Is spinning props in faster???
 

Who has run in and out, and has some real numbers for comparison??? I am running a straight bottom, side by side vee........

Only one way to find out. I would put my money on faster with less handling/ control. More rpms because of the blades sharing more H20 from the transom..

i know docking is harder, but say running in 2-3's, will the handling be any different???

Gives more transom lift and less control...

Faster in but can't park worth the crap...

Running a Tiger with #6's and one with Bravo XR's before that, back then.

Yes!

My boat was originally in. Docking sucked, backing up sucked even more. Boat felt loose and squirly when running full tilt.

I changed them to out. Docking is now a breeze, 100% more solid/stable when running, zero loss of speed.

I'd easily gave up 5 mph for the better control if that was the downside, but I didn't. Besides, do you spend more time running WOT or docking?

Depends on the boat;

first off, turning in creates bow lift, not stern lift. On my tiger it gave me a couple mph throughout the whole power band. the boat still docks fine, I noticed that at cruising speeds, I'm going the same speeds at less rpms, which to me shows the boat being more efficient. I have a 42 tiger and needed the bow to be carried more and went from 74 to 76.8. I just switched the props for a weekend to give it an honest test and loved it, actually the first time it hopped right up on plane convinced me, but i gave it another day to try all situations.

I think it depends on the boat. I switched my Formula 302 in and picked up about 200 RPM's and I actually liked the way the boat rode better with them in. I also did not have to trim it up as much to carry the bow. Never had a speedo hooked up to know the MPH increase. Docking was slightly more difficult but I think that was just that I did not have the time to get used to the different way things work.

yeah turning in is def. more bow lift, i know that is a fact. But, does more bow lift mean more total lift??? I have read somewhere that turning props in is like lifting the x dimension??????? Also have heard that bigger diameter props create stern lift, but if spinning the props in, do they create more bow lift????

Mine's a little over 1 mph faster turning in.

Prop blowout when coming on to plane
was much worse when turning out.

As far as the docking issues when turning in,
I've found that leaving the drives trimmed
slightly positive helps.....it's still not as good as when turning out, but it's better than if they're trimmed all the way in.

I think spinning in is more effective on boats with drives very close together and stepped hulls. On my Sonic 31SS with the drives 35" apart on center and stock 496HO's, I saw absolutely no top speed difference whatsoever. I didn't experience any docking problems, either. But, the only way to know is to try. This is easy with Bravos. Just swap your props and run the sticks in reverse to go forward.

Has anybody actually seen a decrease in speed spinning in????

This was the response I got from Gar so I am switching mine back to spinning out this spring.

Bill, yes...all the 33 & 28 twin engine I/0's and O/B's run best with the props rotating outboard. Every boat size & model PowerPlay, even the 25's, were delivered this way. You name the combination of power, propeller types & brands, payloads, ocean & calm water conditions, climate, racing, pleasure, etc., and it was tested & proven for years at PP. How the boat running? Gar

My boat came from pp as a 2 man race boat with staggered #4s on boxes...now it is a side by side set up, with a full cabin, and a pleasure cockpit...so nothing is constant except the 4's and the boxes but they are now side by side

I was wondering about this with #3 SSM's. I am going to try spinning in this spring. The big pain in the butt is you have to acutally change the drives. It is an 86 Cafe, anybody else with something similar?

You could swap lowers but I think swapping the drive is easier cause you don't have to mess with the oil and all that....

You really need to talk to PP guys that have done this. I've talked to a few about other things and chinewalk or poor handling might come into play! Is your boat the B boat in your avatar? do you have any of the original race parts? I might like to pick them up if you do...

yeah same boat as in my avatar. everything that could be used when it was changed to pleasure was used, but other than that I dont have any spare parts from when it was the B boat.....