RPTR ATTEMPTS THE IMPOSSIBLE: TAKING OFF WITH ONLY ABOUT 1400 FT OF RWY LEFT IN A HEAVILY LOADED SMA.

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THE ATIS RPTED THAT A PORTION OF RWY 18 S OF THE INTXN AT RWY 29 WAS CLOSED WITH MEN AND EQUIP WORKING ON IT. I WAS HEAVILY LOADED IN AN SMA WITH 6 PAX. WHEN I REQUESTED AN INTXN TKOF AT TXWY D; TWR INFORMED ME THAT THERE WAS 1600 FT OF RWY LEFT BEFORE THE CLOSED PORTION. I ELECTED TO TKOF. MY REASONING WAS THAT WE ROUTINELY TKOF FROM A GRAVEL STRIP AT 'EEK' WHICH IS ONLY 1400 FT. THERE WAS A 5 KT WIND OUT OF THE S. ACCELERATION SEEMED UNUSUALLY SLOW; THAT SHOULD HAVE BEEN MY FIRST CLUE! REMEMBER NOW THAT IT SEEMED WARMER AND MORE HUMID THAT MORNING. I CONTINUED THE TKOF RUN IN THE HOPE THAT I WOULD GET AIRBORNE. IN A LAST DITCH ATTEMPT TO GET AIRBORNE I PULLED ON FULL FLAPS AND LIFTED THE NOSE UP. I WAS STILL TOO SLOW AND HVY TO LIFT OFF. WHEN I SAW THAT I WAS ABOUT TO OVERRUN THE CLOSED PORTION; I STEERED R TO AVOID THE CONES AND MISSED THEM ON MY L. I ALSO MISSED A SIGN OF THE R. I REMEMBER LOOKING BTWN THE CONES AND THE SIGN (IF YOU DON'T WANT TO HIT SOMETHING DON'T LOOK AT IT!). I CHOPPED THE PWR AND TURNED AROUND. I DID NOT COME CLOSE TO ANY OF THE MEN OR MACHINERY. THE ONLY THING THAT SAVED ME FROM MY BAD JUDGEMENT WAS MY STICK AND RUDDER SKILLS AS A BUSH PLT AND FORMER GRAND CANYON PLT. THIS IS THE CLOSEST I HAVE EVER COME TO BITING IT ON TKOF. I TAXIED BACK THE FULL LENGTH OF RWY 18. ON RUNUP THE ENG DEVELOPED FULL PWR; I TOOK OFF AND MADE AN UNEVENTFUL FLT. THE ACFT WAS NOT DAMAGED IN ANY WAY AND NO INJURIES WERE INFLICTED. MY BIGGEST MISTAKE WAS NOT TAKING OFF FROM TXWY B OR FULL LENGTH AT TXWY A. WHEN THERE IS ANY DOUBT; THERE IS NO DOUBT! ESPECIALLY ON A SHORT FIELD IN A NEAR GROSS ACFT. THE MOST USELESS THINGS ARE THE ALT ABOVE YOU AND THE RWY BEHIND YOU!