Hanriot HD-1 (oz1866)

About this Plan

Hanriot HD-1. Scale free flight model biplane fighter for CO2 power.

Quote: "A good choice for a first CO2 free flight scale model by Bill Dennis.

This very simple and straightforward model was designed and built in less than a week. It was intended to be flown outdoors, but careful wood selection may make it suitable for indoors. I used cyano glue throughout, which speeded up assemly a good deal. The metal to wood joints in the undercarriage and cabane were reinforced with cyano and baking powder. I said it was a quick model, so let's get started.

Fuselage. Build the basic sides from 1/16in square and assemble over the plan - this is made easy by the straight top longeron. Note that the side view is slightly over-long to compensate for the taper. Make up F1 and the engine mount, and also a former for moulding the cowling. This is made from papier mache as described recently for the CO2 Sopwith Pup (oz1838) from Aeromodeller, October 1984. Attach the undercarriage and cabanes, followed by the top decking formers which have the same radius as F1. Glue 1/32 in blanks in place for the rear top decking and carefully sand to shape with a long sanding block. When satisfied, glue the five 1/32 in sq basswood stringers in place.

Tape a piece of writing paper down flat and give it two coats of dope. Develop the shapes of the forward top and side decking with tracing paper, transfer to the notepaper and test for fit. Glue in place after covering.

Wing and Tail. To save weight, every other rib is cut down to the pattern shown. The lower wings are flat and built as one piece. Lengths of 22 swg wire are epoxied across the centre section to give strength in this one-piece model.

The simulated ailerons are well worth doing, and very easy. In my view, these are essential for realism in a scale model - more so than the correct number of ribs, etc. With a sharp knife, cut a rebate 3/32 wide by 1/32 deep in each rib..."

Supplementary file notes

Article page, text and pics, thanks to StewartHindle.

Corrections?

Did we get something wrong with these details about this plan (especially the datafile)? That happens sometimes. You can help us fix it.
Add a correction