It was the first flight (and last). I believe Shawn 'thought' there was a slight turn in the trim. It was a breezy day and my guess is the wind won over the slight trim turn.

OK, I'll stop hijacking the thread. :D

Hi all,

Well, after several months of volunteer work, etc., it's back to the rockets. I have a Semroc Goliath under construction as practice for the Ranger 3 motor cluster build.

I have a question though... After assembling the motor tubes, installing the blocks, and installing the group into the rear of the model, the lower body appears somewhat oval shaped. I can't tell if it's an optical illusion due to the 3 closely spaced tubes that are glued inside or ?

Plenty of time was allowed between steps, and all was as straight as a non-jigged assembly can be (built over a plate glass sheet and Tamiya cutting mat & used a flat wooden block to seat the assy.) Now, after the glue has dried, I've noticed that while handling said unit one can hear the motor tubes "click" when the tube is slightly tweaked from handling. Glue was applied ~1 3/4" of the way from the rear and ~ 1/4 of an inch from the rear. When the 3 motor cluster BB was built years ago, none of this cropped up. Any ideas?

Bob

p.s. Who has fin marking wraps for Centuri tubes? I really like Semroc kits but HATE the marking "guides" Finally used 3M blue tape to hold the tube to the printed guide in order to hold it in to place for marking. I'd hazard a guess that the printing process doesn't allow matching to the body tubes.

Payload Bay has a fin marking guide and other great rocketry tools.

http://www.payloadbay.com/page-Tools.html