THE PILOT STATED THAT SOON AFTER TAKEOFF THE AIRPLANE DRIFTED TO THE LEFT AND THE LEFT WING CONTACTED TREES ABOUT 30 TO 50 FEET ABOVE GROUND LEVEL. THE PILOT MANEUVERED TO AVOID OTHER TREES AND THE AIRPLANE CONTACTED THE GROUND, COLLAPSING THE RIGHT LANDING GEAR AND STRIKING THE PROPELLER AND RIGHT WINGTIP. THE PILOT STATED HE BELIEVED HE ENCOUNTERED A DOWNDRAFT FROM THE RIGHT DURING TAKEOFF.