30 years old Kyosho Jet Stream with new brushless setup

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My 30 years Vintage boat Jet Stream GP-10 witn new Brushless Setup
Tested with different propellers and Lipo batteries:
1.st test run with carbon K-Series graupner prop 33m 3blade and 3S lipo 2650mah 30C
2.nd run with the same prop but bigger 36mm 3 blade and the same battery
3rd run with 42mm 2 blade prop and 2S 4000mah 30C lipos
4th run with 36mm 3 blade prop and 2S 4000mah 30C lipo
5th run with 40,5mm 2 blade prop and 3S 2650mah 30C lipo (on this test I lifted up angle of axle cca.3-4mm )
6 -last run again put it 36mm 3 blade prop and 3S 2650mah 30C lipo.
I think the best run is with 40,5mm 2 blade prop,but the motor and controller is a little hot.

Motor: Turnigy AquaStar 2842-2800KV


ESC: 50Amp from this boat:


Lipos:




propellers:








thats it..