Walking sideways.....

[oscarvan]

Though well in lust with them, I haven't actually driven a 53.....

Some boats will walk sideways, say to port.... Rudder to SB, 80-100%, SB screw FWD to kick the stern out, Port screw in reverse 150 rpm above the SB engine to counteract the pivot and the result is a nice lateral slide.....

But, a LOT of it depends on hull design. Will the 53 modified displacement hull with quite a bit of keel do this?

 

[capttonyf]

Though well in lust with them, I haven't actually driven a 53.....

Some boats will walk sideways, say to port.... Rudder to SB, 80-100%, SB screw FWD to kick the stern out, Port screw in reverse 150 rpm above the SB engine to counteract the pivot and the result is a nice lateral slide.....

But, a LOT of it depends on hull design. Will the 53 modified displacement hull with quite a bit of keel do this?

I'm confused, something in either the direction your trying to go or what your doing with the rudders doesn't seem to match up. I've never walked a boat this way, Always just kind of wiggled it in or out of the dock. When thinking what you said through in my head it almost seems like you would go Starboard before you would go to Port. Thanks a lot, now you have me thinking and I'm not sure if I have time for that.

Tony

 

[capttonyf]

Though well in lust with them, I haven't actually driven a 53.....

Some boats will walk sideways, say to port.... Rudder to SB, 80-100%, SB screw FWD to kick the stern out, Port screw in reverse 150 rpm above the SB engine to counteract the pivot and the result is a nice lateral slide.....

But, a LOT of it depends on hull design. Will the 53 modified displacement hull with quite a bit of keel do this?

I'm thinking I get it now, the port engine at a higher RPM in reverse is what pulls the bow off by over powering the starboard rudder effect. Seems like you'd have to know your boat well and just how much Port Reverse RPM it would take to keep it moving sideways only and keeping it from creeping aft into a boat behind you. I think I'll stick with the wiggle even though I'm going to have to try this now for S$!ts and Giggles.

Tony

 

[oscarvan]

I'm thinking I get it now, the port engine at a higher RPM in reverse is what pulls the bow off by over powering the starboard rudder effect. Seems like you'd have to know your boat well and just how much Port Reverse RPM it would take to keep it moving sideways only and keeping it from creeping aft into a boat behind you. I think I'll stick with the wiggle even though I'm going to have to try this now for S$!ts and Giggles.

Tony

Yes, you got it. Thing is, some boats it works really well, some it doesn't. A lot has to do with the hull design. My question was whether a 53 will do it......

 

[magnawake]

I have heard of sailboats side walking to port while in reverse only. I have never heard of a MY doing this. In relation to airplanes, this effect is called "P-factor". Thats when you Pitch up on take off and at full power the plane wants to turn left. Whats happening is, at this high angle of attack the prop bites off more air on the right side of the blade thus pulling the plane to the left, or port. Why the plane example? Well, the same could happen to the sail boat because of the steep shaft angle of the running gear. This only happens in reverse though. The 53, and other MY's do not have this steep shaft angle and do not get this noticable side walking. My 43 goes straight back and I'm sure the 53 does too.

 

[oscarvan]

I have heard of sailboats side walking to port while in reverse only. I have never heard of a MY doing this. In relation to airplanes, this effect is called "P-factor". Thats when you Pitch up on take off and at full power the plane wants to turn left. Whats happening is, at this high angle of attack the prop bites off more air on the right side of the blade thus pulling the plane to the left, or port. Why the plane example? Well, the same could happen to the sail boat because of the steep shaft angle of the running gear. This only happens in reverse though. The 53, and other MY's do not have this steep shaft angle and do not get this noticable side walking. My 43 goes straight back and I'm sure the 53 does too.

Ah, you missed it, not some of it, all of it.

Sailboats, most being single screw, will favor to port, or starboard, depending on the rotation of the screw.... it's called "prop walk" as for your aviation data...

First off, with airplanes there are FOUR left turning tendencies: It's P-factor, Torque, spiraling slip stream and gyroscopic precession..... which I am somewhat familiar with having been a flight instructor for a few years or so......

But that wasn't the point of my question. I KNOW twin screw boats can be made to walk sideways, provided there's a rudder in front of, or behind depending on your point of view, each prop. It's just that, depending on hull design, some do it better than others.

My question was, how well does the 53 walk sideways?

 

[magnawake]

Yep, that pretty much sums it up. I didnt meantion slip stream, dang. prolly dont happen to a boat does it. Ha ha. Im glad it doesnt. My leg would get tired of standing on the right rudder dropping skydivers out of that C-182. I have seen videos of sport fishing boat a little. Yeah I would like to try it too. I just use my spring line to swing out away from a tight dock.

 

[oscarvan]

You really want to wear out your right leg try a Turbo Arrow IV.....

Now, back to my original question?

 

[SEVEN]

I walk mine but I also use my bow thruster to help. Although, if I didn't have the thruster I could still walk her. Just a heads up that due to the slow reaction when placing motors into gear you have to really think ahead. Hope this helps.

 

[magnawake]

I walk mine but I also use my bow thruster to help. Although, if I didn't have the thruster I could still walk her. Just a heads up that due to the slow reaction when placing motors into gear you have to really think ahead. Hope this helps.

In other words fly in front of the plane, not on the tail. So how do you do it?

 

[SKYCHENEY]

The short answer is no. It will walk sideways but it doesn't do it well. The keel is too deep, I think.

 

[Mike36c]

You really want to wear out your right leg try a Turbo Arrow IV.....

Now, back to my original question?[/QUOTE

I towed flying billboards in my younger days to build time, talk about a tired right leg and I lost count of the number of times of being fully stalled below 200'. As for your question I've tried this numerous times in my 36 with zero success. Seems hatts don't have enough rudder or I'm I poor captain, not sure which

 

[SEVEN]

It's easiest if you look on utube under walking a boat.

 

[jim rosenthal]

And the rudders too small, maybe. But I'm still going to try it. I've been trying to get my Hatteras to do this for years, maybe this is the secret.

 

[holtcl]

I've been told the rudders on at 53 are too small to do this.

I've also never been able to get the boat to move sideways.


Cheryl
Cinderella
1971 53 MY

 

[34Hatt]

You really want to wear out your right leg try a Turbo Arrow IV.....

Now, back to my original question?[/QUOTE

I towed flying billboards in my younger days to build time, talk about a tired right leg and I lost count of the number of times of being fully stalled below 200'. As for your question I've tried this numerous times in my 36 with zero success. Seems hatts don't have enough rudder or I'm I poor captain, not sure which

Its the boat the 36 is very close to the 34 and I mine will not do it and I have done it in other boats.
As said above some do some don't!
When I ran Ferry's all in the 60'-65' range some could come off a bulkhead like it had thrusters some Nada!

 

[Freeebird]

Though well in lust with them, I haven't actually driven a 53.....

Some boats will walk sideways, say to port.... Rudder to SB, 80-100%, SB screw FWD to kick the stern out, Port screw in reverse 150 rpm above the SB engine to counteract the pivot and the result is a nice lateral slide.....

But, a LOT of it depends on hull design. Will the 53 modified displacement hull with quite a bit of keel do this?

That technique works fine with twin stern drives, but it won't work that well with inboards unless they have really BIG rudders. Just take advantage of the pointy end when you're coming off a dock.

 

[oscarvan]

OK, seems the consensus is that some they do, and these they don't. I was afraid the keel would be an impediment.

 

[jim rosenthal]

I don't think the keel is as much of a problem as the little rudders. The rudders are fine at planing speeds, but I don't think they have enough area to walk the boat sideways like we're talking about.

 

[oscarvan]

You're probably right. Now, increasing RPM's could help get some water flowing over the rudders......

When I get my mitts on a nice specimen I will be playing with it and trying this trick out. (Away from solid objects for starters of course) I will then report back here.