Here's a dry fit of the improved mount.
The BT-20 sticks out the back by about 1/8".
This puts the engine about 5/8" forward from where is was before.
With the engine hook farther up it doesn't move enough to allow the engine to slide in easily.
I filed the shallow notch to allow more engine hook movement.
Here's the tail end fix.
The hollow plastic nose cone got .30 oz. of clay nose weight.
It was tamped in place with a dowel.
This thing will fly stable!
EDIT: Now stable? Nope!
After these fixes - On February 7, 2015 another flight with an Estes B6-4 proved it was only marginally stable. The model was thrown away! I saved the 18" Porky Pig parachute.
And still be butt ugly.
ReplyDeleteAgreed! Ugly and stable.
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