2inch EXPERIMENTAL 6xD12 BUILT BY DAVE THOMSON ROCKET CONSTRUCTION EXPERIMENTAL 2inch DIAMETER ROCKET
I have now been using this material for a number of years and made numerous rockets out of it. You can use epoxy, cyno and PVA glues to build them. Neater edges can be made so long as you use sharp instruments. The most difficult part with this material is cutting the slots for the through the wall fins. A combination of Solar-Trim and painting was done to decorate the model. The rocket was base coated in white. The black portions are Solar-Trim. This material is easy and quick to work with (No mess and masking). It also gives a great finish. Weight is around 24oz without motor. NOSECONE The nose cone is home-made and turned on a Black and Decker drill from solid balsa. This is glued to a section of tubing making the nose cone and payload section around 14inches long. The nosecone is smoothed on the drill with fine sandpaper and then sealed with PVA glue before final coating/filling etc. Done carefully no balsa grain is visible. FINS Fins are made from 1.5mm formica. This material is a little brittle but this nad very strong giving very little drag. Fins are through the wall onto the motor mount tube. MOTOR MOUNT The motor mount tubes are made from standard Estes BT50 tubing. Three tubes can be mounted into the base of these tubes for a 3xD12 cluster. Scrap balsa is then used to fill in the gaps that are left. Care has to be taken to ensure the motor tubes do not twist when mounting into the airframe. The second stage was made separately in a similar way. The transition coupling was made from a short piece of 2inch tube with a 1 inch overlap onto the body tube (slots cut part way to locate over lower secion of the fins) and is a snug fit to the second to ensure no 'slop' but loose enough to be blown off during second stage ignition. RECOVERY SYSTEM I use a 24inch diameter home-made parachute made of red ripstop nylon. FLIGHT
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