Props spinning in VS. out

**PARADOX** · 10-29-2008 08:43 PM

AS I understand it the bravo drives forward and reverse gears are the same. or interchangable. Meaning that it can go FT in "reverse" or in forward.

So if I want to experiment with prop rotation.... (they are spinnng in right now)
can I just switch the props.. put in "reverse" and go ??
I don't feel like messing with the cables yet.
Once I figure out which way is better then I will switch the cables.

**P Offshore** · 10-29-2008 09:36 PM

Yes......
Be careful its tougher than it looks

**fund razor** · 10-29-2008 09:58 PM

Originally Posted by P Offshore

Yes......
Be careful its tougher than it looks

It would freak me out.
I am picturing having to dock like that. Yikes.

**MOBILEMERCMAN** · 10-29-2008 10:52 PM

No dock busting.

**glassdave** · 10-29-2008 10:59 PM

Originally Posted by fund razor

It would freak me out.
I am picturing having to dock like that. Yikes.

not really as bad as you think. I've done it many times just take your time while docking (like you should anyway). I wouldnt do it in a high current high wind area though.

Heck The raceboat is like that permanantly. Ed seems to like to run it that way but he gets to dock it. i get the sticks when its go-time

**h2oMag** · 10-30-2008 02:18 AM

[Ed seems to like to run it that way but he gets to dock it] That's why he is EVIL Ed !!!!!

**PARADOX** · 10-30-2008 12:19 PM

may be I send a note to Reggie.

I got the "fastest "V" bottem"

Going backwards.

**MarylandMark** · 10-30-2008 03:21 PM

Wouldn't Charlie know vs getting dirty?

**Elite Marine** · 10-30-2008 04:14 PM

It does freak you out!!! Like they said make sure its a calm day and there arent a ton of people around, you'll throw it in the wrong direction at least once!

**PARADOX** · 10-30-2008 04:48 PM

Some sound advise guys. I'll let Charlie try it first.. I stay on the docks and call my Ins. Co. increasing my coverage..

But thanks.. I will do a bit experimenting this weekend.

**Edward R. Cozzi** · 10-30-2008 05:49 PM

The funniest thing I ever saw was a guy try to run his TRS drives in reverse to try out how the boat performed with the props turning in. The Borg Warner tranny has about a 2.5:1 reduction in reverse. They got so hot they burned the black paint completely off.

**MOBILEMERCMAN** · 10-30-2008 06:07 PM

Edward many years ago when I worked at a dry stack a customer winterized his boat at his car dealership. Long and the short of it is they reinstalled the TRS drives backwards and ran the boat in reverse and burned up both trannies. So in attempt to save on winterizing he ended up pulling both motors and replaced both transmissions.

**OutlawCowgirl** · 10-30-2008 06:52 PM

I have always heard spin your props in to win. Well, at least that is what I have been told. I believe I have tried a left prop on my single drive and had to run it in reverse to go forward. I noticed no difference in preformance and I hated remembering to do the oppisite, I was just testing the prop so it was only for a while. Not sure if my going on helped any but I thought I would give my .02. In To Win.

**PARADOX** · 10-30-2008 09:18 PM

.02's are always welcomed.

. In a single drive application left spin or right won't make any difference. The torque is the same. In twins.. generally speaking.. spinning in is a bit faster, spinning out give you a ted more stability. Lot depands on the hull and even if the set is staggered or side by side. Mine are side by side.. so I just want to do a little experimenting.

**Tom A.** · 10-31-2008 12:13 PM

Bravo drives don't care which way they spin so you can "reverse" the props without any concern other than the shifters being backwards. As far as spinning in vs. out, my understanding is that spinning them in produces slightly more stern lift and in staggered apps. slightly more thrust.

**PARADOX** · 11-03-2008 01:33 AM

Did a test run today, Spinning out, and going all out with shifters in "reverse".

Strange...
The rooster tail was different, wider and taller, a bit slower. (1 may be 2 MPH)
but seemd to have more stearn lift. I had to trim out more then when the props was spinning in.
Docking,,,, now that was interesting.

**shifter** · 11-05-2008 03:14 AM

Not something you really want to do if you want any life out of your drives. If you flex a piece of metal it will fail in X time in one direction/ it will fatigue(break) much quicker if you bend it both ways.

In the case of some drives the rev set is 1/2 size in reverse.(outboard)

pat W

**MOBILEMERCMAN** · 11-06-2008 12:35 AM

Yes Shifter most drives have an intended rotation. This discussion started talking about Bravos.

**US1Fountain** · 11-06-2008 07:59 PM

Originally Posted by PARADOX

Did a test run today, Spinning out, and going all out with shifters in "reverse".

Strange...
The rooster tail was different, wider and taller, a bit slower. (1 may be 2 MPH)
but seemd to have more stearn lift. I had to trim out more then when the props was spinning in.
Docking,,,, now that was interesting.

I seen zero gains in speed when going from in to out. Boat feels alot more stable now, and docking is 10x better. I spend more time docking than running WOT, so I keep them turning out.

**Griff** · 11-06-2008 10:50 PM

Originally Posted by PARADOX

Did a test run today, Spinning out, and going all out with shifters in "reverse".

Strange...
The rooster tail was different, wider and taller, a bit slower. (1 may be 2 MPH)
but seemd to have more stearn lift. I had to trim out more then when the props was spinning in.
Docking,,,, now that was interesting.

Spinning in creates more bow lift and also the rooster will go toward the center more and almost create one rooster as gets it farther back. Your results sound pretty typical for changing from spinning in to spinning out.

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