max trim angle on 23 bobcat w/150 pro xs

[lfgray]

I feel like the boat is not trimming up high enough to get me on pad in a reasonable amount of time.

I’m told that the max trim angle is 20 degrees.  To find that angle you would put the motor at full down, use a digital angle finder and read the angle from the plate.  then subtract that angle (in my case it is 9 degrees) from the max 20 degrees. This would give me 11.  At this point you raise the motor until your angle finder reads  11 degrees at the plate.. When i look at the trim gauge it reads between 1/4 and 1/2. Ok so i now go to the lake and give wot and start to trim up . I’m at about 5200 rpm on plain.  As i trim all the way the gauge will not go past the 1/4 mark, so i know i am not getting the full 20 degree max trim.  in checking later i find  at 1/4 on the gauge, that is 6 degrees. eventually i can get to 5600-5800 rpms where the boat packs the air and gets on pad.

I am told that the new mercury’s at 2500 rpm’s electronically limits the trim angle. Is this why i can only get to 6 degrees instead of 11 which would give me the max of 20 degrees?  or should it get to the max of 20 degrees then be limited to go any higher at 2500 rpm’s.

I am trying to determine if i have a faulty trim sensor . I can’t remember for sure but i think the boat would trim up pass the 1/4 mark in the past.

..

[Wheelman]

I have the 150hp 4-stroke non Pro XS, but believe it operates the same other my rev limit is lower at 5800rpm. It has a single cylinder trim/tilt though there is a limiter at what angle you can get to and mine is just under 1/2 on the gauge. For my Sabre FTD to get on final pad I need to be at atleast 1/4 on the gauge, so I think yours is set too low. Mine has the same low rpm limit if the trim angle is above a certain degree as that would be off the tabs of a normal dual cylinder set up, where it transitions to a faster acting tilt. Ours is one speed the whole time as it’s a single cylinder, which I’ve come to like actually as it’s more responsive.

[lfgray]

Good to hear from you again wheelman.

Having trouble  understanding what is being said.  I am still playing around with the prop to pad thing, got it pretty close. Is this what you are referring to when you say” i think yours is set to low”?If so i recently moved the ptp to 3 3/4 from 3 1/2. it was doing the same thing at 3 1/2.

I can get up on pad at 1/4 on the gauge and 5400 rpm. just seens it should be quicker, and i should be able to get more trim before it is limited by the rpm’s. I worry about being able to get up at all if two people are in the boat. Know that at 5600 rpm i’m at 54 mph so the prop slip seens ok. the prop is a 22p power tech same as a fury.

Mybe i’m totally misunderstanding, and  you are talking about the trim sensor being to low. If so i was not aware that it  could be adjusted, at least i don’t know how to do it.   Always welcome any idea’s.

[Wheelman]

So you could trim above 1/4 on the gauge above 2500rpm previously? Maybe trim sensor is going bad as adjusting the trim limit is only done by the dealer I believe, so if you haven’t taken it in then it shouldn’t have changed.

[lfgray]

If i remember correctly  the trim gauge would show trim above the 1/4 mark. about half way to 1/2 i believe.  I think the sensor should be covered by warranty i’ll check first thing.  thanks for your reply’s

[Author]

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