PLT OF AN SMA SEL EXPERIMENTAL ACFT DAMAGED THE AILERONS BY MAKING A FAST ACFT ROLL RATE RESULTING IN ONE AILERON BECOMING INOP AND COLLAPSING THE NOSE GEAR AFTER SEVERAL BOUNCES DURING LNDG.

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WHILE CRUISING ON A VFR FLT FROM MCALLEN; TX; TO LEANDER; TX; I DECIDED TO CHK L TO R ROLL RESPONSE OF THE ACFT BY MOVING THE STICK L AND R RAPIDLY. I HAVE DONE THIS SEVERAL TIMES BEFORE. AFTER ABOUT THE 5TH REVERSAL; THE ACFT WANTED TO CONTINUE TO ROLL TO THE R. I WAS ABLE TO HOLD THE WINGS LEVEL BY FORCING THE CTL STICK HARD L. I THEN NOTICED THAT THE R AILERON AND L AILERON WERE BOTH IN THE UP POS. THE L AILERON SEEMED TO MOVE FREELY BUT THE R AILERON HAD LITTLE TO NO MOVEMENT. I CHKED AILERON CTL LINKAGES RUNNING THROUGH THE CABIN AND ALL WERE CONNECTED OK. OF COURSE; THERE WERE NO ARPTS IN THE VICINITY AND I CONSIDERED LNDG IN A FIELD BUT DECIDED AGAINST IT DUE TO THE NOSEWHEEL CONFIGN OF MY ACFT (EXPERIMENTAL SMA SEL). I CONTINUED ALONG THE INTENDED RTE OF FLT INTENDING TO LAND AT A HARD SURFACED RWY. HOWEVER; MY ARMS WERE SO TIRED FROM HOLDING HARD L STICK FORCES; THAT I DECIDED TO LAND AT THE FIRST ARPT I CAME TO; EVEN THOUGH IT WAS A GRASS RWY AT ZUEHL FIELD; A PRIVATE ARPT. BEING UNSURE OF THE SLOW SPD HANDLING OF THE ACFT; I APCHED FASTER THAN NORMAL AND FORCED THE ACFT ONTO THE RWY EARLY. THIS RESULTED IN SEVERAL BOUNCES BECAUSE OF THE ROUGH RWY AND TIRED ARMS. THE LAST BOUNCE COLLAPSED THE NOSE GEAR AND BENT THE PROP. CAUSE OF THE CTL PROB WAS INTERFERENCE OF LOWER WING SKIN AND R AILERON LEADING EDGE AT AN ALUMINUM LAP JOINT ON THE AILERON. I BELIEVE THAT MY BRISK MOVEMENT OF THE STICK MAY HAVE DISTORTED THE AILERON ENOUGH TO CAUSE CONTACT WITH THE LOWER WING SKIN WHICH FITS CLOSE LIKE A GAP SEAL. I WISH I HAD CONTINUED TO A HARD SURFACED RWY.