Hydrofoils

Posted 7/22/2003 1:12 PM (#76550)
Subject: Hydrofoils


I recently bought a 01 Crestliner Angler 16 with a 40 horse four stroke Mariner. I'm having a lot of trouble planing out at low speed or rough water. A friend suggested trying a hydrofoil on the cavitation plate. Anyone have any experience with one? What brands should I consider? I'm not really excited about drilling holes into the plate - will it screw things up if I take it off later?

Elby
sworrall
Posted 7/22/2003 2:24 PM (#76552 - in reply to #76550)
Subject: RE: Hydrofoils





Posts: 32884


Location: Rhinelander, Wisconsin
Before you go that direction, I would have a shop test the prop for W.O.T- RPM to be sure you are propped right. I see underperforming boats alot; usually everything BUT the prop gets blamed, yet that is what sets the hole shot, top end, and cruising RPMs.
Tahoe
Posted 7/22/2003 4:50 PM (#76570 - in reply to #76550)
Subject: RE: Hydrofoils





Posts: 328


Location: MN
Should not have that problem. I run a 1600 Angler and my Evinrude 40 hr 4 stroke planes out in seconds.

Check the prop! I had an 11 1/2 X 13 (OMC recommended) , but RPM's hit 6000 WOT. We went to 11 1/4 X 14 and it runds great!

Edited by Tahoe 7/22/2003 4:51 PM

Posted 7/23/2003 9:22 AM (#76634 - in reply to #76550)
Subject: RE: Hydrofoils


Thanks guys for the help. I will check into the prop. I need to get a spare anyway. Tahoe what can I expect to pay for another prop? It looks like we run similar set ups. Is your 1600 a tiller?

Elby
Pepper
Posted 7/24/2003 3:15 PM (#76720 - in reply to #76550)
Subject: RE: Hydrofoils




Posts: 1516


What is WOT?

Posted 7/24/2003 3:42 PM (#76721 - in reply to #76550)
Subject: RE: Hydrofoils


I believe it's "wide open throttle". Is it possible to test revs at WOT without a tach on my boat?


Elby
sworrall
Posted 7/24/2003 10:04 PM (#76761 - in reply to #76721)
Subject: RE: Hydrofoils





Posts: 32884


Location: Rhinelander, Wisconsin
The shop  you have work on your boat will have a 'shop tach' they use to hook up to rigs without an instrument cluster. That is the only way. Wide Open Trottle is right, sorry!
Pepper
Posted 7/25/2003 9:36 AM (#76833 - in reply to #76550)
Subject: RE: Hydrofoils




Posts: 1516


So you want lower RPM's at WOT, correct? What would be best?
jtroop
Posted 7/26/2003 1:02 PM (#76930 - in reply to #76550)
Subject: RE: Hydrofoils




Posts: 177


Location: Cohasset, MN
Usually to get best performance (hole shot and top speed) out of your setup (at WOT) you'll want to be in the upper half of whatever the WOT range is for your motor.