Golondrina (oz11943)

 

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Hi, Mary and Steve! So long no write...
As Antonio stated, many models of the Slingsby T-45 Swallow were made back then in the Spanish aeromodelling schools, following this plan issued by the Air Ministry. Please find attached a translated copy of it [see supplement file]
The first two planes of this model to come to Spain went to the royal Aero Club of Toledo in the mid sixties. Later on some fifty of them were bought to be used at the Gliding Schools of the Spanish Civil Aviation Authority, painted in a peculiar red, white and blue livery, which gained them the nickname of 'Pepsi Colos'. Photos of some of the Spanish Swallows can be found at: http://www.aviationcorner.net/galler...
Best regards,
Alcalaino - 11/02/2020
It would be helpful to indicate the thickness of all the parts: fuselage, wing, rudder and elevator.
José - 29/10/2022
Jose (and everyone else out there who might benefit; i.e. does not know the following) Not having sizes or thickness stated in the plan is not a big problem. Anyone can measure things themselves just by displaying the plan on a computer screen and sizing the PDF file correctly using the wingspan (or any other part whose size is stated in the plan, for example, 1.5" wheel). Plan does not have to be printed for this. In this case you adjust (zoom in/out) the PDF file so that the half wing panel shown on the plan measures 7.5 inches (model has15 inches wingspan). You actually take a ruler to the computer screen and measure. Once the plan file on the screen is adjusted to show the correct span for the half wing, every other aspect of the plan will also be to plan's full size "scale". So you can actually measure anything you want at that point. Fuse length, stab span, fin height, the thickness of balsa sheets and/or sticks, anything... This can be done with ANY plan, but of course, when measuring things that are actually bigger than the computer screen, measuring will have to be done in installments, using reference marks and scrolling up or down or moving sideways. And by the way, every computer has a "sweet spot" where the plans are displayed "full size". In my lap top, zooming any PDF plan to display in the screen at 92% shows me the plan and everything in it at the correct size (as if I printed the plan at Kinko's at 100%). Anyway, hope that this long winded explanation can be of help to some. Utilizing the technique just described, I can say that this model is all built with 1/16" balsa sheet.
RC Yeager - 29/10/2022
Both different pdf readers I use have a Measure function, look for how yours does that in your reader's Help. There's no need to measure anything on screen, RCY, that reminds me of an old 'blonde' joke :)
Miguel - 31/10/2022
That's even better Miguel. No excuses then to complain about lack of info on a plan. I forgot to mention that my PDF reader is from "El Cheapo" Corp. I prefer to spend my money on women, bourbon and balsa 8~)
RC Yeager - 31/10/2022
Even the "free" readers have a measurement tool. Adobe's (for example) will also measure area, simply by tracing around the feature. No need to count squares, or weigh cardboard cutouts. Lol!
D A - 31/10/2022
RC Yeager, I know all about reading drawings and PDF files, but thanks anyway for the explanation and especially for the balsa sheet thickness information.
Although the thickness of the parts of the plane can be read to scale, as the thickness is a smaller dimension and in order to avoid reading errors, it is always convenient to indicate this dimension. Most drawings indicate the thicknesses applied to each component.
Best regards
José - 01/11/2022
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