hey guys, first I have to say that I really appreciate the discussions and opinions on this forum. I've been a long time reader, not so much of a contributor, but I learned a bunch on ribbing from you.
A couple of weeks ago I decide to bite the bullet and lift up my engine to the fourth hole (highest setting). I did it in order to improve the general handling, to increase wot speed and most importantly to reduce porpoising at high speed (mostly when I'm alone in the boat)!
After a run on the river I can say that the behavior at WOT has improved a lot even if, in my own opinion, there is still a lot of water splashing over the anti-ventilation plate.
The problem is now that at cruise speed the boat purpoise a lot more than before. I tried different weight distribution (more weight at the front or at the back) but to no success.
Tech Spec:
4.5m see picture below...
40 hp Evinrude Etec (tiller)
15" pitch propeller (solas amita 3?)
cruise: 3500 RPM, 31 km/h
wot: 5460 RPM, 49 km/h
Sorry for the poor quality of the video, I was alone. Also I shouldn't have enabled the auto-stabilisation of the image in youtube as the engine looks like it's moving all around like it wasn't correctly fixed to the transom but that's just visual artefact of the stabilization...
I've put the entire video here: WOT / correctly trimmed is @ approx 1:15
https://youtu.be/MupKH9528iU
Here's a picture of the engine height in relation to the boat:
As I can't increase the height of the engine anymore, I was thinking about buying a fix set back/ jack plate like this one:
Hi-Jacker™ Fixed Jack Plate 4 inch | T-H Marine Supplies
It would allow me to increase the engine even more and maybe get the engine running in "cleaner" water because of the 4" set back.