 Working on Chpt 10 - Canard Construction updated: 27/05/2008
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12/05/2008 - In this chapter the R1145MS Canard is constructed. I have decided to stick to the Plans recommendation and make the shorter 142" Canard. The canard core is made in 5 pieces. 1 centre core 39" long ( using C + C Templates), 2 inboard cores each 43" long (left & right using C + D Templates), and 2 outboard cores each 8" long (using A + B Templates). These are all cut out separately and then bonded together with micro. First the cores are cut using the airfoil templates (A & B). Then the centre and inboard cores have a trough cut into the middle of the top and bottom surfaces using Templates C & D. These troughs allow for the installation of the shear web and spar cap. Step 1 – Trimming the Foam Blocks & Cutting the Cores I started off by cutting out templates A, B, C & D from drawing M17 and spray gluing them onto 3mm Masonite board. They were then cut out on the band saw and finished off with a file. A duplicate C template was also made and the Talking marks drawn on the reverse side of the templates. The Canard is cut from 2 blocks 7"x14"x64", 1.6# Density Poly Foam (Wicks part No. F200-015) and 1 block 7"x14"x41", 1.6# Density Poly Foam (Wicks part No. F200-010). I made the Hot Wire cutter as per plans and strung it with 0.8 mm Nichrome wire and hocked it up to a 24V, 5amp battery charger. This seems to work fine and gives me a nice cut at about 1" per 4 to 5 seconds. I proceeded to cut out the cores with my better half operating the other side of the Hot Wire cutter. There were a couple little mistakes with the wire being lifted off the templates, but this was easily fixed afterwards by sanding down the high ridges, before removing the templates.
I purchased the (2) CG-NC-CLT Lift Tabs and (2) CG-NC-LTNP Lift Tab Nut-Plate Assemblies from CG Products already alodined, with the (3) MS21047-L4 anchor nuts riveted into place. Before cutting the leading edge off the centre and 2 inboard core sections, I created the 1/4" dowel pin guide holes.
Onto Chapter 11
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