Sura (oz6060)

About this Plan

Sura. A2 glider.

Quote: "A Good Looking A/2 Sailplane with a High Contest Performance. Sura, by DC Sugden.

A couple of years ago the need for a Nordic for use in English competition weather was felt. Since it was to receive little attention on account of the Wakefields, it had to be very reliable. After the first season a new fuselage and auto-rudder were built, since when the model has never failed me.

It is important to see that the model is built up to weight, as added bits of ballast are easily lost, and everything is gained by having the structure at maximum strength. Therefore keep a strict check on weights during construction.

Tailplane and Fin. Construction is straightforward, but it should be pointed out that a sound piece of TE is vital for warp resistance. Therefore make the notches less than 1/16 in deep. Cover with light-weight Modelspan and dope until almost airproof with low tautening dope. When cutting out the fin note the grain direction, cover with light-weight Modelspan.

Wing. Having cut the ribs from medium hard balsa and the six centre one from tough 1/8 in sheet, strip the TE material from the best sheet and chamfer. Pin down the lower TE and the chamfered LE, and block up the main spar lower boom. Fit the ribs..."

Direct submission to Outerzone.

Update 02/02/2015: Replaced this plan with a clearer copy (with patterned background removed) thanks to TonyP.

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