I am struggling to nail down the core problem causing my poor starter performance. I am successful in starting the plane 95% of the time, but it usually takes several attempts to get the starter over the first compression stroke. I have owned the plane for less than a year and it had this condition when I bought it. The battery is brand new.
What are the "normal" losses are in the system? Across the battery terminals I am getting about 9.5 to 10 volts when the prop is turning and 9 volts when it stalls. There's a volt or more of loss through the master contactor and ground wire. By the time it gets up to the starter up front there's only about 7 volts left rotating and 5 when it stalls. Clearly not enough.
Any suggestions on how to narrow in on what will fix this?
What are the "normal" losses are in the system? Across the battery terminals I am getting about 9.5 to 10 volts when the prop is turning and 9 volts when it stalls. There's a volt or more of loss through the master contactor and ground wire. By the time it gets up to the starter up front there's only about 7 volts left rotating and 5 when it stalls. Clearly not enough.
Any suggestions on how to narrow in on what will fix this?
