hole shot with twin I/O

[Lars T]

Hi guys,
my parents have this IMO nice Sea Ray 280 Sunsport fitted with two 350 mags, Bravo I drives and Mirage 21" props..

Out of the hole one of the props sometimes slips?? why is this??
Drives are all trimmed down but it still slips..

Two large/small props or??


thx..

[MrRob]

if both props are identical then the prop that is 'sometimes' slipping may have a worn hub. Remove the prop that is slipping and give the rear of the hub a damn good clean and score a mark from the centre of the prop on to the hub itself. Make sure this score line is very clear. Take it for a caining and see if the score line has become seperated. If it has that would indicate that the hub is spinning inside the prop centre.
See the diagram I drew.

[Lars T]

Thx again Rob - will have a look at it..!

[Lars T]

No tips from the guys with the "Distant Rumble" and/or a big yellow phantom, Jon?

[Matt]

I agree with Mr Rob.
Also, are they 'nailing it' out of the hole - that could induce a prop to break free I guess.
And are both props in good condition with no nicks/damage?

[Lars T]

no nicks or dammage - but could do with a bit of cleaning... I removed all the algea but still there's some "marks/stains"..

[MrRob]

What boat do you have Matt?

[Matt]

http://www.mattyorke.co.uk/gallery/formula/ryde

In a million bits at the moment though.

[MrRob]

what are you doing to it?

[Matt]

Lots of jobs really. Strengthened the engine bay floor & engine beds - showed signs of flexing.
New manifolds on the motors.
Replace 1 transom assembly, refurbish the other.
Add Hydraulic steering.
Refurbish the tabs.
Removed swim platfom and paint transom.
And numerous other small jobs.

Just struggle to find time to do it.

[Captain Chaos]

you opted to fit the hydraulic in the end then?

[Matt]

Well, it's not on and I've not drilled any holes yet - but am currently thinking I will put it on - cos my next boat is as likely as not to have a pair of egg whisks on the back so there'd not be much point in saving IO hydraulic steering for it.
But I dunno, will see how it goes.

[MrRob]

Is that your wife driving the boat?

[Captain Chaos]

one eye inspection for Mr Rob i think.

unless you were assuming Matts boats a left hand swing

[MrRob]

lol nice one.
What boat you got Chaos?

[Matt]

He's got a trio 21. Bit like a Phantom 21, except heavier.

[Captain Chaos]

21 phantom 225x promax

[Captain Chaos]

sod off lanky..............get your facts right!

thats MUCH heavier

[MrRob]

I got a 225 pro max. I havent had it in the water yet though.

[Captain Chaos]

thats 2 of us then.

Steve ttold me that motor used to make his 20 phantom fly