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#1
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Steering tab or skeg on an Alpha 1 outdrive
I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion
steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. My questions are (1) should this happen (meaning that prop cannot be used on an Alpha 1 with the skeg) and (2) how important or useful is this skeg for a non-power steering boat. My brother-in-law and sister have a similar sized boat (bigger engine ) with the same outdrive but with power steering and he does not have a skeg sticking down, just a sacrificial anode disk where the skeg would be. Can I or should I replace this skeg or just stick with 3 blade props with less depth? As another note, when I got the boat it pulled fairly strongly to the left. By adjusting this skeg I got most of the pull out. If I leave it on I think I can get the rest of the pull out by turning it a little more left. If I take it off I have no idea what the effect on the steering will be. I guess unless there is a concensus of opinion here I could always take it off, run it and see what impact it has, but hopefully there is a good answer to this problem and the good folks here will provide it. Thanks. The Other Dave Hall |
#2
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"Dave Hall" wrote in message ... I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. My questions are (1) should this happen (meaning that prop cannot be used on an Alpha 1 with the skeg) and (2) how important or useful is this skeg for a non-power steering boat. My brother-in-law and sister have a similar sized boat (bigger engine ) with the same outdrive but with power steering and he does not have a skeg sticking down, just a sacrificial anode disk where the skeg would be. Can I or should I replace this skeg or just stick with 3 blade props with less depth? As another note, when I got the boat it pulled fairly strongly to the left. By adjusting this skeg I got most of the pull out. If I leave it on I think I can get the rest of the pull out by turning it a little more left. If I take it off I have no idea what the effect on the steering will be. I guess unless there is a concensus of opinion here I could always take it off, run it and see what impact it has, but hopefully there is a good answer to this problem and the good folks here will provide it. Thanks. The Other Dave Hall Why not just cut or grind a bit off the bottom of the anode tab? That may be worth a try. |
#3
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On Thu, 21 Jul 2005 12:49:07 -0400, "*JimH*" wrote:
"Dave Hall" wrote in message .. . I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. My questions are (1) should this happen (meaning that prop cannot be used on an Alpha 1 with the skeg) and (2) how important or useful is this skeg for a non-power steering boat. My brother-in-law and sister have a similar sized boat (bigger engine ) with the same outdrive but with power steering and he does not have a skeg sticking down, just a sacrificial anode disk where the skeg would be. Can I or should I replace this skeg or just stick with 3 blade props with less depth? As another note, when I got the boat it pulled fairly strongly to the left. By adjusting this skeg I got most of the pull out. If I leave it on I think I can get the rest of the pull out by turning it a little more left. If I take it off I have no idea what the effect on the steering will be. I guess unless there is a concensus of opinion here I could always take it off, run it and see what impact it has, but hopefully there is a good answer to this problem and the good folks here will provide it. Thanks. The Other Dave Hall Why not just cut or grind a bit off the bottom of the anode tab? That may be worth a try. It doesn't just hit a "little" bit, it hits pretty solidly. Basically the part that sticks down (like a little rudder) would have to go or a least have 2/3rds or so of it cut out to allow clearance for this prop. The Other Dave Hall |
#4
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"Dave Hall" wrote in message ... On Thu, 21 Jul 2005 12:49:07 -0400, "*JimH*" wrote: "Dave Hall" wrote in message .. . I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. My questions are (1) should this happen (meaning that prop cannot be used on an Alpha 1 with the skeg) and (2) how important or useful is this skeg for a non-power steering boat. My brother-in-law and sister have a similar sized boat (bigger engine ) with the same outdrive but with power steering and he does not have a skeg sticking down, just a sacrificial anode disk where the skeg would be. Can I or should I replace this skeg or just stick with 3 blade props with less depth? As another note, when I got the boat it pulled fairly strongly to the left. By adjusting this skeg I got most of the pull out. If I leave it on I think I can get the rest of the pull out by turning it a little more left. If I take it off I have no idea what the effect on the steering will be. I guess unless there is a concensus of opinion here I could always take it off, run it and see what impact it has, but hopefully there is a good answer to this problem and the good folks here will provide it. Thanks. The Other Dave Hall Why not just cut or grind a bit off the bottom of the anode tab? That may be worth a try. It doesn't just hit a "little" bit, it hits pretty solidly. Basically the part that sticks down (like a little rudder) would have to go or a least have 2/3rds or so of it cut out to allow clearance for this prop. The Other Dave Hall It is a matter of compromise........the bigger prop might give you better performance, the mini skeg might give you better handling. |
#5
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Mercury does offer a smaller tab for your issue. Maybe your local marine
store may also have them. "Dave Hall" wrote in message ... I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. My questions are (1) should this happen (meaning that prop cannot be used on an Alpha 1 with the skeg) and (2) how important or useful is this skeg for a non-power steering boat. My brother-in-law and sister have a similar sized boat (bigger engine ) with the same outdrive but with power steering and he does not have a skeg sticking down, just a sacrificial anode disk where the skeg would be. Can I or should I replace this skeg or just stick with 3 blade props with less depth? As another note, when I got the boat it pulled fairly strongly to the left. By adjusting this skeg I got most of the pull out. If I leave it on I think I can get the rest of the pull out by turning it a little more left. If I take it off I have no idea what the effect on the steering will be. I guess unless there is a concensus of opinion here I could always take it off, run it and see what impact it has, but hopefully there is a good answer to this problem and the good folks here will provide it. Thanks. The Other Dave Hall |
#6
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Or just file the tab off as req'd, and keep an eye on the rest of the anode
.... which should be done anyway. FWIW, the replacement for my alpha does not have the that tab ... what's important is that there be an anode, not it's shape. I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. |
#7
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On Thu, 21 Jul 2005 20:33:52 -0400, "Woodchuck"
wrote: Mercury does offer a smaller tab for your issue. Maybe your local marine store may also have them. Bingo! Stopped at West Marine at lunch and there it was. Hopefully the skeg is big enough to help with the steering while still giving clearance to the prop. Thanks. The Other Dave Hall "Dave Hall" wrote in message .. . I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. My questions are (1) should this happen (meaning that prop cannot be used on an Alpha 1 with the skeg) and (2) how important or useful is this skeg for a non-power steering boat. My brother-in-law and sister have a similar sized boat (bigger engine ) with the same outdrive but with power steering and he does not have a skeg sticking down, just a sacrificial anode disk where the skeg would be. Can I or should I replace this skeg or just stick with 3 blade props with less depth? As another note, when I got the boat it pulled fairly strongly to the left. By adjusting this skeg I got most of the pull out. If I leave it on I think I can get the rest of the pull out by turning it a little more left. If I take it off I have no idea what the effect on the steering will be. I guess unless there is a concensus of opinion here I could always take it off, run it and see what impact it has, but hopefully there is a good answer to this problem and the good folks here will provide it. Thanks. The Other Dave Hall |
#8
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Dave Hall wrote:
I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. My questions are (1) should this happen (meaning that prop cannot be used on an Alpha 1 with the skeg) and (2) how important or useful is this skeg for a non-power steering boat. My brother-in-law and sister have a similar sized boat (bigger engine ) with the same outdrive but with power steering and he does not have a skeg sticking down, just a sacrificial anode disk where the skeg would be. Can I or should I replace this skeg or just stick with 3 blade props with less depth? As another note, when I got the boat it pulled fairly strongly to the left. By adjusting this skeg I got most of the pull out. If I leave it on I think I can get the rest of the pull out by turning it a little more left. If I take it off I have no idea what the effect on the steering will be. I guess unless there is a concensus of opinion here I could always take it off, run it and see what impact it has, but hopefully there is a good answer to this problem and the good folks here will provide it. Thanks. The Other Dave Hall We had a 70 Trihull without power steering, the tab helped keep the steering torque down. It could be adjusted so that at specific speed the wheel would stay in place. But slower or faster speeds would result in the wheel trying to turn due to the prop torque My current boat has a Alpha drive with power steering and does not have the little fin. Nor does it appear to need it. If you are not feeling the need to try to adjust some steering torgue out of your system without it. I would not bother replacing it. Capt Jack R. |
#9
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Just may need to increase the angle some.
"Dave Hall" wrote in message ... On Thu, 21 Jul 2005 20:33:52 -0400, "Woodchuck" wrote: Mercury does offer a smaller tab for your issue. Maybe your local marine store may also have them. Bingo! Stopped at West Marine at lunch and there it was. Hopefully the skeg is big enough to help with the steering while still giving clearance to the prop. Thanks. The Other Dave Hall "Dave Hall" wrote in message . .. I have a 1995 19 ft cuddy with an Alpha 1 outdrive and rack & pinion steering (not power steering). In searching for a new prop the Mercury prop selector recommended an Alpha 4 20 pitch (48-834854A45) so I bought one. When I went to put it on it clearly had more depth than the current Black Max 19 pitch and hit the little sacrificial anode steering tab or skeg (?) that sticks down on the outdrive behind the prop. My questions are (1) should this happen (meaning that prop cannot be used on an Alpha 1 with the skeg) and (2) how important or useful is this skeg for a non-power steering boat. My brother-in-law and sister have a similar sized boat (bigger engine ) with the same outdrive but with power steering and he does not have a skeg sticking down, just a sacrificial anode disk where the skeg would be. Can I or should I replace this skeg or just stick with 3 blade props with less depth? As another note, when I got the boat it pulled fairly strongly to the left. By adjusting this skeg I got most of the pull out. If I leave it on I think I can get the rest of the pull out by turning it a little more left. If I take it off I have no idea what the effect on the steering will be. I guess unless there is a concensus of opinion here I could always take it off, run it and see what impact it has, but hopefully there is a good answer to this problem and the good folks here will provide it. Thanks. The Other Dave Hall |
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