Prop Question
horsehunter
Posted 8/14/2017 8:55 PM (#874332)
Subject: Prop Question




Location: Eastern Ontario
Son in law has a 16.5 Lowe SC with a 75 etech with just him in the boat he hits 40 mph with a wot and 5900 rpm
He has an unknown brand stainless prop marked 13.5 x 18 also marked 763 953 boat was bought used.
His problem is getting heavier teens up water skiing he says the bow doesn't come down quick enough and it seems to cavitate . He asked about a dole fin type of thing and I wondered about a different aluminum prop for skiing . Your thoughts please.
sworrall
Posted 8/16/2017 11:58 AM (#874535 - in reply to #874332)
Subject: Re: Prop Question





Posts: 32800


Location: Rhinelander, Wisconsin
I'd drop a couple pitches for skiing in an aluminum, and not run the boat wot with that prop on.
horsehunter
Posted 8/16/2017 12:16 PM (#874536 - in reply to #874332)
Subject: Re: Prop Question




Location: Eastern Ontario
Thanks Steve that's sort of what I was thinking would you go 4 blade or stay with 3 and would a 17 be dropping enough?

sworrall
Posted 8/16/2017 12:51 PM (#874538 - in reply to #874332)
Subject: Re: Prop Question





Posts: 32800


Location: Rhinelander, Wisconsin
I'd go with a 4 blade for that purpose.
VMS
Posted 8/20/2017 8:31 AM (#874939 - in reply to #874332)
Subject: Re: Prop Question





Posts: 3472


Location: Elk River, Minnesota
If it's a 13.5 x 18, and it has vent holes that are about 3/8", I'll bet it is a raker propeller... good prop for lift and top end, not so much for skiing. A good 4 blade in a 15 pitch would do very well as Steve mentioned...

Steve

Edited by VMS 8/20/2017 4:24 PM