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Nosen P-51 Not, giant build for Toledo Show..

Old 08-13-2010, 10:18 PM
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rcwarbirdbuilder
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Default Nosen P-51 Not, giant build for Toledo Show..

I talked to my friend Jim R. today and he wants to enter a P-51 in the next Toledo Show,, He had a supper big Extra or something in last year or year before and took first place in the class, it was painted bright yellow and metalic blue, maybe some people might recall seeing in there,,, I well see if he has a picture to post latter... anyway back to the P-51 which has been setting around in a state of partial construction is getting a new purpose in life,,, I thought I well post some current pictures of where the project is at than go back and post earlier pictures to get us to where we are,, I well do the rough build and sheeting and Jim is going to do the finishing,,
This plane has got to be the best flying plane anyone could have or build... The construction well not be perfect scale but the fligh characteristic sure well be, this thing flys just great!... Theconstruction plans have been re-drawn by my self and all formers have been made to more scale shapealong with the rear fuselage narrowed down among other items as well.. The plans are set up for either Robart 154 or Seirra main retracts... I went to the last week Thunder over Michigan Show and the show started with Jack Roush's P-51B flying low across the field, what a sight and sound to see!!.. guaranteedthis is the next best thing to being in that cockpit !!!.. Below is a picture of the last P-51 B and the P-51D which I built and was purchased by Ted from Interlochen, Mi... George.
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Old 08-14-2010, 04:09 AM
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Ram-bro
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

hey thats a D model not a B model....I will be watching wth geat interest
Old 08-14-2010, 07:32 AM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

George'... give me a call'. Glenn M.
Old 08-14-2010, 08:28 AM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

I can't remember anything anymore B or D,,, B-29 or B-17 you get the picture, thanks.
Old 08-14-2010, 08:30 AM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Glen sent you a e-mail about today, George.
Old 08-14-2010, 05:18 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Here is the state of completion for the fuselage..
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Old 08-14-2010, 05:29 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

My plans for the 103" span P-51.. D or B Model, your choice.
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Old 08-14-2010, 05:41 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Here is the status of the wing.. The prints are outlined for Robart 154 main retract as well as the large Seirra retracts... the Robarts have a strut length about 11" to the axle shaft - where the Seirra is about 12.5"..
This set of wings is being installed with Seirra retracts, they look well built and very strong, I would preffer to have the struts cut down to about 11".
The picture shows comparison of the two retracts, the Robarts are a little mangled after a landing incidence in my P-51B ( the trunion alowed the strut to twist sideways and the tire angled and bent the struts) and waiting repair parts from Robart which seems forever. The B model is my current flyer I use.
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Old 08-14-2010, 05:58 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Hi George, The wing area and weight estimates indicate a wing loading of 50 ounces per square foot. Is that what you expect from previous experience? Dan.
Old 08-14-2010, 06:33 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Dan you got the numbers just about right for a plane done up with all the trimmings and a fiberglassed and painted finish, I am sure the plane could be made lighter but I am giving the weight in realistic number, the wing area is more like 1836sq. inches but the few extra inches would not make alot of difference,,, the plane handles the weight very well and the landings with flaps down are just as simple as bringing in a large trainer in,, that is the opinion of everyone who has flown this plane as well as my self.
Old 08-14-2010, 07:15 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Lookin good George... Put that wood too good use... G.
Old 08-15-2010, 10:14 AM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Hi Guys -

The purpose of putting this model in the Toledo show - is NOT to be scale competative ...

But rather, to show a great flying "Sport Scale" P 51 that really shows, and more importantly, flies extremely well. This aircraft has super presence when it flies. I go to a lot of meets, and when this thing goes, folks take note. I fly mine with an "Old School" Q 100 and it scoots just fine. Certainly not exact scale, but close enough to fool most... that said - I digress.

The major changes / updates on this plane are on the fuse. The "original" had some obvious issues with the fusalage profiles. George went through a detailed excercise and cut profiles as best he could to "fix" some of the glaring issues that bothered us. An example would be the rear of the fuse, very boxy and too large to look correct. One of the constraints was the spinner, the largest available is 6" - so the fuse was matched to that.... actually, the spinner should be about 6 3/8.. but we use whats available. Minor details overall, the plane looks like a P 51.

Anyway, with the airframe basics being rock solid, it is easy to add some scale detailing to make the plane present and show pretty darn well. The plane can handle the extra weight with now worries and still land at a crawl. So, that is the plan at this time

The plan updates was done for us, not to sell ... but, as others saw the plane and the way it flew, they wanted one. So, some "official" plans were updated and made. Again, I cannot stess enough how easy this plane is to fly - and land. The wing airfoil is not scale, but man does it fly !! I sold the last one as somebody "had" to have it [ $$ ].

This new P 51 build, while delayed a bit due to work, is to update my P 51 with the new updates.... the old one is still going strong with the new owner.



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Old 08-15-2010, 05:17 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Being a fellow club member of Jim & George,... Yes this mustang does fly great w/ no bad habits. Very smooth indeed.

G. McIntosh
Old 08-15-2010, 06:24 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

I start the left main wing by cutting some clear pine or spruce on my table saw for spars, in this case I am using 3/8"x 1/2" wood for sparsinstead of the 5/16"x3/8" spars I show on the print , this elimanates theneed for all rear spar shear webs ,,,
I well lay the bottom front and rear spar over the plan than tweek all the rib notches and place them unto the spars,, next step is to get the best alignment over the plans to make up for any shrinkage on the plan or variation on the parts and once satisfied I pin down the spars,, remove the ribs, apply 5 minute epoxy in the notches and glue them in place.
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Old 08-16-2010, 11:03 AM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

I placed the top 3/8"x1/2" spars,, added the 1/4" hard balsa trailing edge for the airlon and flap area, and slipped the notched 1/8" ply diahedral brace in place.. I have the tentative rib cutouts marked for the Seirra retracts about right so I can make the template for the plans and cut out the 1/8" ply rib doublers. Once cut out the assembly shown of the left wing was done in a matter of couple hours. At this stage of construction everything is glued with a little bead of 5 min, epoxy.
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Old 08-19-2010, 07:46 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

The left wing is completed, and the right wing finished than jointed with the left half with the ply diahedral brace... ( new up-gradeto the plan) 1/4" ply Wing hold down bracket is epoxied in the slotted wing center area ribs W-1 & W-2... The wing tips well be cut off for a three peice wing after sanding, looks like the boss is looking over my work.
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Old 08-22-2010, 08:59 AM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Once the wing hold down bracket is in place the first leading edge is placed in the center area and worked out to the wing tip, the two center wing bays over the wing bracket is filled with balsa for additional strength - this is the area that the two 1/4" wing hold down bolts well pass through. After sheeting a second 1/4" leading edge well be applied over the first than shaped and sanded.
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Old 08-24-2010, 09:15 AM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

For the back center section of the wing I have a set of ply brackets cut out, it well have two 3/8" holes drilled, after installation two 3/8" dowl guide pins well by installed.
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Old 08-27-2010, 07:15 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Got the wing tip spars cut off where the airlon and flaps meet, glued on the additional rib to the outer wings, and glued in the wing tube sockets.
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Old 08-31-2010, 09:53 AM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

So far the main wing is rough assembled and the outer wing panels have been cut off and the wing tubes installed.. Next step is to make the flaps and airlons. The trailing edge area of the wing has been sheeted with 1/8" balsa and I have a peice of 1/8" balsa as a spacer below the spar, I than traced the flap outline on to a sheet of 1/8" balsa and placed it behind the wing trailing edge,, I than traced the height of the wing trailing edgeon the two 1/2" balsa stockwhich well be theflap leading edge, which is contoured and rounded. The airlons are built in the same manner... The right side wing panel shows the rear 5/8" overhang of the sheeting which well go over the flap leading edge.
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Old 09-04-2010, 07:02 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Another picture of the 1/8" balsa flap sheet before adding the l.e and ribs,.. Started sheeting the outer wing panel with 1/8" balsa which can be sanded down for a nice match without worrying about sanding through.
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Old 09-05-2010, 10:10 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Here is how simple it is to make accurate control surfaces on my P-51 plans, the 3/32" balsa is placed under the plans and tracing paper placed on it, oultine it and cut it out, that's it, than ca the l.e and glue and cut off the ribs from a 3/16" balsa strip, flip it over and do the same,, for the elevators run a 12" sanding block with 80 grit paper to taperback from the front to the back,, the slots on the core are for Robart 3/16" hinge pins for no guesing on where too drill them.
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Old 09-05-2010, 10:56 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Wow....this pic really shows the difference between a well built set of gear and Robarts. Nothing can ruin you day at the field like bad gear.

Your build looks great, almost makes me want to order a pile of wood and build it into an airplane......almost.

Keep it up, I wish I had your patience and skill. Subscribed with great interest!
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Old 09-10-2010, 08:37 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

I have the wing tops completely sheeted. I am using 1/16" plyset in the sadle with epoxy as a base for the wing fellets, before the epoxy cures I set the wing in place and press down to make the 1/16" ply conform to the wing curve.
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Old 09-16-2010, 03:28 PM
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Default RE: Nosen P-51 Not, giant build for Toledo Show..

Prior to drilling the two rear guide holes ( I left some sheeting off of wing bottom to be able to get a drill bit in) for the wing dowls I am using a construction paper cutout gauge to check both sides of the wing. The two front holes are drilled and blind nuts or t-nuts are installed for the 1/4" steel wing hold down bolts.
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