Hi and Bye Dot (oz1482)

About this Plan

Bilgri Hi and Bye Dot. Wakefield rubber contest model. Note this is not a full-size plan.

Quote: "If you have been afraid to build a Wake field on account of its light and fragile construction, the Hi and Bye Dot is neither light nor fragile in construction. With the new, rule changes for 1954 Wakefield models are now back into a weight class where everyone can build a good strong model without a special selection of balsa wood. The minimum construction weight of 5.2 ounces can easily be built to by anyone with or without previous Wakefield experience; it's nearly two ounces heavier than the models of the past few years.

With only three different types of rubber motor (T-56, Dunlop, & Pirelli) which are available to everyone and a limit (2.8 ounces) of how much you can uses Wakefield flying is now on a more equal basis than gas models, for some engines are always more powerful than others. With weights and power equal, consistency and having a model to fit the weather condi-tions of the day will be more important than ever. On calm days when the thermals are few and far between it's hard to beat the long type, for its flat slow glide is difficult to equal with anything else, and on a windy day a short model with its tighter circles is usually better.

Modification experiments were first tried on models left over from the 1953 eliminations, and while some tests looked failly good it showed that more would have to be done than taking out the gears and substituting a single motor or just short-ening the motor length of the real long type if a person wanted the best possible model. A combination model was built using the same wing, stab and prop assembly on two different fuselages to see which would be the best, but the first tests with both combinations proved far better than was expected, so additional parts were made in order to have two complete models.

The geared fuselage was tried, because a check on the winning geared models for the past five years (1949-53) showed that they did not have as high a power-to-weight ratio as some of the single-motored models that they beat; it could be that there is not as much loss of power through the gears as some think

A lower aspect ratio than in the past was used since both types of fuselags are shorter than in past years, and with all flying to be done under thermal conditions rather than in the early morning and late evenings, it must be remembered ther-mals have no preference when it comes to aspect ratios. The supposedly better gliding high aspect models always seem to take more power to climb as high..."

Supplementary file notes

Article pages, text and pic, thanks to BillW.

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