The fuselage profile and vertical tail are cut out and glued to card and traced to another sheet to draw a simple construction plan. The wing and horizontal are simpler shapes so their dimensions are simply measured on a ruler and transferred to the plan.
From the patterns and measurements, this working plan was drawn.
The plan is used for the construction of the model. A shortcut is used in the construction of the tail surfaces. The plan is slid under plastic film attached to the building board. When constructing a tail surface a piece of tissue is placed over the surface outline. Tissue is translucent enough to see the shape under it, so the sticks are glued together and to the tissue. When dry the surface is taken off the board and is ready for painting.
Guillows sheetwood flying models - the Zip nocals.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
The wing panels are joined together and dihedral is formed. Wing will be removable and spans 24 inches.
The wing is fitted to the fuselage and ready for covering and painting. The chord of this narrow wing is mostly less than 2 inches. The ribs are single curved strips of balsa. We read somewhere that slow speed wings of under 2 inches chord are not critical to airfoil shape and behave very much as flat or curved plates. Our experience with small narrow wings has been the same. So our tissue covered wings of this size are not covered with tissue, just a smooth cover on top and an overall light sanding to see that the wing is smooth overall.
The wing is fitted to the fuselage and ready for covering and painting. The chord of this narrow wing is mostly less than 2 inches. The ribs are single curved strips of balsa. We read somewhere that slow speed wings of under 2 inches chord are not critical to airfoil shape and behave very much as flat or curved plates. Our experience with small narrow wings has been the same. So our tissue covered wings of this size are not covered with tissue, just a smooth cover on top and an overall light sanding to see that the wing is smooth overall.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
After a couple of coats of thinned Elmer's white glue the model is ready for some test flights.
A view of the bottom of the model showing the uncovered lower surface of the wing and also shows how the removable wing works. The pointed slotted rear fuselage stick slips into a pocket formed by the three layers of the forward fuselage capturing the wing in a slot formed in the fuselage. The slot is a little longer than the wing chord allowing the wing to be moved backward or forward for minor adjustments in flight trim.
A view of the bottom of the model showing the uncovered lower surface of the wing and also shows how the removable wing works. The pointed slotted rear fuselage stick slips into a pocket formed by the three layers of the forward fuselage capturing the wing in a slot formed in the fuselage. The slot is a little longer than the wing chord allowing the wing to be moved backward or forward for minor adjustments in flight trim.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
OK, here's another quickie 'ZIP' no-cal swinger. The simple lines of the FJ-1 have looked like to me that it should make a quick and easy swinger.
We found this simple 3-view by Joseph Wherry that could easily edited into a image to use for making cutting patterns.
After a bit of work on it in MS paint we came up with this.
We found this simple 3-view by Joseph Wherry that could easily edited into a image to use for making cutting patterns.
After a bit of work on it in MS paint we came up with this.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
First the image is printed to a sheet of cardstock.
The sheet us cut up to make patterns for cutting balsa. Note a small correction(the red line at the vertical tail shows a different shape of the bottom of the vertical tail and notch cut into the rear fuselage to accept it).
Using the patterns, a couple of sharp blades and a metal straight edge, a bit is balsa is transformed into a 'ZIP' kit of the FJ-1.
The sheet us cut up to make patterns for cutting balsa. Note a small correction(the red line at the vertical tail shows a different shape of the bottom of the vertical tail and notch cut into the rear fuselage to accept it).
Using the patterns, a couple of sharp blades and a metal straight edge, a bit is balsa is transformed into a 'ZIP' kit of the FJ-1.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
The FJ-1 builds up quickly. First the vertical tail is glued t the fuselage and dihedral is formed in the wing and horizontal tail.
Next the nose doublers are glued in place and the wing and horizontal stab are attached.
To complete the model for flight, some lead BBs are inserted in holes drilled in the nose and a small loop of tread is glued to the left wing tip. The wing span of the FJ-1 is eleven inches.
Next the nose doublers are glued in place and the wing and horizontal stab are attached.
To complete the model for flight, some lead BBs are inserted in holes drilled in the nose and a small loop of tread is glued to the left wing tip. The wing span of the FJ-1 is eleven inches.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
Test flights on a short line go OK.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
Our latest ZIP nocal is this P-51 of about 14 inches wingspan.
There's a kinda long road from which this model comes from. Back in about 1953 we were trying to learn to fly U-control. One of our learning crashes was profile P-51 designed by Walter Musciano for 1/2 A power. For a nostalgic experience we decided to shrink the P-51 and build and fly it as a swinger. We found a plan for the Musciano P-51 in one of his first books in a library. The shapes of the P-51 we captured to a jpg file like this.
The JPG was printed to a letter size sheet of cardstock and cut up for patterns to be used for cutting balsa.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
Using the card patterns as a guide the parts are cut from sheet balsa. The fuse and wing are 1/16 balsa and the coublers and tail parts are 1/32. At this point we have parts for a ZIP kit.
Fuselage and wing coming together. To simulate the engine for the model P-51, the cylinder and crankcase of a run-out Cox Pee Wee is used as a nose weight.
Fuselage and wing coming together. To simulate the engine for the model P-51, the cylinder and crankcase of a run-out Cox Pee Wee is used as a nose weight.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
Test fit of the Mustang parts and some decoration is added.
We are attempting a simple replication in model form of the Mustang in the attached pic. N2251D was used by Bob Hoover in the 1960s. It was replaced in 1972 by another Mustang N51RH.
We attended a Confederate Air Force Air Show in Harlingen, TX in 1976 and had the opportunity to see Bob Hoover fly the Shrike Commander and the P-51. Both were amazing flights by a man who knew his aircraft thoroughly and could fly them to the edge of their flight envelope. They are experiences that I treasure to this day. Final assembly of the P-51 of the parts and construction of foam wheels for the craft.
We attended a Confederate Air Force Air Show in Harlingen, TX in 1976 and had the opportunity to see Bob Hoover fly the Shrike Commander and the P-51. Both were amazing flights by a man who knew his aircraft thoroughly and could fly them to the edge of their flight envelope. They are experiences that I treasure to this day. Final assembly of the P-51 of the parts and construction of foam wheels for the craft.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
P-51 assembled and ready for test flights.
In test flights the little Mustang flys very fast with the right wing in a severe low right wing position.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
This brings the Mustang to the first picture of it posted above. To try to improve its flight characteristics, we decided to lighten the model and increase the wing dihedral. First the landing gear is removed the Pee Wee is replaced with a Telco Shark.
A quick test flight showed some decrease in flight speed.
Now for a increase in dihedral.
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
We were doing a google search on the OnMark Marksman N256H and found the attached pic, in curiosity we clicked on it to see where it was and found the Guillows forum and learned it was from a post a year and a half ago, so we decided to bump the thread forward a bit.
Al
Al
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
A quick update on the A-26 project is a profile ZiP swing control model of the L.B. Smith Sup-26 illustrated below. Since it is model we will make it a 'what if' model - supposing if Mr Smith had decided to build a single engine version of the Super-26.
Al
Al
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simpleflyer
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Re: Guillows sheetwood flying models - the Zip nocals.
The above sketch was edited from the sketch attached below. The sketch and a two view drawing are from an article about the Super-26 conversion of the Douglas A-26 by LB Smith. The Super-26 next evolved into the Tempo II conversion of the A-26. IMHO, one of the finest and best looking conversions of the A-26
al
al
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