Rocketjunkie
Addicted to APCP
- Joined
- Jan 19, 2009
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This is a quick build thread on the rack rockets I've been flying. This one is a 3 stage using Estes F15 motors.
The motors are 4.5" long and I use 5/8" masking tape for a thrust ring on the top motor so the rack needs to be 9-5/8" long.
The rails and supports are basswood, fins are balsa. Body tubes and nose cones are from Apogee.
Here are the pieces of wood with the parts marked.
The overall dimensions of the rails are 12" x 3/8" x 3/16", supports are 1-3/16" x 1" x 1/8", fins are from 1/8" balsa. The line across the basswood sheet is at 9-5/8, the rear of the body tube.
Cut out all the parts
Bevel the ends of the rails, sand the ends of the supports to 45 deg, and round the leading and trailing edges of the fins.
Using a spent 29mm motor, lightly friction fit the body tube to a second one that has alignment lines on it.
The motors are 4.5" long and I use 5/8" masking tape for a thrust ring on the top motor so the rack needs to be 9-5/8" long.
The rails and supports are basswood, fins are balsa. Body tubes and nose cones are from Apogee.
Here are the pieces of wood with the parts marked.
The overall dimensions of the rails are 12" x 3/8" x 3/16", supports are 1-3/16" x 1" x 1/8", fins are from 1/8" balsa. The line across the basswood sheet is at 9-5/8, the rear of the body tube.
Cut out all the parts
Bevel the ends of the rails, sand the ends of the supports to 45 deg, and round the leading and trailing edges of the fins.
Using a spent 29mm motor, lightly friction fit the body tube to a second one that has alignment lines on it.