12-31-2023 Swing Tests
Finished the motor mount. Holes are for the Kevlar shock chord. The divider keeps everything in it's place until ejection.
CAD models and drawings also updated to "As Built"... see 12-26-2023 below.
12-29-2023 Motor Mount Day 03
I glued in the ejection tube, then cut and glued the corrugated cardboard upper centering ring.
12-28-2023 Motor Mount Day 02
I chucked the motor mount into the wood lathe and turned the centering rings from 2-1/2" dia. down to 1.810 dia. for a slip fit into the rear of the rocket.
Next up is gluing the centering ring into the 29mm tube for the ejection conduit tube. I'll be using quite a bit of wood glue, covering the inner and outer surfaces of this ring to add strength.
12-27-2023 Motor Mount Day 01
Started building the rear eject motor mount. I used a 2-1/2" and a 1-1/8" hole saw for the 2 large rings, then used the drop from one of those rings for the end ring in the 29mm tube.
All rings were made from 1/4" plywood, then sanded down to 0.150" thick.
I decided to try something a bit different for the motor hook. It's much shorter than a standard hook and is retained only by the rear centering ring. Clear shipping tape was wrapped 3 times around the 29mm tube and then masking tape will secure the hook to the motor.
12-26-2023
Updated 12-30-2023:
I created a CAD Solid Model and then knocked out a couple drawings to aid in making the motor mount.
OpenRocket supplies sufficient data for the fuselage.
12-23-2023
The Spirit Of Christmas 2023
12-17-2023
Photo Shoot
12-16-2023
More gluing photos.
12-15-2023
Cut the fins from 1/4" plywood. Sanded them to size, then routed the radi on the fins edges. Used my fin alignment fixture and started gluing the fins to the body. Then... added fillets.
12-14-2023
Sanded the body / nose sub-assy on the wood lathe and made cardboard templates to cut the wings and vertical stabilizers.
12-13-2023 Screw Eye and Gluing The Nose Cone To Body
I installed a 3/16" x 3" screw eye to be used with the Kevlar shock chord.
The body I.D. was sanded in the wood lathe, and then the nose cone was wood glued to the body
12-12-2023 Turning Nose Cone and Body
Turned the Nose Cone and the Body on the wood lathe from a scrap piece of 4 x 4 Spruce.
For the body I bored thru the 4 x 4 with a 2" Forstener bit, then chucked on the I.D. and turned the O.D. First time I've done that and it worked out well.
For the nose cone I used a faceplate, then turned and bored the part.
12-10-2023 Preliminary Design
The Plan:
Here's a 29mm rear eject powered version of the 2023 Estes Ornament.
Fabrication Theory:
Turn the nose cone and body tube on the wood lathe from a piece of pine. Then add the plywood fins and balsa wood pods.
Length approximately 15-3/4" and 2-1/2" diameter.
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