boat difficult to drive at speeds over 35 mph
 

I have twin 502 mags with bravo one drives and 26 pitch 4 blade props. Once I get the boat on plane it wants to dart one way or the other with little to no steering wheel input. As you can imagine, this is not fun. I haven't been able to get the boat over 45 due to the unstable ride. Any thoughts? Thanks. My boat is a 28 foot obsession with two steps in the hull.

Have only owned the boat for a couple months.

Do you have external steering or the tiller steering.If you have full hyd external steering I would check the alignment off the drives one to the other. If it is inside tiller steering it could be slop in the tillers,Do you have a tie bar? JOHN SR

da trim da trim boss,,your not trimming the boat enough,,need to get the bow out of the water..you are bow steering the boat..if you havnt driven a boat with steps and twins have someone teach you..also watch how you make turns or you may spin out,,also ware your tether...

Full external hydraulic steering with tie bar.

Your not hearing/reading the good advice given...:whistle:

I agree with the advice given above. My problem is that I drove a fountain with the same setup as mine and the boat drove like a dream. No issues whatsoever. The owner of that boat then drove mine and he couldn't keep the boat from darting left or right or even porpoising.

If you can grab the tie bar and move the outdrives at all there is air in the hydraulic steering system. Also check drive alignment.

All this sounds like a alinement issue or trim issue. If the drives have no slop in them, then it would seem the boat is being trimmed bow down to much.

John jr

Are your trim tabs stuck or placed down?

fixx
 

make sure theirs no water stuck in the stringers in the front of the boat..

Not the same boat but I put 4 blade Rev 4's on my 30' scarab sport and they had way too much stern lift. I could not get my bow out of the water to save my life. They would only let me trim up a bit and then they would start to slip. It was impossible to get the bow up at all. Ended up going back to the Mirage plus because of this. After you have done everything above maybe borrow a set of blades designed to give you good bow lift and see how they work for you.

Trim tabs are all the way up. Will check on water in the bow tomorrow.

Did you not water test this boat before you bought it????

props turning in, or out? in also increases stern lift...