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Bravo 1 FS Question
Wanting to try a Bravo 1 FS on my 19 ft center console bay boat running a Yamaha 175 SHO. Current prop is a Powertech TRO series 4-blade, 13 3/4” x 21. According to Powertech it’s supposed to be similar to a Trophy. If I go with the same pitch in the larger diameter (15 1/4”) Bravo 1 FS, should I still expect the engine rpm’s to increase some due to the Bravo 1 FS design?
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I had an underpowered 18' CC with a 115 Yamaha on it (even though the boat had a max motor of 115 sticker). I swapped to a Powertech SCD4 4-blade and it changed the boat entirely. Did not gain any top-speed, but the hole-shot was superb. The boat was actually enjoyable to drive with that prop. Pretty easy prop to turn too, which I think is what the small Yamaha motors need.
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What are your rpm's and top speed with the Powertech?
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Getting 56 mph at 5600 rpm. Max rpms for my motor is 6000, so I have some room to gain rpms.
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My guess is you would probably turn a Bravo FS 21 pitch about 5800 rpm's. It should also carry a load better than the Powertech.
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You normally pitch up 2" when you change to a Bravo since they are shallow pitched.
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