Motor, props, and cavitation

[Jaysen]

Not really. If I go lower the motor stays in the water. I’m thinking that this mean I need “longer throw” in the bracket.

I could drill some holes in the plate and get another 2” out of it. That’s probably the best plan.

[cape man]

Sounds like a plan...

[fallguy1000]

Something seems amiss or it could be the photography.


So, here is a picture of the locking pin on another ob. When you shift to reverse, a hook grabs the pin and stops it from lurchin. The pin here is in the 2nd hole from the transom or what would be..

Here is the side view of your engine. I don't see a locking pin for the shifter to grab when you go in reverse.

???

[fallguy1000]

If the engine is already tilted too far away from a locking pin, then it can't. What you might try is actually going to the fourth position on the bracket to see if you clget a grab.

But you can test all this without running. The engine, in reverse, should grab the locking pin and not bounce.

First, try to see if you understand the mechanism. It looks like your engine is dangling too far to lock..but photo is blurry and I am having a hard time seeing.

Pull the motor leg toward the boat and see if it'll lock before you do the other adjustments.

[fallguy1000]

Here is a view of the mechanism. I am lifting it up with my finger. It must be down when you are in reverse. It looks like your engine is hanging too far away from the pin..

The pin os the rusty, dark thing .

[fallguy1000]

If your engine is hanging wrong; it won't lock.

It looks like it is back out outboard too far at the prop.

Moving these might fix it.

[Jaysen]

I’m on phone so not as handy at editing pics...

If you look mid shaft you’ll see two black components. On is on a silver rod that is parallel to the shaft. The rod moves when the motor is in gear. When I’m reverse the shaft moves up and the block on the shaft pushed the block on “not on the shaft”. This block pivots a capture mechanism that locks the transom. I have verified that this IS ENGAGING and the motor won’t tilt. But there is play in the lock which is causing the prop to move a bit.

If I adjust those bolts on the lifting bracket it will tilt the motor “up”. I didn’t get. Good pic of the motor Dow , but it hangs straight.

I think cape man has pointed at the right idea to enable the solution others suggested... lower the prop. The problem with that is that no matter how I do it I wind up with the motor never getting clear of the water in the up position. Hmmmm.

In better news, very light winds today. Repeated the test. Boat reversed perfectly and we super easy to co trip with the rudder with minimal throttle. I think she is just high profile wind monster. Hoping to get a good “light wind” day to run through the handling games next week or so.

Thanks all.

[TomW1]

Yep agree you with cape man you need to lower the prop. I would look around for a different motor lowering system. Yours is obviously not working for you. Look for one that has more lift and and lowering range. That is a beautiful boat you have. I have been on a lot of sail boats that have not had problems with there backup motors. So I know there is a solution to your problem. There is no need to have your prop dragging, with the right lift system.

Tom

[cracked_ribs]

Definitely get that motor deeper!

I liked a kicker to be buried deep. You only ever seen to need them when things are going wrong, which always coincides with rough weather. Fully lowered, the cavitation plate on my glass tank is probably a foot under water, if not a little more. If it's rough enough, you can still bark it once in a while.

I would look for a mount with more throw, and mount it lower as well.

[fallguy1000]

Can't you tilt her forward when not in use?