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#1
posted to rec.boats
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Boats and motorcycles
On Jun 1, 4:48?pm, "RCE" wrote:
Ok. Now that we all understand and agree on the mechanics of steering a motorcycle, let's consider this situation. Twin screw inboard. No wind. Little or no current. Helm hard over to port. Starboard engine at idle Starboard transmission in "forward". Port engine at idle Port transmission in "reverse". Which way will the boat move? Eisboch Depends on how long the boat is. May not go anywhere considering engines are at idle |
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#2
posted to rec.boats
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Boats and motorcycles
"Tim" wrote in message oups.com... On Jun 1, 4:48?pm, "RCE" wrote: Ok. Now that we all understand and agree on the mechanics of steering a motorcycle, let's consider this situation. Twin screw inboard. No wind. Little or no current. Helm hard over to port. Starboard engine at idle Starboard transmission in "forward". Port engine at idle Port transmission in "reverse". Which way will the boat move? Eisboch Depends on how long the boat is. May not go anywhere considering engines are at idle Oh, it will move. I posed the question poorly. Better questions a Which way will the bow move? Which way will the stern move? Eisboch |
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#3
posted to rec.boats
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Boats and motorcycles
On Jun 1, 7:06?pm, "RCE" wrote:
"Tim" wrote in message oups.com... On Jun 1, 4:48?pm, "RCE" wrote: Ok. Now that we all understand and agree on the mechanics of steering a motorcycle, let's consider this situation. Twin screw inboard. No wind. Little or no current. Helm hard over to port. Starboard engine at idle Starboard transmission in "forward". Port engine at idle Port transmission in "reverse". Which way will the boat move? Eisboch Depends on how long the boat is. May not go anywhere considering engines are at idle Oh, it will move. I posed the question poorly. Better questions a Which way will the bow move? Which way will the stern move? Eisboch- Hide quoted text - - Show quoted text - OK, well then, I must have posted my answer poorly. If it's moored bow first in a slip it probably won't go anywhere |
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#4
posted to rec.boats
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Boats and motorcycles
"RCE" wrote in message ... "Tim" wrote in message oups.com... On Jun 1, 4:48?pm, "RCE" wrote: Ok. Now that we all understand and agree on the mechanics of steering a motorcycle, let's consider this situation. Twin screw inboard. No wind. Little or no current. Helm hard over to port. Starboard engine at idle Starboard transmission in "forward". Port engine at idle Port transmission in "reverse". Which way will the boat move? Eisboch Depends on how long the boat is. May not go anywhere considering engines are at idle Oh, it will move. I posed the question poorly. Better questions a Which way will the bow move? Which way will the stern move? Eisboch With the rudder in the neutral position the boat would pivot to port. With the rudder hard port one may think the boat may tend to move even more aggressively (bow) to port.........but the correct answer will probably be the bow moving to starboard. ;-) |
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#5
posted to rec.boats
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Boats and motorcycles
"JimH" wrote in message ... "RCE" wrote in message ... "Tim" wrote in message oups.com... On Jun 1, 4:48?pm, "RCE" wrote: Ok. Now that we all understand and agree on the mechanics of steering a motorcycle, let's consider this situation. Twin screw inboard. No wind. Little or no current. Helm hard over to port. Starboard engine at idle Starboard transmission in "forward". Port engine at idle Port transmission in "reverse". Which way will the boat move? Eisboch Depends on how long the boat is. May not go anywhere considering engines are at idle Oh, it will move. I posed the question poorly. Better questions a Which way will the bow move? Which way will the stern move? Eisboch With the rudder in the neutral position the boat would pivot to port. With the rudder hard port one may think the boat may tend to move even more aggressively (bow) to port.... After seeing Jim's answer you have to understand that I *meant* to say "tend to move even less aggressively to port".......and "walking" port to starboard....... Yeah, that's the ticket! |
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#6
posted to rec.boats
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Boats and motorcycles
On Jun 1, 7:52 pm, "JimH" wrote:
"JimH" wrote in message ... "RCE" wrote in message ... "Tim" wrote in message groups.com... On Jun 1, 4:48?pm, "RCE" wrote: Ok. Now that we all understand and agree on the mechanics of steering a motorcycle, let's consider this situation. Twin screw inboard. No wind. Little or no current. Helm hard over to port. Starboard engine at idle Starboard transmission in "forward". Port engine at idle Port transmission in "reverse". Which way will the boat move? Eisboch Depends on how long the boat is. May not go anywhere considering engines are at idle Oh, it will move. I posed the question poorly. Better questions a Which way will the bow move? Which way will the stern move? Eisboch With the rudder in the neutral position the boat would pivot to port. With the rudder hard port one may think the boat may tend to move even more aggressively (bow) to port.... After seeing Jim's answer you have to understand that I *meant* to say "tend to move even less aggressively to port".......and "walking" port to starboard....... Yeah, that's the ticket!- Hide quoted text - - Show quoted text - But, it will still hit the side of the slip...... |
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