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Old 13-08-2018, 19:22   #1
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I/O Drive Handling Question

I used to be able to walk a twin screw inboard sideways but I am unable to figure out a way to do this on my 36' I/O drive boat. Sometimes at the fuel dock the smaller boats can crowd the area and make it tough. Any suggestions?

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Old 14-08-2018, 03:32   #2
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Re: I/O Drive Handling Question

The principal is no different to a twin inboard, the main difference is the props are closer so less leverage, and the point it swivels from is further aft....

Practice practice practice....


The deal killer, is if your sterndrives have dual contra rotating props, this kills the prop walk and makes it harder... still doable though... did I mention practice... thrusters help immensely
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Old 14-08-2018, 04:41   #3
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Re: I/O Drive Handling Question

First, not all twin-screw boats will walk sideways. Some will, some wont.

But anyway, with your I/Os, it's likely an issue with props being too close together and too small. Usually the first fallback is to use the wheel, back and fill, etc. Another is to approach at a sharp angle, then power against your rubrail to pivot the boat.

Spring lines are sometimes even easier.

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Old 14-08-2018, 06:14   #4
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Re: I/O Drive Handling Question

When you are attempting this with the I/O's, are you leaving the drives in dead ahead?


I/O's have a 'directed thrust" even with no headway, using the wheel whilst 'track steering' could cause problems, but the greater leverage requirements caused by having the props so much further back (as compared to an inboard) could also be an issue, as could the distance between them...
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Old 14-08-2018, 11:24   #5
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Re: I/O Drive Handling Question

To reiterate what's been said,
- no rudder; directed trust,
- smaller props; very little prop walk, if any,
- pivot point farther aft; takes more thrust to spin,
- props closer together; takes more thrust to spin.

You can certainly pivot by splitting the clutches on an outdrive or outboard. You might have to use a LOT of throttle though. Getting true sideways motion (no wind or current helping) would be quite a feat. I won't say it can't be done, or there will be 100 testimonials claiming to have done it. But testimonials are the poorest form of evidence.

Basically, sideways movement using just twin screws on an inboard leverages the fact that the rudder behind the forward-moving prop has more influence, and some prop walk. Without these (and without resorting to letting the wind or current do its thing) you really can't "walk" any boat.
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Old 14-08-2018, 13:48   #6
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Re: I/O Drive Handling Question

Thanks Everybody,

Yep, I have Duo Drive so that is an issue as someone told me. Yep, I have the drives in straight forward position. I appreciate your comments. I will just have to deal with the hand that was dealt me when I bought it. Love the boat though.

Thanks Again,

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