Took a ride tonight in my flats boat. Had just done some work to it recently including removing some paint that was on the zinc that is mounted on the cavitation plate. I had removed the zinc that the previous owner had painted with some spray paint and hit it with a wire brush. This is the zinc that has the “fin” on it that sits right in front of the prop. Zinc is sitting in the 12 o’clock position current. Motor seems to want to blow out easily now when turning to starboard. Only thing I can figure is the “fin” needs to be offset from 12 o’clock but not sure which direction to turn it, or the rubber in the prop is starting to go and the prop is free spinning in a starboard turn for some reason. Any ideas?
Tilt the motor up and looking at it from the aft the zinc should point to 1 O’clock, or it should point to starboard!
http://www.ehow.com/how_8316185_stop-torque-steer-boat.html
That tab affects steering pressures, but should have nothing to do with “cavitation blow out”. Motor height is the more likely cause of that …
Reelly Old, contender never said he moved the motor up or down so about the only thing that could cause his problem is he repositioned the zinc tab! He says that it is blowing out now! A lot easier to turn the tab than to move the motor, don’t ya think:question: Start with the easy stuff first!
Yes, motor height has not been adjusted and if it was the issue it should blow out with a port or starboard turn. I will adjust the zinc and see if that corrects it. Again the only other thing I could think of was the prop was beginning to spin on the shaft and for some reason or another the starboard turn put more torque on the prop than running straight or steering to port. Let me start with the “Easy” fix first and see where I get. Thanks!
contender1, I like to hear about people working hard! If you think the prop is spun or slipping use a permanent marker and mark the hub and bushing and prop. Just drawl a line from the outside across everything to the inside and run the piss out of the boat while your checking the new tab position. If the lines have moved and don’t line up you have a prop problem!
May be a dumb question, but are you sure the prop is not spinning on the hub.
I have experienced this when the hub needs replacing the prop will slip under a load and catch at lower speeds and loads.
Soggybottom, that’s the reason for putting the marker line on the prop and hub:wink:
trim the motor down a little before turning
my bad. Replied without analyzing detail.