Cessna 170 (oz88)

About this Plan

Keil Kraft Cessna 170. Free flight scale model (or for RC). Wingspan 36in, for 0.8 - 1.5 cc engines.

Quote from KK ad: "These kits build up into the finest and most accurate scale models available today. They look and fly just like the real thing! Super Scale Kit Features: Authentic plans prepared from manufacturers' own works drawings. Lavishly illustrated leaflets ...crashproof one-piece wings, held by internal bands. Detachable tail surfaces and wing struts."

Update 31/05/2013: Added printwood scans, thanks to vintage1.

Update 7/11/2025: Added kit instructions, thanks to JohnLewis.

Quote: "Keil Kraft Cessna 170. The American CESSNA 170 is graceful in appearance; has a high-set wing; long moment arm and generous tail surface area - in short, it is an ideal choice for a flying scale power model. The Cessna Aircraft Company of Wichita, Kansas USA, kindly provided authentic plans and data on which to base this 1/12 scale replica. All parts on the finished model are detachable for easy transportation and safety in crashes. Noteworthy features are the dural undercarriage, one-piece wing and side-mounted engine. Any diesel or glo-plug motor up to .87 cc capacity may be fitted.

Quick Building Schedule: Start by cutting out the sheet parts and then place them in the box lid until required, to avoid loss or damage. Cut free the detachable portions of the plastic cowl and F1 (see plan) - then lightly cement pieces together again. Hold parts in place on the plan with fine steel pins.

FUSELAGE: 1. Build up two side keels (3/16 x 1/8) flat on plan, using pins to hold in place. Now pin F14 to basic side view and cement lower 1/4 x 1/8 keel to it. Pin upper keel in place and trim away top at cabin (see plan). Cut bearers to length and place on plan, packing up with scrap 1/16. Pin 1/4 x 1/8 upper keel to plan.

2. Add 3/16 x 1/8 braces to F5 and F6, then cut out all formers (F1 - F12). Cement left hand halves (printed side forward) to keels and bearers. Pencil former portions on side keel and insert in former notches. Check that all formers are vertical to plan. Add 3/16 x 1/8 tail support to F11 and F12. Crack one of cabin side pieces (see plan) and cement to F5 - F7. When dry, lift fuselage half frame from plan.

3. Hold diesel in place, allowing for cowl thickness, mark bolt holes and drill bearers with 5/64 drill. Engine should be parallel with bearers in side view. Screw bolts into holes from left (port) side-locking each pair by soldering strips of brass or wire across heads. Check engine installation, then remove engine again.

4. Cement remaining former halves to their counter-parts and upper and lower keels. Cements Fla to F2. Check that formers are at right angles to centre keels. then add the side keel, cabin side piece, front 3/16 x 1/8 cabin crosspiece, tailplane support and F16. Cement plastic cowl to Fl and attach F4 to the upper and side keels. Check general alignment as accuracy of entire fuselage depends on this basic structure.

5. Carefully mark out undercarriage pattern (including bends) on dural sheet - then saw or file away surplus material. Bend the dural - in a vice or with strong pliers - to undercarriage front view. Bolt and cement undercarriage to F15. Place undercarriage assembly in position (between F3 and F5) and check for correct alignment before cementing. Box in undercarriage assembly with 1/8 sq and smear plenty of cement around joints. Bind and cement tail-wheel wire to keel and F12, then solder washer to wire, to retain tail-wheel..."

Supplementary file notes

Printwood formers.

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