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-   -   Prop Choice Right or Left Hand? help (https://www.offshoreonly.com/forums/general-q/34626-prop-choice-right-left-hand-help.html)

Fast Forward 10-10-2002 08:34 PM

Prop Choice Right or Left Hand? help
 
Just wondering what the pro’s and con’s of going from a right hand rotation prop to a left hand rotation on a single engine application with a bravo 1 drive. I’ve got 400hr on the drive and just seems that by switching rotation I may have gear problems sooner than I should expect?? Any thoughts??? I only ask due to I have found a good deal on a prop but its left hand. Don’t want the good deal to cost me big down the road.

paradigm shift 10-10-2002 09:02 PM

Not sure but most people with singles like to run right hand if they can as a left hand rotation loads the top of drive. Tries to push the top out. Many improvments in top caps have eliminated most of these problems. I have run both RH an LH on my boat. My particular setup does not run well with RH props. Prop rotation can greatly effect the handling of a boat when changed. Maybe some other powerquest owners will have some expierance and share. I personally would be more concerned with how my boat handled than hurting the drive. But that is just me. :)
What kind of power are you running?

Fast Forward 10-10-2002 09:06 PM

454 mag. Do you have twins or single setup in your boat?

paradigm shift 10-10-2002 09:18 PM

29' Profile Deep Vee. 97 model with straight vee no step. Single 502MPI mag. Original set up. When I put a 540 1071 blower motor in I treid to run RH props but the boat tried to roll on it's side and really handled like sh!%. Went back to LH prop. Some of the single engine Fountains like the 27' run LH to. Just depends on the boat.

ragtop409 10-10-2002 09:25 PM


Originally posted by paradigm shift
I treid to run RH props but the boat tried to roll on it's side and really handled like sh!%. Went back to LH prop. Some of the single engine Fountains like the 27' run LH to. Just depends on the boat.
With the R/H prop was it the starbird/right/driver side of the boat that lifed up and the other side was low? Did speed or trim level it out? My budys 97 27 fountain is a lefty and it fly'es real strait and level.

paradigm shift 10-10-2002 09:46 PM

You could level the boat with trim tabs but you had to run so much tab it did not handle well. LH is straight and level. My drive is a little deep and with a 4 blade and the bigger power the prop still tries to handle the boat a little. 3 blade the boat handles better or is more forgiving but I usually run the 4 blade, much less cavitation and low speed running is no comparison. No steps or pad so it will not have the speed of that fountain but it cuts the water like a knife even when it flies it lands very softly. I learned that boating is a compromise when it comes to speed and comfort at least in the price and size range of boat I can afford to run at this time. :D

ragtop409 10-10-2002 10:37 PM

The reson I ask is my 23' Wellcraft Nova rides low on the pasanger side at 1/2 throtle and middle of the road on trim. even when it is just me in the boat. The tabs wont even level it out all the way. I never thought about trying a lefty on it. Any one have a 23-24 pitch 3 blade lefty I could rent? charlie

BAJA WILL 10-11-2002 08:10 AM

I agree with everything said, I my 27 2001 Fountain has a RH XZ drive from Fountain it is the only one I know of like this. At crusing speed it does list to the left, but top end is level. Its not bad though, usually I am the only one who notices. My old boat was a 1998 Fountain 27 with LH it was level.

Will;)

INDY27 10-12-2002 07:19 AM

I have a 96 27' Fountain with a stage II Procharger and my boat runs better with a rh prop, lh props chine more and are no faster than rh! In the past 18 mos I have tested at least a dozen props and currently run a labbed Bravo 1 32 at 5200 rpm that I got from Throttle-Up a few months ago.

paradigm shift 10-12-2002 09:11 AM

I have never had any chine walk issues with my boat. Although in my case I really did not try but maybe 3 different RH props before giving up and going back to LH. Maybe I just can't go fast enough. ;) Props are like a black art to me. I just don't know enough to understand I think. I have ran two identical props as for manufacture and size and gotten different results. :confused: Maybe not so much in speed but how the boat handled. I think you just have to find (trial & test & test & test) till you find what works the best. Then if you want to squeeze a little more out of it work with getting that prop labbed and then hope you never hit anything and ding it. I have heard and been told set-up is everything and I honestly believe that to be true.

Indy27 what gear ratio you running. You must be flying. :D


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