A CFI; FLYING A PA22 WITH A STUDENT; TOOK EVASIVE ACTION AT BAZ BY GND LOOPING HIS ACFT TO AVOID A NUMBER OF PARKED PLANES; AFTER THE STUDENT FROZE AND FAILED TO APPLY THE ONLY SET OF BRAKES.

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FLT WAS TRAINING FOR A PLT; WHICH HAD GND LOOPED AND DAMAGED THE ACFT 3 MONTHS PRIOR. PREFLT WAS NORMAL; WITH PARTICULAR ATTN PAID TO ACFT CTLS; RUN-UP; AND PLT TAXI PROFICIENCY. ON TKOF ROLL; RWY 13; PLT WAS SLOW TO ADD PWR; HAD NORMAL DIRECTIONAL CTL PROBS. ABOUT 50 FT IN THE AIR; I; AS CFI; COMMENTED THAT ACFT SEEMED TO BE ACCELERATING SLOWLY. RPM AT BEGINNING OF TKOF ROLL HAD BEEN APPROX 2250 RPM. PLT/OWNER WAS OBVIOUSLY UNCOMFORTABLE; TOO; AND XFERRED CTL TO ME. I TRIED TO CLB STRAIGHT AHEAD; BUT ACFT ONLY GOT TO ABOUT 150 FT AGL. LOOKING FOR FIELDS; I BEGAN A GENTLE L TURN BACK TOWARD THE RWY. ACFT PERFORMANCE CONTINUED TO DETERIORATE. I LINED UP WITH A CLOSED RWY/TXWY 22 WITH HANGARS ON THE APCH END. ON FINAL; I WAS ABLE TO MAINTAIN A DSCNT WITH FULL PWR. WE CLRED HANGARS; PWR LINES; AND WHEN CLOSE TO THE RWY; I REDUCED PWR TO IDLE. 3 POINT LNDG WAS ALMOST IMMEDIATE. AFTER ROLLING 1000 FT OR SO; I TOLD THE PLT (NO BRAKES ON MY SIDE) THAT WE NEEDED TO SLOW; AND GIVE ME A LITTLE BRAKE. WE SWERVED SLIGHTLY R; WHICH I CORRECTED; THEN BEGAN A L TURN. I USED FULL R RUDDER. I CALLED FOR R BRAKE 2-3 TIMES. L TURN CONTINUED TOWARD 3 ACFT PARKED ON THE RAMP. AS I CLRED THEM; I SAW A FENCE AND PWRLINE COMING UP. I HAD ALWAYS REHEARSED AN OFF-FIELD LNDG WHERE I WOULD USE A GND LOOP AS A LAST RESORT TO AVOID OBSTACLES. I DID NOT INTENTIONALLY GND LOOP; BUT FEEL NATURAL REACTIONS MAY HAVE DONE IT TO PREVENT COLLISION WITH FENCE; PWR POLE. NO PLACE IS THERE PUBLISHED MINIMUM RPM FOR TKOF FOR THIS ACFT/ENG/PROB COMBINATION THAT I CAN FIND. LACK OF BRAKES FOR R SEAT IS LEGAL; BUT COMPLICATES RESPONSE.