RV-7
Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 25; Flight Crew Total 1950; Flight Crew Type 25
Situational Awareness; Time Pressure; Communication Breakdown
Conflict Ground Conflict; Critical; Ground Excursion Runway
Flight Crew Took Evasive Action
Human Factors
I announced that I was taking Runway XX and would be departing the area to the west. Upon entering runway I announced that I was rolling on XX departing the area to the west. Approximately 500 feet into my takeoff roll as my tail came up I spotted a plane headed straight towards me taking off opposite direction. I pulled power rolled over to side of the runway to the grass as the other aircraft lifted off and quickly rolled to their left. After which I pulled back onto runway and completed my takeoff. Talked to the other pilot in the air. He stated that he did not hear my radio calls. His radio was very weak and scratchy when I contacted him.
RV7 Pilot reported a critical ground conflict during the takeoff roll and took evasive action.