Model Forum / General / Rockets / November 2005

  I'm trying to reduce the pile of kits waiting to be built and am working on a
Stretch Blobbo kit that have had for  a few years.  It comes with a steel
fishing line leader for the shock cord mount.  How well do these hold up to the
heat, flame and corrosive residuals of ejection charges?  It is covered with a
plastic tube (heat shrink) which will protect the metal, at least for a while.
Also I'm modifying the design of the motor mount a bit, I'm stretching it to
take the E9 motors and also adding another centering ring so the fin tabs can be
filletted on the front and back as well as inside the tube, and I'm going to
bring the steel leader out at the side of the forward centering ring, by the
wall of the body tube, rather than have it come right up the middle, so it will
be a bit less exposed to the ejection charges.  However I am somewhat concerned
that it may corrode and break after a few flights.  Has anyone had any problem
with these?

  Thanks.

Jonathan
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Jonathan Sivier
Secretary, Central Illinois Aerospace
jsivier AT uiuc.edu
NAR #56437
Tripoli #1906
CIA Web Site: http://www.prairienet.org/cia/
Home Page: https://netfiles.uiuc.edu/jsivier/www/