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1 Intro/Preparation
2 Hull Assembly
3 Sail
4 Rudders
5 Stern Planes
6 Drive Train/WTC
7 Linkages
8 Ballast & Trim
9 Detail & Paint
10 On Patrol
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STERN PLANES - Plane & Appendage Location

1. The first step in installing the stern planes is to locate and mark their position on your model's hull. Using a ruler and your Permit plans, measure the distance from the end of the hull to the trailing edge of the stern planes (7/8").

2. On your model, measure the same distance from the end of the hull along the hull's side seam. Place a mark in pencil on the seam to indicate the point of the stern plane's trailing edge. NOTE: the trailing edges of both rudders and stern planes should be the same distance from the end of the hull.

3. Remove the hinge pin from the assembled stern planes.

4. Using the plane itself, align it's trailing edge with the mark placed on the hull. Mark the point where the control shaft touches the hull seam with a sharpie. Repeat steps 2 - 4 on the opposite side of the hull for the starboard stern planes.

5. Drill a hole for the control shafts on the sharpie mark using a 3/32 bit. Make sure the hole is centered on the hull's side seam.

NOTE: bearings will be installed in the holes for the stern plane control shafts as was done for the rudders. However, at this point we only want a hole sized for the control shaft itself.

6. Slip both stern plane control shafts into the holes and check for fit. Their trailing edges should form a straight line across the hull and should be in line with the rudder trailing edge.
7. Reassemble the stern plane appendages with the hinge pins and reinsert the stern plane control shafts in the holes. Line the appendage mounting tab up with the hull side seam and mark where it touches the hull. Do this for both sides.
8. With the Dremel tool and cut off wheel, cut a slot along the hull side seam where the stern plane mounting tab was marked. NOTE: do this procedure outdoors or in the shop observing proper safety and health precautions.

9. With a flat file, open up the slot to fit the stern plane mounting tab.

10. Reinstall the stern planes into the holes and mounting tab slots. Visually check for alignment and fit. Make any necessary adjustments by further filing out the mounting tab slot. Carefully file the forward stern plane appendage where it meets the hull to ensure a close, accurate fit. Once everything looks good, it is time to install the stern plane bearings.

 

 

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The Perfectionist's Ruler

While an ordinary ruler will work just fine for Permit kit assembly, for some it just won't do. They turn to the engineer's friend, the caliper. Even simple pocket instruments, such as the one pictured below, provide superior measurements over the common wooden ruler or tape measure.