My view of the 2400 brx

[Philster]

How far can you trim your Opti out???

How far out/up can you guys trim?

I am at about 3.5-3.7" under (centerline of prop under keel 300XS on 10" setback) and I can trim out to where the pic shows (see pic below)

The RPM/Speed increase until I trim to this point, then there is nothing to be gained. If I go a hair past this point -- and I mean a hair! -- the Smartcraft system switches by electronic gauge view to an "E" with a flat bar graph and a %.

So, it might say this:

E_2%=|___|___|___|

or this

E_7%===|_|___|___|



Based on what I can infer, this indicates a % of engine power being held back by Smartcraft, and the best I can figure is that it's because of low block pressure? No alarms, warnings, faults, bells, whistles, beeps horns, etc. Nuttin'. Just that E and the %.

When I had two adults and one child in the bow, it was at its worst, so I am inferring that the stern was up higher than ever, and I could not get away with even the slightest extra trim. Margin of error = 0.
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Note the Trim gauge reading. This is my limit in most circumstances. I've gone a touch beyond this, but was punished when I got a little past it with people riding the bow.

 

[jshepherd]

Well tested on monday 25p tempest with 1/4 fuel on hand held gps went 70.3 mph a 24p trophy same fuel on gps went 71.6 mph. the tempest only turned 6000 rpms turned 6250 with the trophy.

Something isn't adding up with your rpm unless you were over trimmed. I got 72.8 out of my 24 trophy plus no ring and 2 plugs out and 2 large plugs and the rpm was 6050-6100. I went for about 10 miles WOT so I had plenty of time to play around.

Is yours the newer trophy plus ?

I use a P box
http://www.performancebox.co.uk/

 

[jshepherd]

How far out/up can you guys trim?

I am at about 3.5-3.7" under (centerline of prop under keel 300XS on 10" setback) and I can trim out to where the pic shows (see pic below)

The RPM/Speed increase until I trim to this point, then there is nothing to be gained. If I go a hair past this point -- and I mean a hair! -- the Smartcraft system switches by electronic gauge view to an "E" with a flat bar graph and a %.

So, it might say this:

E_2%=|___|___|___|

or this

E_7%===|_|___|___|



Based on what I can infer, this indicates a % of engine power being held back by Smartcraft, and the best I can figure is that it's because of low block pressure? No alarms, warnings, faults, bells, whistles, beeps horns, etc. Nuttin'. Just that E and the %.

When I had two adults and one child in the bow, it was at its worst, so I am inferring that the stern was up higher than ever, and I could not get away with even the slightest extra trim. Margin of error = 0.
.
.
.
.
Note the Trim gauge reading. This is my limit in most circumstances. I've gone a touch beyond this, but was punished when I got a little past it with people riding the bow.

Phil,
I would pull the factory shipping bolt that they left in so you get more negative trim and just use your Livorsi to reset min and max trim so it uses the full scale. Mine now will go all the way to the top of the gauge before it gets into tilt. I surely don't need my gauge to read the full range of tilt.

The percentage is just the trim percentage. you can set this to pop up or not if you get into the menu enough.

Say my max trim before tilt is the up line I can run up to about 2 large bars under that. Any more than that just makes a huge rooster tail and speed does not increase

 

[Philster]

When you rooster tail, did you ever notice anything changing on the gauges to indicate % of engine power cut?

Although, I am probably a victim of bow weight. I need to get the hell out and run this thing alone or with my wife in the seat next to me.

 

[jshepherd]

When you rooster tail, did you ever notice anything changing on the gauges to indicate % of engine power cut?

Although, I am probably a victim of bow weight. I need to get the hell out and run this thing alone or with my wife in the seat next to me.

No, that is just the pop up for trim percent. You can duplicate it with the motor not running. Why it says E I have no idea.

I have also been doing 0-30 holeshots trying to find the best combo. i have found that from idle just stabbing it to wot it has a pretty serious bog but if you put it in gear and bring it up a little then stab it it will shoot out of the hole really good. Doing this I got a 6.6 sec 0-30 but stabbing it from idle was around 7.8-8.0

 

[Philster]

Sorry, I am dense today.

 

[High Voltage]

It was a used trophy i borrowed from a friend of mine, not sure of the age of it. Im pretty sure trim was about right went couple of miles trimmed till it started slowing down and backed it down till mph picked back up. It wasnt the smoothest of water but not bad.

 

[jshepherd]

It was a used trophy i borrowed from a friend of mine, not sure of the age of it. Im pretty sure trim was about right went couple of miles trimmed till it started slowing down and backed it down till mph picked back up. It wasnt the smoothest of water but not bad.

It may have been an older trophy. I actually won one on the auction site and I am going to try it this weekend if gets here on time.

Smooth as glass water is not the fastest btw.

 

[jshepherd]

For the record the old style 23 trophy was not very good on this boat. Lost about 5 mph and rpm's were about 6300. It was slightly quicker 0-30 but was not as good for skiing compared the the 24 trophy plus.

John