2005 41 CMY Volvo Gi

vickyb · Post by **vickyb** » April 13th, 2021, 12:55 pm

Hello All,

Wondering if anyone has any recommendations on ideal plane RPM. What could be an expected speed at that RPM

Thanks

buster53 · Post by **buster53** » April 14th, 2021, 10:28 am

I’m only guessing...that’s a lot of weight to be pushed by gassers...15 knots at 3300 rpm’s. WOT speed, 23-25 knots. I’m sure someone more qualified will chime in on this.

Want to cut your fuel bill in half...cruise at hull speed, around 7-7.5 knots. Your wallet will thank you.

vickyb · Post by **vickyb** » April 15th, 2021, 7:31 am

Thank you. I was told that cruising at engines optimum RPM offers the best speed:fuel ratio. Interesting to note the hull speed and agree that lower RPM easier on wallet

buster53 · Post by **buster53** » April 15th, 2021, 10:03 am

Some years ago, I had a 3807, almost as heavy as yours with twin Merc 454's. Almost always traveled at hull speed. Getting up on plane cut my miles per gallon in half, from about 1 mpg to 1/2 mpg. Carborated engines...you should do better with fuel injected.

Whatever you do, do not travel at speeds between hull speed and full plane. All you will be doing is wasting a lot of fuel and kicking up a big wake which won't make you any friends. MPG's are worse at 12-13 knots than at 16-18

Steve2020 · Post by **Steve2020** » April 16th, 2021, 4:49 pm

I have 2006 model 3500 RPM will cruise at roughly 20 knots

2005 41 CMY Volvo Gi

2005 41 CMY Volvo Gi

Re: 2005 41 CMY Volvo Gi

Re: 2005 41 CMY Volvo Gi

Re: 2005 41 CMY Volvo Gi

Re: 2005 41 CMY Volvo Gi