Drive alignment, toe in or toe out? How much?
#21
On a twin engine vee spinning in, the props attempt to walk down the vee created in the water by the hull. This is why "in" give bow lift. This also causes the props to try to walk towards each other. In this case set the toe "in" at 1/8". That is the shaft tips closer than the nose tips.
For spinning out on a vee, reverse everything above. That's how it is boys on vees.
BT
For spinning out on a vee, reverse everything above. That's how it is boys on vees.
BT
#23
Thread Starter
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Joined: Jun 2007
Posts: 109
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From: Denton, TX
On a twin engine vee spinning in, the props attempt to walk down the vee created in the water by the hull. This is why "in" give bow lift. This also causes the props to try to walk towards each other. In this case set the toe "in" at 1/8". That is the shaft tips closer than the nose tips.
For spinning out on a vee, reverse everything above. That's how it is boys on vees.
BT
For spinning out on a vee, reverse everything above. That's how it is boys on vees.
BT

What I do not understand is what causes the ill low speed handling many folks are concerned about when spinning in?
Greg
#26
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Joined: Nov 2002
Posts: 4,176
Likes: 333
From: ankeny,ia.
prop thrust is being thrown upward against the
transom in the area between the drives, thus
reducing useable thrust.
I've found that trimming the drives up slightly
past positive helps a bit.....it helps route the
thrust back under the boat.





