• Wing Span: 70 in (178 cm)
• Wing Area: 855 sq in (5516 cm²)
• Length: 56 in (142 cm)
• Weight: 7.0 lbs (3.2 kg)
• Engine: .45 - .65 2 - cycle
  (7.4 - 10.7 cc 2 - cycle)
  .65 - .80 4 - cycle
  (10.7 - 13.1 cc 4 - cycle)
• 5 Servos required

The Goldberg Tiger arrived in a huge (57" x 8" x 5") box. The kit is very well packaged with the fin parts in one bundle, the stabilizer parts in another, etc. The hardware packages are grouped according to function. The canopy is well protected to avoid scratches being caused by rubbing against other parts. The plans which are very well done consist of one large rolled sheet and an excellent instruction book with many drawings per page detailing the building process including a complete parts list and balsa sheet layout drawings for each assembly phase. The sheet layout drawings are essential because the sheets are not well marked. It is advisable for the builder to read through the instructions and to locate all required parts prior to actually starting the building process for this section. The plywood and balsa provided was of very good quality and the parts cleanly separated from the sheets.

The building process is conventional beginning with the tail feathers and progressing to the wing and fuselage. Each major section requires the builder to construct certain 'shaping' tools provided in the kit. These are cleverly designed tools which greatly simplify the building and sanding required. These should be assembled before proceeding through the section.

The wing construction is the basic D-tube arrangement and is built upside down over the plans. Special care must be taken when building the wing to ensure that the rib alignment tabs do not get broken off during the assembly. The tabs are lightly scored to facilitate easy removal when the wing is finished. Some may break off and may be lightly tacked with CA during construction. Since the wing halves are upside down, the builder must take care to ensure the parts being attached are oriented correctly, i.e. the wing tips are not installed upside down. Thinned epoxy should be used to apply the nylon center reinforcing instead of CA as recommended by the instructions. The main landing gear is mounted in the wings and these areas should be reinforced with lite ply and epoxy. This enhancement improves the strength of this area of the wing. Two aileron servos were used to reduce the chance of flutter since this has been a common complaint on the smaller Tiger 2 version of this model.

The fuselage utilizes interlocking parts and is assembled and aligned with rubber bands. When a satisfactory fit is achieved, the parts are joined with CA. The technique works well, however, the instructions do not always indicate when the parts are to be glued. Again, reading ahead provides some insight.

The completed plane was sanded then covered in Dark Red Monocote with white Monocote trim as shown on the box cover. The "hockey stick" trim was cut out using a heavy cardboard template. The base color was applied and the trim was applied using water with a small amount of dishwashing detergent and allowed to dry overnight. The trim was then sealed with the iron set to a low temperature.

An OS 60FP with a 12 x 6 Zinger wood prop was chosen to power the Tiger 60. The engine installs easily on the engine mounts that are provided in the kit. The instructions indicate that 3° of right thrust are required and this must be taken into account when the engine is being mounted. Since this plane provides for more than adequate interior space, the fuel tank must be packed in a generous amount of foam so that it cannot move around in the compartment.

The final assembly consisted of attaching the canopy and installing the radio equipment. Again, Goldberg provided cleverly designed gauges which are used to accurately set the control throws. The plane balanced without the addition of any extra weight by positioning the battery and radio appropriately.

The new OS 60FP was broken in by running a couple of tanks of fuel through at the field. The idle was adjusted, the control surface directions were double checked and the model taxied out on the runway. As power was applied, the Tiger accelerated and tracked straight down the runway. The wide-tracking, wing mounted landing gear are a treat. The Tiger lifted off very gracefully. Rolls are axial, stalls are straight ahead and gentle. Inverted flight requires only a little down elevator. Landings are the best part so that even a first time low wing flyer will look good landing this airplane. This is due in part to the wide stance landing gear and the superb flying qualities of the Tiger design.

Two final points must be made. The OS 60FP may not have enough power to provide the performance that some people may require. A Saito .91 may be a better choice of engines. Since the landing gear is mounted in the wings, a cradle is required to transport the fuselage. With this noted, this airplane is a very relaxing, Sunday fun flying airplane.