jeffb5.8 Posted April 30, 2018 Share Posted April 30, 2018 (edited) When my boat is on the trailer the Outboard looks to be at the correct height with the plate level with the bottom of my boat. But! When I am at full revs and planning along at 68km/h I decided to see what it looked like and I cannot see either the lower plate or the upper plate. This is with the motor trimmed up so the front is up and the motor is in the sweet spot. will try and upload the video Edited April 30, 2018 by jeffb5.8 Link to comment Share on other sites More sharing options...
jeffb5.8 Posted April 30, 2018 Author Share Posted April 30, 2018 3DC1C62F-1B07-423C-AE94-EAEBF7820C70.mp4 Link to comment Share on other sites More sharing options...
rickmarlin62 Posted April 30, 2018 Share Posted April 30, 2018 is your lower cav plate parallel to hull seems to be under water...at that speed u should be able to see upper n lower cav plates...rick Link to comment Share on other sites More sharing options...
jeffb5.8 Posted April 30, 2018 Author Share Posted April 30, 2018 (edited) Yep Lower Cav plate is level with the bottom of the hull. Edited April 30, 2018 by jeffb5.8 Link to comment Share on other sites More sharing options...
jeffb5.8 Posted April 30, 2018 Author Share Posted April 30, 2018 This is the motor at it’s lowest level and when planning I am at between 28 and 40 on the trim gauge. Link to comment Share on other sites More sharing options...
GoingFishing Posted April 30, 2018 Share Posted April 30, 2018 Excuse my ignorance but are you supposed to be able to see lower and upper cav plates when boat is on plane? I assumed as long as lower cav plate is level with bottom of the boat its fitted to manufacturers recommendation. What are the implications if u cant see? Havent tested my boat but now im curious Link to comment Share on other sites More sharing options...
jeffb5.8 Posted April 30, 2018 Author Share Posted April 30, 2018 (edited) My understanding from reading is that when planning the bottom plate should just be under the water and the top one should be just above the water. so in my case I think the engine should be one hole up, which will put the Cav plate in the right position when planning and trimed correctly. i also may need to change props as I hit 5,950rpm when WOT in good to glass conditions with 2 Adults and 2 kids. So if raising it up increases the top RPM I will be over reving it Edited April 30, 2018 by jeffb5.8 Link to comment Share on other sites More sharing options...
rickmarlin62 Posted April 30, 2018 Share Posted April 30, 2018 Raising it shouldnt alter your revs pitch alters revs Link to comment Share on other sites More sharing options...
dunc333 Posted May 2, 2018 Share Posted May 2, 2018 try raising it 1 hole mate Link to comment Share on other sites More sharing options...
onearmedfisho Posted May 3, 2018 Share Posted May 3, 2018 yeah a little low Link to comment Share on other sites More sharing options...
BWV Posted May 18, 2018 Share Posted May 18, 2018 It’s low, your antiventilation plate (bottom plate)should be clear of the water when planning, and only getting splashed. Engines revs will increase as engine is raised as load is reduced. Do a search on this topic, it’s been covered before. Link to comment Share on other sites More sharing options...
JonD Posted May 18, 2018 Share Posted May 18, 2018 (edited) For high performance it looks to low, I personally have my outboard on its highest transom setting which has the bottom plate about 40-50mm above the bottom of my hull. In having it that height it is far lighter on steering, more senative to correct trim and most importantly better on fuel and faster. It all depends on what you hope to achieve from the boat, check this site http://www.boats.com/how-to/the-outboard-expert-boost-speed-with-outboard-engine-height-adjustments/#.Wv9YatF_WhA Edited May 18, 2018 by JonD Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now