RE: Few Sig wonder ??
Seriously gentlemen:
For you none believers, A wonder is a fast flying kit plan.
Look at the spec's of Q500, boxy fuselage, exposed engine and airfoil is 1 3/8" thick.
Fuselage has to remain square. 2 in square at firewall to 3.5" square at the wing mount.
wing is 10" X50" constant cord and weighs 3.5 to 3.75 pounds.
fuselage is over 2 feet long with a large v-tail
Quickee's use a Q500 Jett or Nelson at 2.5 HP. and flies at 206 MPH maximun speed recorded.
Wonder stock wing thickness is the same, fuselage smaller and less wing area.
Use a thinner airfoil, keep the weight about 2.5lbs with a 2.2 HP .21 Rossi with tuned muffler at 24k RPM and speed speaks for itself.