Narrative:

Traffic had generally been using runway 8, but occasionally runway 26. Runway 8 is favored even with light west winds due to lack of obstructions descending terrain to the east. WX partly cloudy, isolated high base showers, temperature approximately 85 degrees. Winds were light and variable to light from west, so taxied out to use runway 8. Traffic was using runway 8. During run-up, noted shower to northwest, few drops on canopy. Taxied into position on runway 8. Windsock indicated approximately 5 KTS from west. Began takeoff. Heard unicom note wind shift/increase in speed. Decided to continue, as sock nearest to me still showed approximately 5 KTS from west. As soon as tail came up, glider swung sharply to left. Pulled stick back to stop, full right rudder, full left stuck, arrested swing, but would not go right. Left runway at approximately 30 degrees off course. Cut throttle, applied full brake, headed for tow planes, gas truck, and fence row. When it became obvious glider wouldn't stop before hitting something, neutralized ailerons, and applied left rudder. By this point, speed approximately 10 KTS. Slid to stop after rotating 90 degrees approximately 25 ft from gas truck/fence. Gear damage, propeller strike, damage to underside of right wingtip. No injuries, no damage to anything except aircraft. Observers noted sudden wind gusts greater than 15 KTS from northwest, probably just after beginning of my takeoff and probably coming from virga/shower just to northwest approximately 3 mi. Factors: density altitude, maximum gross takeoff, low pwred aircraft, taildragger. PIC had been up since XA00, flown already on hot day poor judgement by PIC. I've flown at boulder approximately 10 yrs. Should have know better than to attempt takeoff given conditions. Saw shower, few drops on canopy. Heard unicom response to request by another aircraft for conditions. At start of takeoff, saw only approximately 5 KTS straight on my tail, but this changed very rapidly. Pilots were busy tying down tow planes during my takeoff. There have been far too many incidents of this type. I should have been much more conservative.

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Original NASA ASRS Text

Title: PLT OF A TAILWHEEL MOTORIZED GLIDER LOST CTL DURING TKOF ROLL RESULTING IN GOING OFF SIDE OF RWY AND GND LOOPING. THE ACFT LNDG GEAR, PROP AND R WINGTIP WERE DAMAGED.

Narrative: TFC HAD GENERALLY BEEN USING RWY 8, BUT OCCASIONALLY RWY 26. RWY 8 IS FAVORED EVEN WITH LIGHT W WINDS DUE TO LACK OF OBSTRUCTIONS DSNDING TERRAIN TO THE E. WX PARTLY CLOUDY, ISOLATED HIGH BASE SHOWERS, TEMP APPROX 85 DEGS. WINDS WERE LIGHT AND VARIABLE TO LIGHT FROM W, SO TAXIED OUT TO USE RWY 8. TFC WAS USING RWY 8. DURING RUN-UP, NOTED SHOWER TO NW, FEW DROPS ON CANOPY. TAXIED INTO POS ON RWY 8. WINDSOCK INDICATED APPROX 5 KTS FROM W. BEGAN TKOF. HEARD UNICOM NOTE WIND SHIFT/INCREASE IN SPD. DECIDED TO CONTINUE, AS SOCK NEAREST TO ME STILL SHOWED APPROX 5 KTS FROM W. AS SOON AS TAIL CAME UP, GLIDER SWUNG SHARPLY TO L. PULLED STICK BACK TO STOP, FULL R RUDDER, FULL L STUCK, ARRESTED SWING, BUT WOULD NOT GO R. LEFT RWY AT APPROX 30 DEGS OFF COURSE. CUT THROTTLE, APPLIED FULL BRAKE, HEADED FOR TOW PLANES, GAS TRUCK, AND FENCE ROW. WHEN IT BECAME OBVIOUS GLIDER WOULDN'T STOP BEFORE HITTING SOMETHING, NEUTRALIZED AILERONS, AND APPLIED L RUDDER. BY THIS POINT, SPD APPROX 10 KTS. SLID TO STOP AFTER ROTATING 90 DEGS APPROX 25 FT FROM GAS TRUCK/FENCE. GEAR DAMAGE, PROP STRIKE, DAMAGE TO UNDERSIDE OF R WINGTIP. NO INJURIES, NO DAMAGE TO ANYTHING EXCEPT ACFT. OBSERVERS NOTED SUDDEN WIND GUSTS GREATER THAN 15 KTS FROM NW, PROBABLY JUST AFTER BEGINNING OF MY TKOF AND PROBABLY COMING FROM VIRGA/SHOWER JUST TO NW APPROX 3 MI. FACTORS: DENSITY ALT, MAX GROSS TKOF, LOW PWRED ACFT, TAILDRAGGER. PIC HAD BEEN UP SINCE XA00, FLOWN ALREADY ON HOT DAY POOR JUDGEMENT BY PIC. I'VE FLOWN AT BOULDER APPROX 10 YRS. SHOULD HAVE KNOW BETTER THAN TO ATTEMPT TKOF GIVEN CONDITIONS. SAW SHOWER, FEW DROPS ON CANOPY. HEARD UNICOM RESPONSE TO REQUEST BY ANOTHER ACFT FOR CONDITIONS. AT START OF TKOF, SAW ONLY APPROX 5 KTS STRAIGHT ON MY TAIL, BUT THIS CHANGED VERY RAPIDLY. PLTS WERE BUSY TYING DOWN TOW PLANES DURING MY TKOF. THERE HAVE BEEN FAR TOO MANY INCIDENTS OF THIS TYPE. I SHOULD HAVE BEEN MUCH MORE CONSERVATIVE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.