Here is a little blurb on Joe's new Viper he sent me in an email today:
The airplane you saw is my new "Viper" as I crashed the old RoJett .51 powered one last summer preparing for Brodak's. The wing and landing gear survived, as I put it into the concrete inverted while working on outside square loops.
Here are some photos of the new (repaired) electric Power 25 motored Viper.