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-   -   Speed Loss by Rotating Props Out? (https://www.offshoreonly.com/forums/fountain/134250-speed-loss-rotating-props-out.html)

Rebel_Heart 07-02-2006 11:41 PM

Speed Loss by Rotating Props Out?
 
My 35 is terrible to back and handle around the dock, bars, etc. I have my props spinning in, and have heard that rotating out would be a lot easier. I just want to know what others have found in their Fountains. Thanks.

rouxsterre 07-03-2006 12:42 AM

Re: Speed Loss by Rotating Props Out?
 

Originally Posted by Rebel_Heart
My 35 is terrible to back and handle around the dock, bars, etc. I have my props spinning in, and have heard that rotating out would be a lot easier. I just want to know what others have found in their Fountains. Thanks.

I'm driving a single-step 32'er, and changed the rotation to "out". Whatever speed loss there may be is barely noticeable, maybe 1-2 MPH ? . . . I have noticed a significant increase in stability at WFO in flat water ( it could develop a quick and nasty chine-walk, very unexpectadly ), and the close-quarters handling also improved some. Nothing dramatic, however, in terms of handling around the docks. Just be very aware of which prop you're turning, and crab-walking into tight spots is a breeze. Your props should be used as "thrusters", like on a spaceship.

convincor253 07-03-2006 06:45 AM

Re: Speed Loss by Rotating Props Out?
 
Ditto to rouxsterre's comment. With one set of props, I actually ran faster with them turning out. I am still learning how to back the boat into a tight slip but, now at least I have a chance with them rotating out. I also have a single step 32' Fever. Going forward the boat handles great turning out or in.
It may be a little different if you are running close to 90 but mine runs in the low 80's and it is easy to drive.

JMPH 07-03-2006 07:48 AM

Re: Speed Loss by Rotating Props Out?
 
My 35 TS turn out , My old 32 turned in, SS , found the 35 more bankable around dock's although the 32 wasn"t bad. They told me at fountain in 00 the 35's turned out , but I don"t see to many turning out.Later in year I will try turning in.

Rebel_Heart 07-04-2006 01:07 AM

Re: Speed Loss by Rotating Props Out?
 
I'll try some back to back tests with my Hydro Quad 4s 29" pitch. They really don't back very good now. I had heard of a couple miles per hour speed loss with props turning out.

rouxsterre 07-04-2006 03:02 PM

Re: Speed Loss by Rotating Props Out?
 
The only problem I've had with spinning em out, is getting on plane in reverse. I'm thinkin I need more stern lift. . . .

. . . 'cause of the step and all . . .

US1 Fountain 07-04-2006 05:49 PM

Re: Speed Loss by Rotating Props Out?
 
No noticable speed loss when I changed over to spinning out. Spining in and the boat felt real loose at WOT. Docking is 10x better out than in.

Rcolter 07-05-2006 04:01 AM

Re: Speed Loss by Rotating Props Out?
 
What all does it entale to switch them to turn out?

TOMMY HIWAVE 07-05-2006 08:05 AM

Re: Speed Loss by Rotating Props Out?
 
switch them run shifter in rev. or switch lines

US1 Fountain 07-05-2006 03:47 PM

Re: Speed Loss by Rotating Props Out?
 

Originally Posted by Rcolter
What all does it entale to switch them to turn out?

Swap props, flip the cable throw at the shifters.

Peice of cake.

TeamTaboo 07-05-2006 04:14 PM

Re: Speed Loss by Rotating Props Out?
 
Most boats will run faster with the props turning outboard but will not handle as will. When docking remember to speed up the engine that is in reverse, that prop is less efficient.

Rcolter 07-05-2006 06:24 PM

Re: Speed Loss by Rotating Props Out?
 
so switch the throws, moving the cable from top to bottom, vice versa and switch props is all that I need to do.

this will give me some speed gains, top or bottom?

RaggedEdge 07-05-2006 07:54 PM

Re: Speed Loss by Rotating Props Out?
 

Originally Posted by TeamTaboo
Most boats will run faster with the props turning outboard but will not handle as will. When docking remember to speed up the engine that is in reverse, that prop is less efficient.

You sure on this? Talked to Fountain today about my toe in / out question, which lead to the question of in / out board rotation, their statement was that "in" was faster but some of the test drivers like the handling of "out" rotation better. Standard rule has always been that outboard rotation acts better around the dock, from there it depends on the hull itself.

TeamTaboo 07-05-2006 08:44 PM

Re: Speed Loss by Rotating Props Out?
 
On our race boat with staggered set up the boat likes inboard for handling, and rotates at the dock very well. Maybe side by side works different

US1 Fountain 07-05-2006 08:48 PM

Re: Speed Loss by Rotating Props Out?
 

Originally Posted by Rcolter
so switch the throws, moving the cable from top to bottom, vice versa and switch props is all that I need to do.

this will give me some speed gains, top or bottom?


Yep.

Suppose to be more top end with them spinning in, 1-2 mph??, but I seen no lose when I changed to spinning out.

BajaRunner 07-07-2006 10:41 AM

Re: Speed Loss by Rotating Props Out?
 
I tried this on my 36 outlaw. 1 mph faster turning in, but around the docks its a pig. not worth the 1mph for the low speed handling.

Rebel_Heart 07-07-2006 11:13 PM

Re: Speed Loss by Rotating Props Out?
 
Do most Fountains come with an in roation? For those that have changed to an out rotation, is there any negative other than a minimal loss?

US1 Fountain 07-09-2006 05:56 PM

Re: Speed Loss by Rotating Props Out?
 

Originally Posted by Rebel_Heart
For those that have changed to an out rotation, is there any negative other than a minimal loss?



None that can speak of.
Mine feels way more stable while running now. Once you go out, you won't go back in.


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