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Old 07-03-2018, 06:57 PM   #1
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Country: U.K.
Location: Hayling island
Occupation: Roofer
Interests: Anything with horse power
Boat name: Sonic
Boat make: Extreme 24
Engines: Mercury racing 525
Cruising area: Solent

Join Date: Mar 2012
Location: Hayling island
Posts: 50
Drive ratio help please

I have a merc 525 with a bravo 1 xr drive 1.50 ratio spinning 30 4 blade
Prop , I want to change to a bravo 3 xr, do I keep the same ratio or will it have to change because it’s a dual prop
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Old 07-06-2018, 06:25 PM   #2
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Country: uk
Location: dorset
Interests: wasting money on boats
Boat name: aquilla .
Boat make: Superhawk 40. Ring 21E. Seadoo gtx. Windy Khamsin
Engines: Kad 300s. 300xs Dbr .d6 370 230 4tec
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Quote:
Originally Posted by paul180289 View Post
I have a merc 525 with a bravo 1 xr drive 1.50 ratio spinning 30 4 blade
Prop , I want to change to a bravo 3 xr, do I keep the same ratio or will it have to change because it’s a dual prop

paul i am doing the same with 496 ho

same ratio but might need to drop down a pitch or two
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