seen a incorrectly CG'ed big warbird go home in the same condition it came to the field.

For a newby its worth mentioning if your new to warbirds take a moment to remember what they were made for and fly em accordingly.

They dont grovel around at 1/8-1/4 throttle without incident sooner or later. Ive seen so many beautiful planes destroyed by people trying to fly them like trainers. They are fast agile aircraft and will not bite you if you keep that throttle in the upper half of the stick.

Also some warbirds tend to land at higher speeds than other aircraft but a P-47 with full flaps down are easily landed.

Good luck with the maiden.

Cheers BK

Lifer 06-17-2015 03:15 AM

The balance point on most models is measured as a percentage of the chord. I checked one of my Top Flite P-47's and it balances at 30 percent of the chord measured at the fuselage. 28 to 32 percent is an average range. I prefer the more rearward point which calls for less elevator throw. As you move the balance point forward you will need more throw. Forward balance requires a higher landing speed as you need the air flowing over the elevator to hold the nose up to flair. Rearward requires less throw as the landing speeds are slower. Any extremes on balance choice can be bad. I've seen nose-heavy planes plow into the runway because the elevator couldn't lift the nose. If you balance around 20 percent, this is a likely event. Balanced at 40 percent, the pitch stability will be compromised and loss of control is likely.

Avoid meaningless adages when it is time to balance your plane. Get out your calculator and do the math, just like the engineers that designed the plane did!

You will like your P-47. They are the best mannered of the fighter planes....they were designed to be a stable, good handling weapons platform that translate into a like-handling model.

Kelly Models 06-17-2015 06:33 AM

I set my aero-bats a bit tail heavy. More fun that way, but I would prefer to have this plane right on the money or a tad nose heavy for the first few flights before I make any changes.
We have a field north of Two Rivers (Asphalt Runway) on Hillcrest road and I fly with a Club in Hilbert where we have over 900' of smooth grass runway. Which is where I will fly it first. I prefer grass over asphalt.

edp 06-17-2015 06:44 AM

4 Attachment(s)
http://www.rcuniverse.com/forum/atta...mentid=2103385http://www.rcuniverse.com/forum/atta...mentid=2103386http://www.rcuniverse.com/forum/atta...mentid=2103387http://www.rcuniverse.com/forum/atta...mentid=2103388My 70" Ziroli is getting closer to finish. Star and bars are Major Decals flat coated and the rest are all painted from vinyl stencils I make. My next bird will have ALL painted markings.

HoundDog 06-17-2015 06:56 AM


Originally Posted by Kelly Models (Post 12056536)
I set my aero-bats a bit tail heavy. More fun that way, but I would prefer to have this plane right on the money or a tad nose heavy for the first few flights before I make any changes.
We have a field north of Two Rivers (Asphalt Runway) on Hillcrest road and I fly with a Club in Hilbert where we have over 900' of smooth grass runway. Which is where I will fly it first. I prefer grass over asphalt.

Calumet Flyers ?

Kelly Models 06-17-2015 07:24 AM

Yes. I've been a member for over 10 years. Our Fathers day event is this weekend. Come on up if you like.

Kelly Models 06-17-2015 09:35 AM

We marked the wing at 28-32% and it balances between the two points without adding any additional weight. Am I lucky or what?

Lifer 06-17-2015 10:17 AM

Either lucky, or good!

HoundDog 06-17-2015 10:39 AM


Originally Posted by Kelly Models (Post 12056653)
We marked the wing at 28-32% and it balances between the two points without adding any additional weight. Am I lucky or what?

Only the Maiden will reveal the truth ... Good Luck ... Post Video PLZ

SWORDSN 06-17-2015 10:44 AM

Had a dead stick with my TF P47 w/DLE55.When I flipped the prop there was almost no compression.After removing the muffler you could see a piece of metal missing on the top of the piston.I sent it back,It's still under warranty.Had about 15hours on it.

Lifer 06-17-2015 11:06 AM

What are the recommended throws on the elevator on your P-47?

Lifer 06-17-2015 11:09 AM

Swordsn,

Did you get a chance to inspect any further? Pull the plug? I was wondering if there were any clues? Also, what percentage oil did you use?

Kelly Models 06-17-2015 11:10 AM

I'd say lucky. I'll post a video of the outcome in a few days.

Lifer 06-17-2015 11:29 AM

Kelley Models,

The T.F. Giant Scale P-47 shows 1/2 inch for up elevator on low rates. That's what I use all the time except for taxi when I flip to high rates to keep the tail planted. A lot of people fly with too much elevator throw and when the plane is pitch sensitive they move the balance forward rather than reducing the throws.

Best regards.

Kelly Models 06-17-2015 11:59 AM

Lifer,

Thank you. A friend of mine had a Y.A. P-47 and he told me too, that it requires very little elevator for normal flight, and high rates for landing and take off. We'll make some adjustments before I fly it. This is the first plane I've built that I've been so nervous about flying it. I've built a lot of Extra's, Cap's, etc. and never was worried about the outcome as much as this one.

SWORDSN 06-17-2015 12:06 PM


Originally Posted by Lifer (Post 12056714)
Swordsn,

Did you get a chance to inspect any further? Pull the plug? I was wondering if there were any clues? Also, what percentage oil did you use?

I did pull the plug and all looked good. I'm running Klotz synthetic 40-1

Lifer 06-17-2015 12:07 PM

I don't use high rates for landing and takeoff....low rates only. High rate for taxi.

In any event, best of luck!

radiisteve 06-17-2015 02:20 PM

Hi There - I guess I'm a late addition to the party, but better later than never possibly? Just purchased the Top Flight 85" P-47 kit with a full compliment of complete Robart P-47 Retracts to build my first large P-47 (going with a G-62 for power) off of RC Universe. I also have the .60 size TF P-47 ARF kit off of the Tower scratch 'n dent heap and am doing some scale, mods (New Scratch Stab and Tail/rudder with scale hinge-points ala Ziroli design style). I sent you an email earlier before realizing this all started a few years ago. So I'm looking to add my P-47's to the ever growing Warbird fleet (TP 85" P-51 & Meister Corsair), and am looking forward to being a part of the P-47 Brotherhood.

Kelly Models 06-17-2015 02:42 PM

Gotcha. Thanks for the tips.

radiisteve 06-17-2015 11:57 PM

Hi There - I guess I'm a late addition to the party, but better later than never possibly? Just purchased the Top Flight 85" P-47 kit with a full compliment of complete Robart P-47 Retracts to build my first large P-47 (going with a G-62 for power) off of RC Universe. I also have the .60 size TF P-47 ARF kit off of the Tower scratch 'n dent heap and am doing some scale, mods (New Scratch Stab and Tail/rudder with scale hinge-points ala Ziroli design style). I sent you an email earlier before realizing this all started a few years ago. So I'm looking to add my P-47's to the ever growing Warbird fleet (TP 85" P-51 & Meister Corsair), and am looking forward to being a part of the P-47 Brotherhood.

rt3232 06-18-2015 04:01 AM


Originally Posted by Lifer (Post 12056753)
I don't use high rates for landing and takeoff....low rates only. High rate for taxi.

In any event, best of luck!

Will add my 2 pennies hear I only use a hi rate on the elevator as the low rate setting lets me fly at a more scale like appearance, and with full flaps I use about 6 % down elevaror programed in, this lets me stay at 3 to 4 clicks above idle with no bolning on final till I cross the end on field line

Cheers Bob T

BOLTMAN 06-22-2015 11:05 PM

4 Attachment(s)
Some in flight pics of my Robart Jug......
http://www.rcuniverse.com/forum/atta...mentid=2105219 http://www.rcuniverse.com/forum/atta...mentid=2105220 http://www.rcuniverse.com/forum/atta...mentid=2105221

Also a gaggle of Jugs at a recent warbird event that I attended, someone called it a Jug-a-thon!

http://www.rcuniverse.com/forum/atta...mentid=2105222

alanc 06-23-2015 02:08 PM

Thought you guys would like to look at the Detailing of what has to be one of the best 47 detailing threads there is out there, hope you enjoy

http://www.largemodelassociation.com...php?f=9&t=5291

chris923 06-24-2015 03:16 PM

1 Attachment(s)
My friend Tom maidened my rejuvenated Hangar 9 P-47 150.
G62 with a Beila 20-10 4 blade. Videos are very good. But the flights were very successful!

https://youtu.be/z_zLlOWOcpM

https://youtu.be/aCfDMeme4Fg

Sorry videos are of poor quality.
http://www.rcuniverse.com/forum/atta...mentid=2105529

HoundDog 06-24-2015 03:51 PM


Originally Posted by chris923 (Post 12060761)
My friend Tom maidened my rejuvenated Hangar 9 P-47 150.
G62 with a Beila 20-10 4 blade. Videos are very good. But the flights were very successful!

https://youtu.be/z_zLlOWOcpM

https://youtu.be/aCfDMeme4Fg

Sorry videos are of poor quality.
http://www.rcuniverse.com/forum/atta...mentid=2105529

Your budy Tom's last name wouldn't begin with a "K" would.
U going to the electrons flyin Saturday or taking your Bird to the
War Birds and Classic In St Charles Ill. Friday looks good but
Winds to 20 mph from the NE on Saturday, Rain Sunday.


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