Sparkey (oz8709)

About this Plan

Sparkey. All-sheet free flight model, for electric power using Mabuchi A-1 power unit.

Quote: "IF YOUR LOCAL Council has restrictions on flying IC engined-powered models and the neighbours have started to complain about the noise you make with glowplug engines (albeit fitted with a muffler!) take the hint and move over to electric power. if you want to fly internal combustion engines, then move out of the urban locality onto the club field, well away from habitation.

The SMAE's public relations committee have had this fact impressed upon it during the last year, via an analysis of press cuttings which they have obtained to help them understand the problems which model flyers face. We know that, with the magnificent radio-control equipment available today, it has become almost child's play to keep that complex scale prototype in the air - providing the power is available. And unlike past days when we needed square miles to guarantee the safe return of the free flight type, the R/C model can be flown from the postage-stamp size field.

While convenient for those who fancy half an hour on a summer evening in the local recreation ground problems do arise by flying there. The locals have realised that it has become fashionable to complain, and they are doing so. Put their minds at rest by flying electric - and if they still complain, call Kojak!

Sparky is not a hot competition ship - it is primarily a small-park design, being light, safe to fly, and easy to build. But do not omit the DT or the name and address label. Its wing loading is light enough - as with a Coupe d'Hiver model - to respond to the most gentle of rising air and the Jedelski wing form gives a surprisingly slow, 'bouncy' glide.

Do try to select light wood for the structure - that way, the model will bounce, if by any mischance, it hits the ground hard.

Start construction with the wing, pinning down the rear portion of the 1/16 sheet surface flat on the plan and gluing all ribs in place, using non-shrink PVA ad-hesive. When dry, lift from the plan, turn right way up and keep the rear portion aligned with the building board by placing weights on top..."

Direct submission to Outerzone.

Update 16/05/2017: added article, thanks to RFJ.

Supplementary file notes

Article.

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