Triumph (oz15458)
About this Plan
Jasco Triumph. Rubber cabin model. Wingspan 32 in.
Direct submission to Outerzone.
Quote: "A simple beginners' rubber model this time. At 32-1/8" span, it's quite a large model but a very straightforward build with hefty wood sections. The only deviation for a plans-built example would possibly be in the leading edge. The original kit featured a routed channel section for the leading edge, this could be replicated by making the L/E from three pieces of wood, or alternatively, the ribs could simply butt up against a piece of strip, with the channel being omitted entirely.
All the best, Dilwyn"
Planfile includes full build instructions.
Quote: "Instructions: The Jasco Triumph is a beginners' rubber duration model of simple design, strong construction and reliable performance. It is recommended to the Young Aeromodeller who has limited experience in both building and flying. The simplest of tools are required - a flat building board, a balsa cutting tool, which must be sharp, and a small quantity of plastic headed building pins.
Before any cutting or building is started, read these instructions carefully in conjunction with the drawing, and familiarise yourself with each part and its purpose.
Fuselage: First of all cover the plan with greaseproof paper (tracing paper) to prevent the cement from adhering to it. Now build a basic frame with 1/8 sq balsa as shown in the side view, using the pins to obtain the correct curves. These pins should be inserted in the board on each side of the wood, not through it. Care should be taken with the joints, as the strength of the whole structure will depend on how good these are. Always cut and fit before cementing in permanently. It is also a good plan to 'double glue' that is, when satisfied with the fit, cement the ends of the piece being fixed in position, allow to dry then re-cement and fit in place.
Having built up one side, do not remove from the plan, but build another directly on top of the first. This is to ensure that both are alike. When this second basic frame is complete and set, remove both from the plan and carefully part. This can be best done by running the balsa knife carefully between the two longerons and easing them gently apart.
Now cut two of each of the crosspieces shown in the plan view from 1/8 sq stock and lay on the plan opposite the position they are to occupy when building up the fuselage. Now pin the two basic ides to the plan view, resting them on the cabin top, where the wing will eventually fit, as this is the only truly flat portion of the frame. This means, of course, that you will be building the fuselage upside down. Again, remember to place the pins against the edges of the longerons and not through them.
Cement in place the cross-pieces at this centre part of the fuselage; they are all the same size, as the sides are parallel at this section, and in fact there are 12 to be fited here, so be sure that they are cut to true length, well joined with the longerons, and check with a Set Square before the cement sets that the fuselage is quite square, also note that the cross pieces at the cabin top are 1/8 in below the top of the longeron to allow the wing to seat properly, so don't forget to pack them up by that amount. When this part of the structure is set, add the cross pieces, towards the tail first and then towards the nose, always checking for squareness during the process.
Having completed the fuselage frame thus far, it may be removed from the building board and the 1 mm plywood nose former, the 1/16 sheet nose strengtheners and gussets can be added. Before fitting the 1/8 sheet rear motor anchor pieces, they should have a facing of ply cemented to the inner sides to prevent the 1/8 dowel anchor from pulling into the balsa when the rubber motor is under tension; also the dowels for the wing holding bands and the undercarriage dowel and tube can be fitted at this stage. The two pins shown in the nose side panels on the plan are fore the nose block holding bands, and should be carefully cemented in now.
Make up the noseblock from 5 laminations of 1/8 balsa, setting the grain at right angles to each preceding piece during the cementing. (The kit contains a balsa block which the amateur will find is more easily finished than building the nose block as previously described). When set hard, add the nose plug, which is another piece of 1/8 sheet cut to fit into the hole in the ply nose former, and position so that the nose block laminations cover the whole of the former..."
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(oz15458)
Triumph
by CR Sinclair
from Jasco
1956
32in span
Rubber F/F Cabin
clean :)
all formers complete :)
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Submitted: 16/07/2024
Filesize: 948KB
Format: • PDFbitmap
Credit*: DilwynMadog
Downloads: 260
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User comments
Not sure what the date of the advert on pic 003 is. But there's a text listing of the Jasco Rubber model (from Arthur Mullet model shop, priced at 6/5) in the Aeromodeller, Sept 1956 on pp 496.SteveWMD - 06/08/2024
Wonder what the prop size is?
Richard Browning - 06/08/2024
I'd guess about 9 inch diameter, maybe 10, going by the size of the UC gear shown and the clearance that gives.
SteveWMD - 06/08/2024
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- Triumph (oz15458)
- Plan File Filesize: 948KB Filename: Triumph_oz15458.pdf
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Notes
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
Scaling
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
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