realbricky
New member
I've got an 18ft G3 Tunnel
I've got an 18ft G3 Tunnel with a 90 2 stroke Yamaha. Dealership installed 4 blade SS prop with a (17 pitch I think). I only got 30 mph at 3800 rpm max. I borrowed a friends prop off his 60 hp yamaha and now I get 34 mph at 5200 rpm. Is this where I should be or can I get more speed. My friend says he can go 34 with his 60 on an 18ft ( not a tunnel).
I've got an 18ft G3 Tunnel with a 90 2 stroke Yamaha. Dealership installed 4 blade SS prop with a (17 pitch I think). I only got 30 mph at 3800 rpm max. I borrowed a friends prop off his 60 hp yamaha and now I get 34 mph at 5200 rpm. Is this where I should be or can I get more speed. My friend says he can go 34 with his 60 on an 18ft ( not a tunnel).