GEAR UP LNDG.

Narrative

ON A FLT FROM LEBANON; NH TO MOBILE IN A CESSNA P-210; I STARTED MY LETDOWN FROM 16500 FT ABOUT 90 MI NNE OF MOBILE. IN ORDER TO AVOID SHOCK COOLING TO THE ENG; I USED; FOR THE FIRST TIME; SPD BRAKES; WHICH WERE INSTALLED ON MY NEWLY PURCHASED ACFT. ON THE WAY DOWN; I EXPERIMENTED WITH THEM TO DETERMINE AVERAGE LOSS OF AIRSPD AND ALT. WHEN I ENTERED THE ARPT PATTERN AT ABOUT 140 KIAS; I AGAIN USED THE SPD BRAKES TO SLOW ME TO 110 KIAS. THEN AGAIN ON FINAL TO REDUCE SPD TO 80 KIAS. IN THE PROCESS I BECAME SO TRANSFIXED IN THE PERFORMANCE OF THE SPD BRAKES THAT I NEGLECTED TO LOWER MY LNDG GEAR AND COMPETED A PERFECT (VERY SLOW) LNDG. I SHOULD ALSO NOTE THAT AFTER REDUCING PWR I DID NOT HEAR A GEAR UP HORN AND DO NOT BELIEVE IT SOUNDED UNTIL AFTER I CAME TO A STOP ON THE RWY. I ACTUALLY DIDN'T THINK I HAD LANDED GEAR UP; BUT INITIALLY THOUGHT THAT MY PROP HAD STRUCK SOMETHING ON THE RWY. IT WAS A VERY SLOW AND EASY LNDG AND I SUFFERED NO PHYSICAL HARM TO MYSELF (JUST MY PRIDE). DAMAGE TO THE ACFT WAS QUITE MINIMAL: BENT PROP; ABOUT 6 FT OF TORN SKIN AND LOSS OF ANTENNAS. A PRELIMINARY CHK INDICATED NO DAMAGE TO THE ENG.