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B-47 1/16th Scale, 6 EDF Model

Old 03-08-2013, 06:22 PM
  #276  
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Default BAC Composite CG Drawing

Dave,

Below is one of 2 BAC drawings focused on CG and Dims. I have previously lateralled this to you but with all the data
piling up I thought I would send again as it takes the horiz stab's mass CG into consideration aerodynamically. I think
this is what you were looking for beyond 25% of MAC shown on other drawings and in modeling calculators. I have a
file four times as large as seen below if you want it.


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Old 05-18-2013, 05:44 PM
  #277  
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Default Chris Davey Aviation Illustrator's B-47

Dave,

I am trying to locate this drawing. It was the center fold line art in either Motor Books, Aviation, or WARPLANES. The artist is
Chris Davey, the principal illustrator for the Osprey series. I just received a reply from Warplanes and its not from their series...

I have contacted Osprey, though because this specific illustration was for another publication I do not expect the corporate
office of Osprey to forward my inquiry to Chris unless I am exceptionally lucky.

Richard was the source of this image. Full size is 22" x 17" or metric equiv. Richard lost the original with small image being all
that remains. I would like to find the full illustration, scanned at moderatly high resolution as a .pdf so I can enlarge.



Ed

PS: Any new images of your B-47? Have you flown it yet?
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Old 05-20-2013, 06:54 AM
  #278  
Capt. Midnight
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Default Drawing Source

Hi Ed!

That drawing 'fragment' is a new one to me; I have no info on it. Is it possible you might get some help from Boeing Archives?

Cheers,

Dave P.
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Old 05-20-2013, 12:58 PM
  #279  
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Default Mystery Illustration

No, this came to me from Richard who can't find it. I am waiting to hear from Chris Davey. This was
published in a British newsprint aviation periodical...Aviation News, September 1980...as a front and back centerfold.


Someone asked why I am looking for this drawing...at this late stage of this project, I would not normally
consider that, but in this case...it turned out to be the best of the eight multiple view drawings I already
had. Plus its 1/72nd scale in Aviation News.

In competitive flying scale modeling you should never stop reconciling documentation, even after
entering in competition.What little differential I would expect anyone to recognize between this new and
my previous choice would jump out at a judge as they compare this to the model. This thanks to Richard
Reynold's and Sam Collin's measurements of the 1:1 @ 8 different B-47's on display.

This drawing's detail strength represents the single most accurate drawing in my documentation. Consequence of finding an error or ommission can be huge. You have seen me abandon documentation
on two previous occassions since this project began.

Richard Reynolds and Mike Wilson's discovery of the virtual flat on the forward fuselage sides led me to a
complete redo of my model design after it was 90+% complete. The virtual flat is a result of an overlap
between the upper and lower ellipse of the Boeing's fuselage design. Below you see flat area which when
laminated with Flite-Metal will reflect differently than surrounding areas, making it clearly visible.



This virtual flat occurs between Sta. 861.0 and Sta. 742.00 and was discovered during Richards physical
measurement of multiple B-47's and confirmed during Richard's and Mike's review of microfische at Nat'l
Air & Space Museum archive in Wanshington, D.C.

You might ask what difference this makes...A break in reflected light will be seen along side of B-47 as it
sits at its 6 degree rake during static judging. Reflected light from flat area will appear as if it were a wide
pin stripe along side of fuse. There is too great a chance judges will observe the flat in my photo-docs.

Using Davey's multiple view drawing was my only way to be sure I did not get called out on this when I
redesigned my fuselage shape to include it. Remember I must provide a multiple view drawing, photos,
and other 1:1 details in the static judge's resource binder(s) to provide matching points of perspective
to judge model the same way it was constructed. All multiple view drawings must be from a published
source.

Chris Davey replied to my emails and sold me his copy of the September 1980 Aviation News containing
1/72 multiple view drawings on front and back of the centerfold section. Plus, Chris sold me the original
ink on vellum 1/46th drawings of same. Unfortuately, someone had cut each drawing perspective from its
original 36" vellum...yes, quite disappointing indeed. I am remounting to 36" wide bond for scanning and
copying after every perspective is remounted.

There were considerable issues as consequece of someone cutting images from original vellum...however,
these should not be an issue with scanning...we shall see this next week.
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Old 07-06-2013, 05:43 PM
  #280  
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Default Latest News... ?

Dave,

How goes your B-47's flights?
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Old 07-06-2013, 08:44 PM
  #281  
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Default B-47 Grounded

Hi Ed!

As I think I noted before, my B-47 is currently 'hangared' in a downstairs bedroom: the only feasible place to try to fly the model is at the Navy's outlying landing field on Whidbey Island (this is the field used by the Whidbey Island RC club and has a hard surface runway). The Navy changed their rules for model flights from the field about 6 months ago; only Club members who also have NAS Whidbey base-access privileges can fly models from the field; other Club members (like myself) may fly from the field but must have one of the 'regular' Club members accompany them at all times.

I had a pilot (in my 'home' club) lined up, but he doesn't belong to the Whidbey club, and (so far) have not been able to link up with another 'regular' member to make an attempt. It may be that the B-47 model will have to be donated to the Restoration Center of the Museum of Flight - they might be able to put it someplace.

How's your 'build' going?

Cheers,

Dave P.
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Old 07-06-2013, 10:12 PM
  #282  
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Default Whidbey Friends

About six months ago shortly after you announced this issue, I discussed this with a contact on Whidbey. I
have a former next door neighbor who retired to Oak Harbor...Whidbey. His daughter's married to an EA6B ~
EA18G CAG.



http://bcove.me/9xikq3z0



Whidbey is home to the USN's Pac Crisis management... Kat and her husband have just returned to Whidbey.

Would you like me to make a run at acquiring permission for you to fly at the old amphib launch ramp I previously
posted images of? Contacting the Whidbey club officers is not difficult. Could contact Guy and Helen to get Kat's
telephone number...

To locate a paved runway is as easy as looking up your sectional then contacting the owner. There are many in
the immediate area. Over the years I have found private hard surface owners are exceptionally friendly with the
flying scale modeling community.



A wee bit further North:

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Old 07-07-2013, 03:59 PM
  #283  
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Dave,

Hate to see you give up on your B-47's flight. This has bothered me more than you can imagine considering the sectional
and the human factors related to accessing Whidbey.

I assume you know Mike Mosbroker [email protected] and Chuck Bower [email protected] ...

Believe you will be more than pleased with the results of a conversation with Mike and Chuck. This should lead you to a
pathway to use Whidbey pavement.
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Old 07-12-2013, 05:27 AM
  #284  
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Default B-47 Model

Hi Ed!

Thanks for the suggestions! Yes, i know of Mosbroker (our 'local' VP): I think he is a WIRCS member; I know of Chuck Bower; but don't know either of them from personal contact. Thanks for the offer to help, but I think I'll just tread water for the time being, as I'm busy with other family stuff and am plinking away on a 1/20th-scale electric model of the Boeing Sea Ranger. I'll let you know if there are any changes.

Cheers,

dave P.
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Old 07-12-2013, 03:34 PM
  #285  
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Default

Between your local AMA officials and the CAG I have connections to associates so you should have a better than average
opportunity to fly your B-47 from the club's pavement. Let me know if you want me to contact my friends there to follow
through on this.

As you can see the club has plenty of jet pilots, one of which I am sure would be willing to get your B-47 in the air for a
short high speed taxi to check your CG calculation and appropriate thrust.

http://www.wircsrc.com/WIRCS/WIRCS_Home.html

Good luck,

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Old 07-14-2016, 12:15 AM
  #286  
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Dave,

Have you decided whether or not to sell your B-47? Several people have contacted me to ask what you are wanting to do with your model.
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Old 07-14-2016, 04:51 AM
  #287  
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Default B-47 Model

Hi Ed!

Good to 'hear' from you! What's become of your B-47 project???

I'm still trying to get someone interested in my B-47 - will sell for $350 - or give to a museum, etc.

I've contacted several 'local' museums, but only one has expressed an interest, and the problem I have is that I have no vehicle that's large enough to transport it. So if you know anyone (or any museum) that would like the model, just let me know. Anyone can contact me at [email protected].

Cheers,

Dave P.
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Old 07-14-2016, 02:29 PM
  #288  
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Dave,

Did you ever fast taxi your B-47? I had several people ask. Are the wings removable?

Ed
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Old 07-14-2016, 06:10 PM
  #289  
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Default B-47 Model

Hi Ed!

I did taxi the model on the street in front of my house; I would not call it a 'fast taxi', but it seemed to behave OK.

Yes, the wings are removable.

Cheers,

Dave P.
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Old 07-15-2016, 02:11 AM
  #290  
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Wow,
For those who don't know the CAG is a big job in the Navy. Commander.

And the Prowlers? Oh baby, what a nice plane. Soon to be retired. Sigh
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Old 10-21-2018, 06:47 PM
  #291  
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Dave,

What happened to your B-47? Was it ever flown?
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Old 10-21-2018, 07:10 PM
  #292  
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Default B-47

Hi Ed!

Nope the B-47 never flew. It now belongs to (and is installed in) the Evergreen Air and Space Museum in McMinnville, Oregon.

Whatever happened to your B-47?

Cheers,

Dave P.
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Old 10-21-2018, 07:57 PM
  #293  
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We have had a slight delay in our B-47 project. December 17th I went in
the hospital and stayed there and in recovery center until January 23rd.
Am recovering from pulmonary failure and septic condition attributed to
my gallbladder.

Have returned to the B-47 with respect to 3D CAD and 3D printing but no
further CNC milling due to construction pace of Sam's retirement home in
Kentucky. He anticipates moving in just before Thanksgiving and getting
back to milling, hot wiring, and assembly sometime in the Spring.

Pretty much completed all 3D CAD drawing and editing. Will begin printing
and assembly of cockpit tub between now and end of November.

Squared away the pilot, co-pilot and bombardier this week. Found decent
1/8th scale torso with proper helmet at Jet Hangar Hobbies. Will remove
helmet using it on Best Pilot's full body figures.

I bought two highly detailed 1/9th helmet replicas...metal, rubber, and
plastic components. Helmets were cast aluminum weighing about 10 or
more times the weight of the molded pilot figure from JHH.

Glad you found a home for your B-47. It will be enjoyed by all the visitors
to Evergreen.

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Old 04-13-2019, 12:27 PM
  #294  
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Default Did You Finish Your B-47?

Originally Posted by GGRN View Post
Capt Midnight, your project is close to mine in dimensions : 1/15th WS : 90,5" L : 78,7". The structure is all from 3 and 6 mm Depron (to be as light as possible) and the fuselage is already built. The airfoil is the good old Clark Y. 6 EDF and retracts. Which material and EDF system do you plan to use for the structure and propulsion ? Philippe
Phillipe,

Did you finish your B-47? I looked but have not seen other posts related to yours.
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Old 04-13-2019, 03:16 PM
  #295  
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Default Cockpit Question...

Dave,

Its been a while since I last posted a question to you. I am curious about two things as I build out
our two B-47 cockpits.

(1) Is #21 a rotating marker light behind the copilot? I assume if it is there is a glare shield on its front
half.


(2) Is the walk up ramp a non-slip "black" or is it chromate with non-slip strips?


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Old 06-08-2019, 08:10 PM
  #296  
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Default Dome behind copilot.

Dave,

I am creating our cockpits and have a question I asked previously but never received
a reply. What is the dome behind the co-pilots position?


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Old 06-21-2019, 03:50 PM
  #297  
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John, you're probably right, but what I should admit is that what really helped me with all these calculations of how small should be every component of my B-47, was a great calculator TI BA II+ (one of these: https://bestcalculators.net/hp-10bii-vs-ti-baii-plus/), and that's why when I started using it - it made my modelling process much easier.
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Old 06-21-2019, 03:54 PM
  #298  
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Default Sizing or Scaling?

Originally Posted by gregg33 View Post
What really helped me with calculations of how small should be every part of B-47, was ...
Well what is/was it?

If you are looking for size data here is everything at 1:8.7669.





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