01-14-2017, 06:34 PM
|
|
Master Modeler
|
|
Join Date: Jan 2009
Location: Fairbanks, Alaska
Posts: 6,507
|
|
Quote:
Originally Posted by jdbectec
the quest Astros paper tube is 8 3/8 inches long. The length of the paper tube plus the plastic fin units is 10 and 3 quarters inches. I hope this helps
|
Thank you very much! This means that the Astra III's body tube is 1-2/8" (properly expressed as 1-1/4" or--in decimal notation--1.25") shorter than the newer-type E-Z Payloader's 9-5/8" long body tube; the Astra III's body tube *looked* a little shorter than the E-Z Payloader's in the photographs, but their oblique-view depictions made it virtually impossible to be sure. Also:
I'll have to measure it to be sure, but the damaged end of my E-Z Payloader's body tube that has the "spiral crease" (it's not huge and glaringly noticeable, but it is a weak area that would sooner or later buckle under the launch acceleration and/or landing impact loads [or perhaps rupture from the ejection charge over-pressure loads]) may be 1-1/4" or shorter. If so, I can just trim off that creased section and then glue the fin unit into that end of the body tube.
|