Originally Posted by warder54
I had this problem with my 3.8 too. Parsun 9.8 4 stroke short shaft, cavitation when coming onto the plane. Now sorted having remembered to change trim setting to 2nd hole from 3rd!! (My 14' portabote needed this setting) and topping up deck pressure after sitting in water for 10 min or so. she now gets on the plane quickly with +/- 300kg (2 + fuel + gear) and balanced out. could not believe how quick she was with the Parsun either, I was thinking of getting a heavier 15 next year but will now stick with this as it's quick enough and very economical/reliable. Plus I have a Smartwave XL 490 centre console on order for longer trips out and fun with more on board.
Here is my rig in the water at Ferryden Montrose waiting on my mate with the last of the gear.
That's *remarkable* performance from a heavy low powered engine on a very heavily loaded large SIB. Would have thought if you add a console and even *more* load you'll be like a slug in treacle.
Does not seem representative of most of us on here......
In comparison my airfloor Zodiac (30kg boat) with a 9.8 Tohatsu (26 kg engine) was fine with me + child and light load (total load about 125kg) but add wife and other child (so total about 200kg) and major weight shift was needed to get on the plane.
My Bombard with Mariner 15 (lightest 2 stroke 15 available) pops up very quickly on the plane with the 125 kg load, not tried it with more weight yet.
Just amazed at what is reported on here from some SIB owners.