Friday, June 7, 2019

Estes Saturn V #1969 Build, Part 25, Reinforcing The Fairings Part 2

Look close at the right side picture. There is a pencil line inside the edge of the fairing. The disk will be glued inside that border.

The contact cement is brushed on the fairing up to the pencil line and on the body tube edge.  Cement is also brushed onto the disk reinforcement piece.

Don't let the contact cement totally dry!
While it is still wet you can slide and adjust the position. If the glue was to dry, it will stay where it is first set down.

There should be a slight overlap on the inside of the tube edge.
This is shaved off with a new X-Acto blade. Go slow and cut the reinforcement crescent piece, not the body tube edge.

After shaving off the overhang, lightly sand with 400 grit.

For a cleaner finished look, the reinforcement crescent piece was set a little inside the round edge of the fairing.
In the end you'll have a much stronger fairing and fin assembly with hardly any added weight.


Here's the PDF that includes the slightly larger #2157 3rd Stage shroud, four reinforcement crescents and a full size wire anchor pattern.
The full-size wire anchor template is not in the current instructions.
Print this PDF on 110 lb. card stock.

If you are a Patreon supporter, email me at:
oddlrockets@bellsouth.net
and request the #2157 3rd Stage Shroud PDF.
Print on 110 lb. card stock.

Assembly time so far:
14:10 minutes previous
  1:00 minutes this post
  1:00 to draw up PDF
16:10 Total so far

1 comment:

  1. Excellent call on the reinforcement, I think. I did the same but rather than yet another type of glue, I went two surface application of the 3M 77. I cut the moons out the way you describe, sprayed one side of them. I cut a half-circle in the center of the remaining sheet of paper and used that as a mask to spray the bottoms of the fairings. Important safety tip... don't try to wiggle the reinforcement as it will tear the fairing. Oops. I repaired that with a quick swipe of liquid plastic cement. -Homer

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