Black Horse Wyvern S4 50cc ARTFNow here's a model that you don't see every day. In fact it's probably the first R C ARTF model of the Wyvern anywhere in the world! The Westland Wyvern was one of the very last, single propeller aircraft to enter service with the Royal Navy for strike purposes. She was big, powerful and packed a huge punch. Only one survives today and that was the prototype. Ok, the Black Horse Wyvern does not have the contra rotating scale propellers, although there