PIPER PAWNEE PLT HAS NMAC WITH PIPER SUPER CUB AT UNCTLED ARPT.

Narrative

MY ACFT (#1) WAS EXECUTING A GAR DUE TO BOTH GLIDER RWYS BEING FOULED. I HAD ANNOUNCED MY INTENTIONS OF THE GAR WHILE TURNING FINAL FROM BASE TO FINAL ON UNICOM. APPROX MID FIELD; THE #2 ACFT ASKED 'WHAT ARE YOU DOING? CHK YOUR 3.' I REPLIED; 'I AM GOING AROUND; THE RWYS ARE OCCUPIED;' AT THE SAME TIME OBSERVING THE YELLOW CUB PASSING SLIGHTLY BELOW ME TO THE R AND A 90 DEG ANGLE APPROX 100-200 FT. AN UNEVENTFUL LNDG WAS PERFORMED ON THE NEXT APCH. THE TOW PLANES AT THIS ARPT USE A NONSTANDARD PATTERN ENTRY FROM A MIDFIELD; OR ACTUALLY CLOSER TO THE APCH END OF RWY 8R. OVERHEAD XWIND AT 500 FT AGL; WITH A TIGHT L TURN ONTO THE RWY THAT IS WELL INSIDE AND BELOW THE STANDARD PATTERN FOR OTHER ACFT USING RWY 8R. I BELIEVE THE ACFT ON THE GAR HAS THE RIGHT-OF-WAY IN THIS SIT AS ANY ACFT IN THE PATTERN OR ON GAR. OF COURSE; THIS DOES NOT RELIEVE HIM FROM BEING VIGILANT FOR OTHER TFC. I BELIEVE FURTHER VIGILANCE ON THE PART OF THE ACFT ENTERING THE TOW PLANE PATTERN COULD HAVE AVOIDED THIS INCIDENT; AS WELL AS ALERTNESS ON THE PART OF THE GAR ACFT TO SPOT THE SIT SOONER.