Hi Dave,
For the run today I was testing a JP Pro 600 motor...Battery was a 3800 NiMh that came with the boat. Prop is 35m 2 blade SR type GFN.
Can't really say run time as I used one battery for the first 10 plus mins test and then a fresh one for the final running and was still going strong after approx 20 mins but not too much flat out running...will do a proper run time check next time out.
Dale