Damn site keeps logging me out. attempt # 3 after I lost a massive post!!

Figured I would revive this thread as I have the next Gen Baja and starting to Dial in now!

454 mags (385hp) prior and now 450rs egg beaters!
68-69 to 78.7mph so far.

34" set back with Bobs jackplate. Have 3 left of lift.
Currently running 22.5" Rev4 xps and 11-12% slip from 50mph+ @ 12% and 10-11% at WOT
Getting a lil stern lift and have to use tabs as I trim out at speed and take just a lil negative 280 tab to settle and lock down.
Hitting Rev limit in cool weather now and can barely get past 75, so 75-76 at most if im lucky.

Coming back from Fun run last month, 6ppl, light fuel, ran 77mph and usually run 75-76 easily with any load.

Spoke to Brett and ordered a set of 26p B1s to test and raise drives a little. Brett thought I was good at 4.5"- 5", I need to confirm this!
He talked me out of 5 blades and want me to test the B1 both IN and OUT along with drive height dial in best slip/rpms/speed and then figure out what labbing needed.

All crap is in bilge on rack built, fridge removed, 4 agm batteries under bench still.

Considering moving Batteries to stern as well.






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More pics of bilge and new helm.

The bilge rack is removable so that I can still have access without unscrewing anything. Anchors are in each side gunnel in bilge.

I like what you did there. Not sure anyone will be alble to help with that set up .

Well, that makes a few of us!! LOL.

I figure its close and have read through all of the posts, just need to account for the additional setback and drive height, but its a lot easier that I have jackplates, I can adjust as needed on the first test!

still a few questions and consensus needed:

1. IN vs OUT: speed gains vs handling at speed, I know the docking has less thrust unless you raise the drives. But mine are back more...?
2. Moving more weight to the back? I can still move the batteries, and I would gain the storage under the bench again. so 2 positives there, just dont know the gains of added weight to the back.
I'll reassess once I test the B1s.
3. Height and labbing. Based on rule of thumb, I can go up 1" or 2" from the box guys as they should be around 24" of setback between box and gimble. Im probably at 34.5 to 35" or so with the lean of the jackplate as I raise.

But other than that, figured it would be interesting.

I played with an old cig set up for a long time.
The only way I could figure out what was best is to try every set up till you find what the boat likes.
Mine took about 12 years .
Turns out it liked 6`s on boxes, even with running surface, 18* rake and a 5 blade.

Turning in will lift the transom ...turning out more bow lift ... looks like in your pics it`s carrying the bow pretty good.

The pic is a lil not normal running attitude, I may have been bouncing a lil, I have some video that shows the water crushing closer to the front bolsters.

I did try to check my drive height and im currently at 4-4.5” below the hull and also my set back is actually 48” from transom to front of drives.

was only measuring the bracket and 4” jack plates, but the outboard mount actually adds some length. my bad lol

I am also getting some chine walk as I running over 65mph. Especially over 72ish, when I start trimming out, it gets loose and rocks until I add a touch of tabs.
So the B1s should let the stern settle and lift the bow. Never had this issue no matter how much I trimmed over 65 before with the stern drive and same style props, but now I running faster and higher X.

I would put 380 k plane bottom plates on it, switch the lowers to turn in
and I would probably go with 5 blades, and jack them up higher, but that’s just me

I actually discussed putting 5 blades on and Brett said it wouldn't make much difference b/c I'm not over 90mph.

I been on the lookout for the 380 plates, but they don't come up for sale very often, I was assuming that we can just swap the bottom plates, b/c I do eventually want to do this although I don't use tabs very often.

Aside from Docking issues... what benefits would I gain from spinning IN?

I tried IN with my stern drives, but I didn't have hydraulic steering and it rode much higher although it did have more bow lift, but it was a little unstable.
I think the speed was similar, but I was also high 60s at the time and I had forgotten that I tried that before I fixed my gimbals and removed the slack!

I have to change my impellers anyway this season, so I planned on testing anyway.

UPDATE>>>>. 26p B1s came in and are on the boat!!!

SO apparently Im doing some prop testing tomorrow.

I guess I will start raising jack plate till it stops gaining speed?

STAY TUNED…. Oh hows the weather up north…. Lol… just kidding!

When I ran them out, the props were more prone to break free right after it rolled over getting on plane, it also seem to have rapid, slight hop at the trim position I would run it at turning in

It did have a bit more of a slippery feeling when running in but
once I figured out the the boat likes the tabs at 5( which was a tick negative)
the boat takes a set and is stable, and is a mile per hour faster.

Something else you may want to test, since you have that huge storage area in the back is to throw some sand tubes on that shelf you built, that would determine if moving batteries and such will help

We’re in Ft Wayne Indiana this weekend for a youth Hockey tournament and it’s been very tropical

Thats a good idea about the weight test… .I didnt think of that. They have a guy who put 400s w/ bobs 10” standoff plates and is running 78, it may be a good test after I try to props.

Cool 65 now w/ 6mph wind and high of 75 today. Humidity is low as well. Feels good! I spent a lot of time in Indianapolis since June, wrapping up just as it’s getting cold!