1989 Force 50 HP on 14ft Aluminum V-hull

[httysctty]

The current prop I am using is a little beat up. I do not need hole shot, I just want the fastest top end speed possible for this motor and boat. Can anyone point me in the right direction? The motor is a 507Y9B.

Thanks in Advance,
Scott

 

[steelespike]

Re: 1989 Force 50 HP on 14ft Aluminum V-hull

If you read the stickies at the top of the page and tell us your present prop size,max rpm and speed,we may be able to help you with your setup and prop size.
Also will help to read the helps on the prop store page.

 

[Frank Acampora]

Re: 1989 Force 50 HP on 14ft Aluminum V-hull

If that is the solid hub (rubber hub) prop, splined shaft with thrust pin drive under the tailcone, (as opposed to thru-hub exhaust) I believe the highest pitch you can get (without getting exotic) is 10 3/8 diam. X 13 pitch. On your light tin boat that 50 will definitely turn it and can probably swing a 14 pitch if you can find one. Some of the old Chrysler props were bronze and there are still two blade 10 1/2 X 14 around if you look hard. If you can find bronze or stainless relatively inexpensively, that is the way to go. Michigan aluminum props are well made but the stock Columbian aluminum props have ridiculously thick blades.

I would definitely NOT buy new. There are a lot of these props on the auctions and on junker engines. Buy a used one for testing purposes.

 

[Home Cookin']

Re: 1989 Force 50 HP on 14ft Aluminum V-hull

also consider getting your current prop reworked.
that is a good looking restoration you have there. A 50 on that hull seems to be above the recommended size? Be careful!

 

[httysctty]

Re: 1989 Force 50 HP on 14ft Aluminum V-hull

I spoke with the customer service @ Merc and the guy said I would want a 15 pitch on the 50. I do not have a tach, yet. I think I may purchase one right now... Thanks for all your help, guys!