Incident Overview
A pilot reported that during takeoff, the airplane accelerated normally and became airborne between 1,000 and 1,200 feet down a 2,500-foot runway. While airborne, the pilot observed a positive rate of climb but felt the climb rate was less than expected.
Decision to Abort
Believing the climb was insufficient, the pilot decided to abort the takeoff and reduced engine power. However, he then realized that insufficient runway remained to land the airplane. As he was adding power to abort the landing, the airplane contacted the ground.
Departure from Runway
After contacting the ground, the airplane departed the runway and traveled approximately one-quarter mile beyond the runway end before colliding with a log, where it came to rest.
Pilot's Explanation
The pilot attributed his perception of inadequate climb to an optical illusion caused by rising terrain and a rising runway, which made him feel that the airplane was not climbing adequately.
Examination of Factors
No other factors were identified in the pilot's report. The airplane's performance during the initial takeoff roll and climb was normal up to the point of the aborted takeoff. The pilot's decision to abort was based on his subjective assessment influenced by the optical illusion.