Revolution (oz2549)

About this Plan

Revolution. A 27 inch span experimental C/L stunt model.

Quote: "An experimental stunt model that handles like a thoroughbred. Revolution by M Kelly.

REVOLUTION was designed to see what performance could be achieved with a 3.5 cc stunt model using considerably less than usual wing area, thus giving more compact overall dimensions.

The CG position is fairly far back (under no circumstances should it be more than 1/4 in aft of the mainspars) in order to help the model turn square corners, and as this will obviously give reduced line tension, the engine has 4 degrees of out-thrust, while the fin and rudder are offset and the model flies in a clockwise circle (this gives an increase in line tension due to slipstream effects). Much of the wing and tailplane area is in the slipstream, which enables the model to use higher angles of attack without stalling, or mashing as it is usually called.

Revolution is largely experimental and as such is not primarily intended for competition flying or as a first stunt model, as it is difficult to fly smoothly, being very sensitive and prone to pitch up when excessive control movements are used. however, it will, I think, prove good fun for the experienced stunt flier who will get used to the sensitivity and find the performance exhilarating.

I had done hardly any stunt flying for five years when I first flew it and the only crashes I had were due to engine cuts in the overhead position. Should this happen. while you are flying try and leave the lines slack as the model will usually glide down satisfactorily by itself.

The model is very robust if built according to the plan - the original is still in first class flying order, even though it has suffered five hard crashes to date. Usual damage - torn wingtip tissue occasionally fin or tailplane need re-cementing.

Building instructions First study the plan thoroughly, especially the fuselage assembly as this is unorthodox, then cut out all the parts making sure that the grain runs in the direction shown on the plan.

Assemble the wing first and remember to pre-cement all joints and to use hard balsa for the entire model except where other woods are specified. Mark the rib position on the leading edge and spars..."

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