Friday, February 24, 2017
Estes Skydart II #3229 Build, Part 2, Centering Ring Prep
The thick ring didn't have flat sides. Considering it sits flat against the washer weights I sanded the raised rings even and smooth.
The cut of the engine mount tube wasn't clean. This was also evened out with the sanding block.
I don't like to force centering rings over body tube ends. These rings had some raised crimps on the inside and wouldn't easily fit over the internal BT-20.
First, the end of my X-Acto handle was rolled over the inside to press the crimps down. The ring still wouldn't fit over the tube.
If you have to do this, try to lift as little of the paper as you can. It's easy to remove too much.
One ring fit well, the other ended up too loose. The inset picture shows the ring of glue on the inside to build up the diameter. Let the glue fully dry before thinking about gluing it in place.