Dorand AR.1
Per FAC rules, Tom designed his Dorand to feature a removable nose block (above left). Silver vellum is used to replicate the aluminium cowl (above center). The car-like radiator was due to the fact that the full size aircraft was
and cement the dihedral breaks with cyano- acrylate glue. Note that the bottom wing has slightly more dihedral than the top wing. After removing the wings from the build- ing board, install the wing strut attachment gussets on the top side of the bottom wing and on the bottom side of the top wing. Use a hole punch to make the Tyvek® reinforce- ment disks for the top wing underside front strut attach points. The cabane and inter- plane struts will be attached to soft 30- gauge iron wire “U” loops that straddle the wing ribs and pass through the gussets and Tyvek® reinforcements at the strut attach- ment points. These soft wire “U” loops are installed later while the wings are being covered.
powered by a Renault engine. The tail skid (above right) is one of the distin- guishing features of the Dorand AR.1. Tom used an assortment of material to replicate this feature. Text has details.
After the gussets and reinforcement disks are in place, shape the leading and trailing edges and fine-sand both wings. Set the structures aside for covering later. Build the conventional tail from light and stiff 1⁄16-inch square balsa. Don’t forget to add the gussets at the corners and for the control horns. Sand the edges of the rudder and stabilizer to a rounded section and then fine block sand the structures. Set these aside for covering.
Landing gear and tailskid: The land- ing gear is a distinctive design element of the Dorand AR.1. Short landing gear legs are mounted directly to the underside of the bottom wing which is set beneath the fuse- lage. On the model, this configuration al-
lows the landing gear legs to achieve strength through a laminated balsa con- struction instead of music wire which re- duces weight. Short nylon pins are embed- ded into the landing gear strut ends and cemented with cyanoacrylate glue. These pins plug into the landing gear attachment gussets on the underside of the bottom wing center section. A 1⁄8-inch round reed axle is lashed and ce- mented to the base of each strut with black elastic thread which simulates the real AR.1s bungee shock cord. Short music wire pins are embedded into the ends of the axle and light- weight, vintage-style wheels are bushed and mounted to the wire stub axles. The entire landing gear assembly can be constructed,
Full-size plans available through Carstens Bookstore
www.carstensbookstore.com 28
Order Plan CD447 for $9.00 NOVEMBER 2012
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