Hi to all:
I have been running a four stroke Magnum 120 size with 15% fuel and a Master Airscrew K series tacking 8,900 rpm.
this engine weights 32 oz.
I'd like to have more punch for my Carl Goldberg Ultimate and I have been thinking on the:
Two stroke
OS 120 AX which weights 31 oz.
But I do not know how it performa and which prop is it capable of turn with enough power.

Thanks for any advise.