WelikeithereonShuswap
Member
- Oct 14, 2018
- 57
- Boat Info
- 260 Sundancer 2002, 5Kw Westerbeke Genny,
5.0mpi/new B3 in 2023, Simrad gps plotter/sounder.
- Engines
- Merc 5.0 MPI, w Bravo III Drive
Here I am siting in the sun on my patio
Having a margarita but
Not on my boat out on the lake..
AGAIN...the outdrive saga has reared its ugly head Again..
Bought a rebuilt upper and lower B3 at 2.20 Ratio, I run 22p 3 blade merc props.
A few summers ago...original drive unit failed and I went with a local re/re on the drive with a one year warranty
That ended last June 2022.
Had put 30hrs on it since then, total hrs 60 since re/re..the upper pinion gear tooth broke and migrated into lower...toast.
I'm now ordering a merc oem complete unit..be 18k in canadian $
Original drive ratio was 2.20
Merc manual says the 5.0efi can work with 1.81 ratio or 2.00 ratio or 2.20
My question is if I changed to a 2.0 ratio using my 22p props will my boat pull a bit better from idle.. and get to plane sooner and be able to hit 4500rpm wot.
she's a dog and with my current setup, with drive tucked all waY in and tabs up, she takes .5km or more to lift her stern and get up on plane at 16knts 3000rpm ..then full plane at 19knts 3300rpm and I can start using trimtabs and trimout drive to cruise
At 3500 rpm 23knts.
Wot is wont exceed 3800rpm and 27knts
She will not hit 4000rpm wot.
She has a westerbeke 5.0kw genny
Which is 380lbs, full water, fuel, 4 adults and gear . Add 2 kids on a tube and she will not get up to plane ever...can 2.00 drive ratio help?
Having a margarita but
Not on my boat out on the lake..
AGAIN...the outdrive saga has reared its ugly head Again..
Bought a rebuilt upper and lower B3 at 2.20 Ratio, I run 22p 3 blade merc props.
A few summers ago...original drive unit failed and I went with a local re/re on the drive with a one year warranty
That ended last June 2022.
Had put 30hrs on it since then, total hrs 60 since re/re..the upper pinion gear tooth broke and migrated into lower...toast.
I'm now ordering a merc oem complete unit..be 18k in canadian $
Original drive ratio was 2.20
Merc manual says the 5.0efi can work with 1.81 ratio or 2.00 ratio or 2.20
My question is if I changed to a 2.0 ratio using my 22p props will my boat pull a bit better from idle.. and get to plane sooner and be able to hit 4500rpm wot.
she's a dog and with my current setup, with drive tucked all waY in and tabs up, she takes .5km or more to lift her stern and get up on plane at 16knts 3000rpm ..then full plane at 19knts 3300rpm and I can start using trimtabs and trimout drive to cruise
At 3500 rpm 23knts.
Wot is wont exceed 3800rpm and 27knts
She will not hit 4000rpm wot.
She has a westerbeke 5.0kw genny
Which is 380lbs, full water, fuel, 4 adults and gear . Add 2 kids on a tube and she will not get up to plane ever...can 2.00 drive ratio help?