AERONCA CHAMP PLT PRACTICING XWIND LNDGS HAS RWY EXCURSION.

Narrative

I DEPARTED LAKEWOOD ARPT; NJ; USING RWY 6 INTENDING TO REMAIN IN THE PATTERN TO GAIN ADDITIONAL EXPERIENCE (TKOF AND LNDG) IN (FLYING CLUB X) AERONCA CHAMP. I HAVE ABOUT 600 HRS IN CONVENTIONAL GEAR ACFT BUT WANTED TO PRACTICE IN A MODERATE XWIND (ABOUT 8-10 MPH FROM L; VARIABLE FROM ALMOST HEAD-ON TO PRACTICALLY AT TAIL). ON FIRST LNDG ATTEMPT I USED SLIGHT PWR-ON APCH AND DSCNT AND ALLOWED FOR A CRAB INTO WIND. PRIOR TO FLARE; CARB WAS KICKED OUT; FLARE WAS NORMAL (STICK INTO WIND; DIRECTIONAL CTL MAINTAINED WITH RUDDER); TOUCHDOWN (3 POINT) WAS ACCEPTABLE AND ROLLOUT BEGAN. SECONDS LATER; ACFT VEERED VIOLENTLY TO L CAUSING ME TO HIT R RUDDER AND BRAKE AND PUT STICK TO L AS FAR AS POSSIBLE. ACFT CONTINUED OFF RWY (TO L) STRIKING R WINGTIP AND NOSING INTO SOFT SAND AT EDGE OF RWY. DAMAGE WAS CONSIDERED SUBSTANTIAL INCLUDING BUCKLED R WING; PROP STRIKE AND POSSIBLE COWL AND FRAME. NO DAMAGE TO PROPERTY. SLIGHT BRUISES TO PLT (ME). NOTE: GND OBSERVERS ADVISED; 'WIND WENT ALMOST 180 DEGS (TOWARD TAIL) AT TOUCHDOWN.' IN FACT; ARPT REOPENED MINS LATER WITH 'ACTIVE' CHANGED TO RWY 24. ALSO; JUST MONTHS EARLIER; ANOTHER PLT HAD EXPERIENCED A SIMILAR INCIDENT IN THIS SAME ACFT. OTHER CLUB MEMBER PLTS HAD ALSO STATED ACFT SEEMED TO 'BEHAVE BADLY' ON LNDG AND ROLLOUT. SINCE DIRECTIONAL CTL WAS NOT MAINTAINED I MUST ACCEPT RESPONSIBILITY FOR THIS INCIDENT. HOWEVER; I BELIEVE A FLUKY WIND CONDITION AND POSSIBLE MECHANICAL SIT WITH THE ACFT MAY HAVE CONTRIBUTED.