Guys,
Trying to diagnose a problem that has come up on my new to me toy. Boat is as described in signature, about 500 hrs on original equipment. About a week ago I had a spun hub on a 14.25 x 23 SS prop, pain in the butt but no big deal as I had a spare aluminum of same size in the boat. Since this has happened everything seems fine with one exception. At WOT, after on plane, something will begin slipping, RPM's will rise to over 5,000, and the boat will slow. Once the slip starts I have to return all the way to idle and re-accelerate to get a good "grip" again. None of this was happening prior to the spun hub on the old prop. I checked my shift linkage on the starboard shift linkage today and the plunger switch was not dead center in the V of the linkage when in forward, it was centered in reverse and neutral. Adjusted the remote linkage today out of the water but haven't had a chance to recheck it. What I'm thinking is that the issue has something to do with one of the following:
1. linkage out of adjustment, drive slipping at high rpm - should know if that was the case next saturday when we hit the lake again.
2. trim set too high - I'm leaning against this because the slip starts with throttle adjustment, not with trim adjustment. I can leave trim in a good cruise setting, adjust throttle to max while on plane, and I'll slip.
3. whale tail on outdrive. I put one of those stingray stealth tails on the drive in an attempt to lower plane speed right before all this happened. Could it be causing my prop to ventilate at high speed on plane operation?
4. something else?? - this is the one that really scares me, I can deal with the above but its tough to risk stranding your family on the lake because I thought I had the problem isolated and was wrong.
Any thoughts on the situation? Appreciate any help in advance and have loved reading the advise in other posts.
Thanks,
Ben
Trying to diagnose a problem that has come up on my new to me toy. Boat is as described in signature, about 500 hrs on original equipment. About a week ago I had a spun hub on a 14.25 x 23 SS prop, pain in the butt but no big deal as I had a spare aluminum of same size in the boat. Since this has happened everything seems fine with one exception. At WOT, after on plane, something will begin slipping, RPM's will rise to over 5,000, and the boat will slow. Once the slip starts I have to return all the way to idle and re-accelerate to get a good "grip" again. None of this was happening prior to the spun hub on the old prop. I checked my shift linkage on the starboard shift linkage today and the plunger switch was not dead center in the V of the linkage when in forward, it was centered in reverse and neutral. Adjusted the remote linkage today out of the water but haven't had a chance to recheck it. What I'm thinking is that the issue has something to do with one of the following:
1. linkage out of adjustment, drive slipping at high rpm - should know if that was the case next saturday when we hit the lake again.
2. trim set too high - I'm leaning against this because the slip starts with throttle adjustment, not with trim adjustment. I can leave trim in a good cruise setting, adjust throttle to max while on plane, and I'll slip.
3. whale tail on outdrive. I put one of those stingray stealth tails on the drive in an attempt to lower plane speed right before all this happened. Could it be causing my prop to ventilate at high speed on plane operation?
4. something else?? - this is the one that really scares me, I can deal with the above but its tough to risk stranding your family on the lake because I thought I had the problem isolated and was wrong.
Any thoughts on the situation? Appreciate any help in advance and have loved reading the advise in other posts.
Thanks,
Ben