The FW190 incident was basically a groundloop which resulted in an undercarriage collapse, the propeller flying to bits as it hit the ground under power, and the engine being shock-loaded. The basic structure of the aeroplane appeared to be not too badly damaged, but that was only as viewed from the crowdline. I imagine the repair costs will be substantial, but the owner has vowed to repair the aeroplane and get it back in the air. While a new propeller will need to be sourced, and the engine will need specialist help offshore from NZ, the rest of the repair/restoration will probably be done locally at Omaka Aerodrome as there are some specialist restoration facilities based there. The FW190 involved in the incident was the prototype of the new-builds from recent years.
As for the V1, it is mostly constructed from timber and polystyrene. And as I mentioned in a previous post, it is electrically-powered once it has been launched. It appears to use a bank of lithium batteries to feed the five electric motors. The actual launch itself is achieved using rubber bungies which are tensioned before launch, then the V1 is released. All of the smoke seen in my photographs was created purely for dramatic effect. I heard that the project cost NZ$10,000 to build.